Fluke PM3370B manual

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II IMPORT ANT In correspondence concerning this instrument please give the model number and serial number as located on the typ e pla te on the rear of the instrument. NOTE: The design of this instrument is subject to continuo us development a nd improvement. Conseq uen tly , this instrument may incorpor ate minor changes in de tail from the inform[...]

III Thank you for purchasing this FLUKE oscilloscope . It has been designed and manufactured to the highest quality standards to g ive you many years of trouble free and accurate measurements. The powerful measuring functions listed be low have been combined with an easy and logical operation to let you use the full power of this instrument each an[...]

IV MAIN FEA TURES There are five models in this family of FLUKE oscilloscopes. Each of these models is a combination of an analog rea l-time oscilloscope and a fully featured digital storage oscilloscope. By pressing a single key , you can switch the instrument from the ana log mode to the digital mo de and back. This allows ea ch of the units to b[...]

V - Peak detection for the capture of glitches as narrow as 5 ns. - Pattern, State and Glitch triggering (2 ns) (2 channel models; 4ns Glitch triggering o nly) - Event delay and pretriggerin g and posttriggering. - TV triggering including HDTV and TV line selection. - Serial interface for printin g and plotting. - Averag ing to reduce signal noise [...]

VI INITIAL INSPECTION Check the contents of the shipment for complete ne ss and note whether any damage has occurred du rin g transport. When th e contents are incompl ete or there is damage, file a claim with the carrier im mediately . Then notify the FLUKE Sales or Service organization to arra nge for the repair or repla cemen t of the instrument[...]

VII INSIDE THIS MANUAL This operating guide contains info rmation on all of the oscilloscope’ s features. It starts with a general introducti on, a summary of main capabilities, initial inspection note and a front and rear view . Operators safety Chapter 1 should be read before unp acking, installing, and operating the instrument. Installation in[...]

VIII CONTENTS CONTENTS Page 1 OPERATORS SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.3 CAUTION AND WARNING STATEMENTS . . . . . [...]

CONTENTS IX 3 GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 FRONT-PANEL LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.2 SWITCHING ON THE INSTRUMENT . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.3 SCREEN CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

XC O N T E N T S 4.6 DIGITAL ACQUISITION AND STORAGE . . . . . . . . . . . . . . . . . . . 4-30 4.7 ADVANCED VERTICAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . 4-31 4.8 ADVANCED HORIZONTAL AND TRIGGER FUNCTIONS . . . . . 4-34 4.9 MEMORY FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39 4.10 CURSORS FUNCTIONS[...]

CONTENTS XI Appendix A ACQUIRE menu structure . . . . . . . . . . . . . . . . . . . . . . A -1 Appendix B CURSORS menu structure . . . . . . . . . . . . . . . . . . . . . B-1 Appendix C DISPLAY menu structured . . . . . . . . . . . . . . . . . . . . C-11 Appendix D MATHEMATICS menu structure . . . . . . . . . . . . . . . . . D-1 Appendix E MEASURE [...]

XII FRONT VIEW REAR VIEW[...]

XIII FRONT P ANEL CONNE CTIONS Probe Adjust Squarewave output si gnal for e.g. probe calibratio n. Amplitude is calibrated. CH1 BNC input socket for vertical channel 1 with pro be indication co ntact. CH2 BNC input socket for vertical channel 2 with pro be indication co ntact. CH3 BNC input socket for vertical channel 1 with pro be indication conta[...]

XIV REAR P ANEL CONN ECTIONS Z-MOD BNC input socket for external intensity-modulation of the CRT trace. RS-232 BUS (EIA-232-D) Input/output socket to connect the oscilloscope to an RS-232 Interface. LINE IN Line input socket. Fuse holder is built in. NC RXD TXD DTR DSR RTS CTS NC NC=NOT CONNECTED 1 6 5 9 ST6065 FUSE[...]

XV OPTIONAL REAR P ANEL CONNECTION S CH1 Y-OUT BNC output socket with a signal derived from the Channel 1 input signal. MAIN TB GA TE BNC output socket with a signal that is "high" when the Main T imebase i s running and "low" fo r the other conditions. DTB GA TE BNC output socket with a signal that is "high" when the [...]

OPERATORS SAFETY 1 - 1 1 OPERA T ORS SAFETY A TTENTION: The instrument is designed fo r indoor use only . Read this page carefully before installa ti on and use of the instrument. 1.1 INTRODUCTION The instrument describe d in this manual is designed to be used by proper-ly- trained personnel only . Adjustment, maintenance and repair of the exposed [...]

1 - 2 OPERATORS SAFETY 1.4 SYMBOLS Read the safety information in the manu al. Earth. Conformité Européenne. Recycling information. 1.5 IMP AIRED SAFETY PROTECTION The use of the instrument in a manner not specified may impair the protection provided by the e quipment. Before u se, inspect the instrument and accessorie s for mechanical dama ge! W[...]

INSTALLATION INSTRUCTIONS 2 - 1 2 INST ALLA TION INSTRUCTIONS Attention: Y ou are strongly advised to read this chapter thoroughly before installing your oscilloscope. 2.1 SAFETY INSTRUCTIONS 2.1.1 Protectiv e earthing Before any connection to the input con ne ctors is made, the instrument shall be connected to a protective earth conductor via th e[...]

2 - 2 INSTALLATION INSTRUCTIONS The mains (line) fuseholder is loca ted on the rear panel in the mains (line ) input socket. When the mains (line) fuse needs rep lacing, proceed as follows: - disconnect the oscilloscope from the mains (line). - remove the cover of the fuseholder b y means of a small screwdriver . - fit a new fuse of the correct rat[...]

INSTALLATION INSTRUCTIONS 2 - 3 2.2 MEMOR Y BACK-UP BA TTERIES 2.2.1 General inf ormation Memory backup is provi ded to store the oscilloscope’ s settings when switched off so that the instrument return s to the same settings when turned on. T wo AA (LR6) Alkaline batteries are used. Note: The batteries are not factory installed an d must be inst[...]

2 - 4 INSTALLATION INSTRUCTIONS 2.4 HANDLE ADJUSTMENT AND OPERA TING POSITIONS OF THE INSTRUMENT By pulling both handl e ends outwards away fr om the instrument, the ha ndle can be rotated to allow the following instr ument positions: - vertical positi on on its rear feet; - horizontal position on its bottom feet; - in three slopin g positi ons on [...]

INSTALLATION INSTRUCTIONS 2 - 5 2.6 RS-232-C SERIAL INTERF ACE Y our oscilloscope is equipped with an RS-232-C i nterface as standard. The interface can be used in a system for serial communication. The protocol used is CPL (Compact Programm ing Language). CPL is a small set of very po werful commands that can be used for full remo te control. Deta[...]

GETTING STARTED 3 - 1 3 GETTING ST ARTED This chapter provides a 1 0-minute tutorial intended for those who are not famil iar with Fluke osci lloscopes. Those who are already familiar can skip this chapter and continue to Chapter 4. 3.1 FRONT-P ANEL LA YOUT This oscilloscope is a combination of an analog oscilloscope and a digital storage oscillosc[...]

3 - 2 GETTING STARTED T ypical operation of your instrument will be: - Switching on the instrument (see Section 3.2) - Initial standard setup (see Section 3.2) - Screen controls (see Section 3.3) - Auto setup (see Section 3.4) - Analog-Digital mod e switching (see Section 3.5) - V ertical setup (see Section 3.6) - T imebase setu p (see Section 3.7)[...]

GETTING STARTED 3 - 3 3.3 SCREEN CONTROLS The screen controls can be adju ste d for optimum trace, text and spot quality by the controls to the left of the screen. The brightness on the screen is adj usted by two controls, one for the trace and one for the text. • T urn the TRACE INTENSITY control clockwise and verify that only the brightness of [...]

3 - 4 GETTING STARTED 3.4 AUT O SETUP The best way to start each measurement is by using the AUT OSET key . This automatically finds and scales all releva nt parameters on all channels. Step 1 Connect the probe as shown in figure 3.3. NOTE: AUTOSET is programmable. Beca use you have set the instrument in the "standard setup" be fore (see [...]

GETTING STARTED 3 - 5 Step 4 T o preven t measuremen t errors, check the pulse resp onse before any measurement. If the pulse shows overshoot or undershoot, you can correct this by using the trimme r in the probe’ s body . Chapter 4 describes how to adjust the pulse resp onse. In most cases, using AUTO SETUP is suff icient for a good initial disp[...]

3 - 6 GETTING STARTED 3.5 MODE SWITCHING BETWEEN ANALOG AND DIGIT AL OPERA TING MODES Y ou can use the yellow ANALOG key to switch from the anal og mode to the digital mode and back at any time. The signal acquisition and displ ay functions of both operating modes are very similar . However , the nature of the signal s you are using may determine w[...]

GETTING STARTED 3 - 7 SIGNAL CRITERIA ANALOG MODE DIGIT AL MODE Y ou need to make adjustments Fastest Slower to the circuitry and watch display display the signal change update update Automatic measureme nts Can’t use Fully implemente d Signal Math Add, Subtract All functions Add, Subtract, Multiply Signal Analysis Not available Full analysis Int[...]

3 - 8 GETTING STARTED Step 3 Press AUTOSET again . Th is time th e scope performs the autoset in digital mode. Step 4 Press the RUN/STOP key and obse rve that the trace is frozen and stays on screen even after removing the pr obe. Step 5 Press the RUN/STOP key to display th e actual input signal agai n. Reconnect the probe to display the Probe Adj [...]

GETTING STARTED 3 - 9 Step 3 Y ou can change the amplitude of the sign al in a 1, 2, 5 sequence by pressing one of the AMPL keys. Note that the bottom of th e scree n shows the AMPL/DIV setting of CH1. Step 4 Press the ON button of CH2 and observe that a second trace is now visible. The position and amplitude o f this chan ne l can be adjusted simi[...]

3 - 10 GETTING STARTED Step 6 Press the ANALOG key to enter the digital mode Step 7 Press the top one (mV) of the AMPL keys, so that the sign al ha s maximum amplitu de. Press AUTO RANGE and see the signal change to a suitable attenuator value. When AUTO RANGE is ac tive, the attenuators automatically adjust when the signal amp litude changes, to k[...]

GETTING STARTED 3 - 11 3.7 TIMEBASE SETUP The next step is the adjustment of th e main timebase controls ( TIME/DIV , X POS ition, and MAGNIFY keys). Step 1 Press the AUTOSET key . Step 2 Use the TIME/DIV keys on the right hand side of the instrume nt to decrease or increase the numbe r of periods of the signal on the screen. Step 3 Select a timeba[...]

3 - 12 GETTING STARTED 3.8 MAGNIFY (EXP AND) Step 1 Y ou can use the MAGNIFY keys to expand the sign al on the screen. The ’MGN’ indication and the corrected time base setting are d isplayed in the text line. In the analog mode, magnification is limited to * 10. The right key will activate the magnificatio n. The left key will turn of f the MAG[...]

GETTING STARTED 3 - 13 3.9 DIRECT TRIGGER SETUP Now you are ready to set your trigger conditions. Y ou will use one of the channel selection keys ( TRIG1, TRIG2, TRIG3, TRIG4 or EXT TRIG ) and the TRIGGER LEVEL control. Step 1 Press the AUTOSET key . The square-wave signal of the Pro be Adjust output is now displayed on chann el 1. T urn channel 2 [...]

3 - 14 GETTING STARTED Step 6 The same TRIG1 key that was used to select the trigger source is also used to select the trig ger slope. Repeatedl y pressing the TRIG1 button changes the triggerin g so tha t it o ccurs on th e leadin g or tr aili ng edge of the input signal. Note that the slope is also displayed in the bottom text line. Step 7 For re[...]

GETTING STARTED 3 - 15 3.10 PRE-TRIGGER VIEW One of the powerful features in the digital mode is the ability to capture and view signal contents prior to the actual tr igger . The amount of pretrigger information can be as long as one full ac quisition/record. The trigger position is adjusted with the TRIGGER POSITION control. Step 1 T urn the TRIG[...]

3 - 16 GETTING STARTED 3.1 1 MORE ADV ANCED FEA TURES All basic functions are accessed by dedicated keys for fast and easy operation. Some of the more advanced fea tures are menu oper ated. Menus are called up by pressing one of the keys identified with blue text on the front panel. After you press one of th ese keys, a menu is displ ayed on the ri[...]

GETTING STARTED 3 - 17 3.12 CURSOR OPERA TION Cursors are used for accurate amp litud e or time measurements of the signal. Step 1 Before you continue, re set the instrument with the ST ANDARD SETUP . T o do this, press the ST A TUS key and TEXT OFF key simultaneously . Now the instrument is set in the default condi tion and operates in analog mode[...]

3 - 18 GETTING STARTED Step 8 The top text li ne now shows the pulse repetition ti me of the signal (e.g., ch1: ∆ T= 500 µ s). Step 9 Press the second blue softkey until ’=’ is highlighted. Now perform a peak-to-peak me asurement and check that the a mplitude of the signal (’ ∆ V’) is 600 mV . NOTE: When you select ’#’, the fifth b[...]

GETTING STARTED 3 - 19 3.13 MORE ADV ANCED TRIGGER FUNCTIONS Most of the trigger functions (so urce , slope, and level) can be controlled with direct access to the functions (see Secti on 3.9). A CRT menu is used for mor e advanced trigger functi ons. Press the menu key TRIGGER . This turns the men u on. An exte nsive set of functions is now displa[...]

3 - 20 GETTING STARTED 3.14 MORE SIGNAL DET AIL WITH THE DELA YED TIMEBASE When you need to study a part o f a sign al in more detail, a second (delayed) timebase is available. This timebase has its own timebase setting s and trigger level adjustment. Additional selections are made in the DELA YED TIMEBASE menu. Step 1 Press the ST A TUS key and TE[...]

GETTING STARTED 3 - 21 Step 2 Press the DTB key . The DELA YED TIME BASE menu is now displayed on screen. T urn the delayed time base on with the first softkey . The upper trace is the main timebase trace. This first trace shows an intensified part. Adjust the TRAC E IN TENSITY with the contro l as nece ssary . The lower trace is the delayed timeba[...]

3 - 22 GETTING STARTED 3.15 TRACE STORAGE In the digital mode you not only have the ability to sto re traces on the screen (using the RUN/ST OP key), but also to store traces in mem ory for later use. Store traces on screen: Step 1 Press AUTOSET . Step 2 Make sure that the scope is in the digital mode. If not, press the ANALOG key to enter the digi[...]

GETTING STARTED 3 - 23 Here is how traces are stored in memory: Step 6 Use the TRACK control to sele ct an empty memory location such as m1, m2, o r m3. Empty locations are marked with a circle in front of the memory locatio n number (e.g., m3). Step 7 Press the second blue softkey (’ save’). Y ou have now saved the acquisition signal into mem [...]

HOW TO USE THE INSTRUMENT 4 - 1 4 HOW TO USE MORE ADV ANCED FUNCTIONS OF THE INSTRUMENT This chapter allows more experienced oscilloscope users to learn more about the advanced features of this instrument and how to use them. For a complete description of each function , re fer to the next chapter in this man ua l: "Function Reference". T[...]

4 - 2 HOW TO USE THE IN STRUMENT PM3390B 200 MHz 2 Channel Oscilloscope The PM3390B has the same capabilities as the PM3394B on the channels 1 and 2. The channels 3 a nd 4 are replaced by a n external trigger cha nnel. This channel can only be used as an additio nal trigger input channel. Signal manipulation as in the full channels 1 and 2 is no t [...]

HOW TO USE THE INSTRUMENT 4 - 3 FRONT P ANEL LA YOUT The controls on the front panel are groupe d by fu nction. In this chapter , a description for each group of controls is given in the following sequen ce: - Display and probe adjustme nt (see section 4.2) - Analog and digital modes (see section 4.3) - V ert ical deflect ion (see section 4.4) - Ho[...]

4 - 4 HOW TO USE THE IN STRUMENT Study the front panel of your oscilloscope and observe what functions the dif f erent controls and push buttons (keys) per form. There are three different styles of p ush buttons, plus the blue softkeys adjacent to th e screen. The push button functions are as follows: Direct function key . These keys provide direct[...]

HOW TO USE THE INSTRUMENT 4 - 5 4.2 DISPLA Y A ND PROBE ADJUSTMENTS T o help you follow the step-by-step descriptions, e ach section begins by recalli ng the standard setting as outlined be low . If you get "lost", you can return to the beginning of each section, because all functions are set to a predefine d state to create a correct sta[...]

4 - 6 HOW TO USE THE IN STRUMENT DISPLA Y LA YOUT The following illustra tion shows the layou t of the display with a m aximum amount of text. Most text is active only when specif ic functions are a ctivated.[...]

HOW TO USE THE INSTRUMENT 4 - 7 MENUS TEXT OFF A menu appears when a key with blue text is pressed. The menu functions can b e selected by pressing th e blue softkeys to the r ight side of the screen. - Press the ANALOG key to select the digital mode. - Press the DISPLA Y key to activ ate the menu. Each menu starts with a menu name, which correspon[...]

4 - 8 HOW TO USE THE IN STRUMENT CAL SIGNAL AND PROBE ADJUSTMENT Each measuring probe has been checked and adjusted b efore delivery . However , to match the probe to your oscillo sco pe, you must perform the following procedure to optimi ze the pulse response of the combination of oscillo scope input and probes. - Connect the probe body to channel[...]

HOW TO USE THE INSTRUMENT 4 - 9 4.3 ANALOG AND DIGIT AL MODES This instrument is a combination of an analog real-time oscilloscope a nd a digital storage oscilloscope, which offers a variety of additional features. The combination of analog and d igital modes in one instrument gives you the adv antages of both mode s. In the ANALOG MODE the signal [...]

4 - 10 HOW TO USE THE I NSTRUMENT SIGNAL CRITERIA ANALOG MODE DIGIT AL MODE Video signals Preferred when When using delayed Delayed sweep sweep to observe is not used. details, Digital mode provides better light output. OTHER CRITERIA Need to see pretrigger Not possible Up to one screen informati on Y ou need to make adjustments Fastest Slower disp[...]

HOW TO USE THE INSTRUMENT 4 - 11 ST ANDAR D SETTING - Simultaneously press the ST A TUS and TEXT OFF keys. - Connect the Probe Adjust signal to channel 1. The Probe Adjust signa l, now supplied to the input, is a square wave with a lower level of 0V and a top level of 600 mV . The oscilloscope al ways operates in analog mode after a recall of the s[...]

4 - 12 HOW TO USE THE I NSTRUMENT TRACE STORAGE RUN/STOP The digital mode of fers a set of powerful featur es. One of the most important advantages is that you can store one or more trace s in memory or on screen. - Press the RUN/STOP key to stop the signal acquisition and freeze the display on the screen. The trace is frozen and stays on the scree[...]

HOW TO USE THE INSTRUMENT 4 - 13 4.4 VERTICAL DEFLECTION The section shown on the left con ta ins al l direct vertical deflection controlls fo r the input channels 1 and 2. Refer to Section 4.1 for the dif ferences between mode l numbers. T o start this section with the settin gs in a predefined st ate, you must recall the standard setting. ST ANDA[...]

4 - 14 HOW TO USE THE I NSTRUMENT VERTICAL COUPLING AC, DC, GND The input coupling after AUTOSET is ac. Si nce the Probe Adjust signal is a pulse type signal with a 50% duty cycle, its mean value is at the signal’s 50% amplitude level. When the input is ac coupled, the mean val ue will be displayed at the ground level of the oscilloscop e. As a r[...]

HOW TO USE THE INSTRUMENT 4 - 15 VERTICAL POSITION Use the POS control to adjust the groun d le vel to any d esired ver ti cal position on the screen. - Use the position control to position the line in the middle of the screen. Observe that th e channel iden tifier ’1-’ shifts with the trace. - Press the AC DC GND key again to obtain ac input c[...]

4 - 16 HOW TO USE THE I NSTRUMENT VERTICAL AMPLITUDE - Press the upper key of the AMPL keys Pressing the upper key increases the am plitude of the displayed waveform. As the amplitude of the di splayed waveform change s, the screen readout of the input sensitivity changes as well. If you adjust the displayed amplitude to 6 divisions, you will notic[...]

HOW TO USE THE INSTRUMENT 4 - 17 VERTICAL AUTO RANGE The AUTO RANGE function results in an amplitude display of 2 to 6 divisions. - Press the AUTO RANGE key . Observe that the amplitude of the signal chang es from 6 division s to 3 division s. In the upper right corn er of the display A TT 1 is displayed. This indicates that the AUTO RANGE functi o[...]

4 - 18 HOW TO USE THE I NSTRUMENT VERTICAL CH1+CH2 - Using two probes, connect the Probe Adjust signal to Ch1 and Ch2. -P r e s s A U T O S E T . - Both Ch1 and Ch2 are now displayed. - Adjust POS and AMPL to get a display as illustrated on the left below . - Press the CH1+CH2 key . In the analog mode, a third trace will appear on the screen. This [...]

HOW TO USE THE INSTRUMENT 4 - 19 VERTICAL INVERT The INVERT functio n in Channel 2 can be used to make it easier to do out-of- phase signal comparisons. The most co mmon use of the INVER T functi on is to obtain the display or make the a cquisition of the voltag e difference between two channels. This is do ne by displaying or capturing the sum of [...]

4 - 20 HOW TO USE THE I NSTRUMENT VERTICAL MENU BANDWIDTH LIMITER The Bandwidth Limiter reduces the b andwidth of the vertical channels to 20 MHz. This is done by activating a filter in the vertical cha nnels. This feature can be used both in analog mode and in di gital mode to suppress high freque ncy noi se. For repetitive si gnals and when in th[...]

HOW TO USE THE INSTRUMENT 4 - 21 VERTICAL MENU 50 Ω The 200 MHz models of fer the selection of an input imped ance of 50 Ω on all input channels. The EXTTRIG input has no 50 Ω possibility . The impedance selection is a subfunction in VERT MENU. The 50 Ω input imped an ce is u sed to obtain a corre ct im pedance to m atch signal sources of t[...]

4 - 22 HOW TO USE THE I NSTRUMENT 4.5 HORIZONT AL DEFLECTION AND TRIGGERING Before starting with the horizontal deflectio n fu nctions, you must set the instrument to a predefined state to create a correct start situation. ST ANDAR D SETTING - Simultaneously press the ST A TUS and TEXT OFF keys. - Connect the Probe Adjust signal to channel 1. The P[...]

HOW TO USE THE INSTRUMENT 4 - 23 TIMEBASE AUTO RANGE The AUTO RANGE function continuously adjusts the timebase to a display of 2 to 6 waveform periods. - Press the AUTO RANGE key . Observe that the timeb ase of the signal display change s to display 2 to 6 signal periods. AUT O TB in the upper right corner of the displa y indicates that the AUTO RA[...]

4 - 24 HOW TO USE THE I NSTRUMENT TIMEBASE MAGNIFY The displayed si gnal can be expanded horizontally so that more signal detail becomes visible . In the analog mode, a * 10 magnification is possible an d the entire sweep len gth can be made visible by turning th e X POS control. - Press th e right MAGNIFY ke y . The text ’MGN’ appe ars in the [...]

HOW TO USE THE INSTRUMENT 4 - 25 TIMEBASE X POS With X POS the displayed signal is shifted horizo ntally across the display . - T urn the X POS control clockwise. Observe that a bar graph ( ) is displayed.The block on the bar grap h shows which part of the digital tra ce is disp layed as expanded. Th is block on the bar graph m oves as you use the [...]

4 - 26 HOW TO USE THE I NSTRUMENT TRIGGER SOURCE - Press the TRIG 2 key in the CH2 se ction of the front panel to select channel 2 as trigger source. The indication in the lower right hand readout area of the screen now displays ’ch2’. Observe that the signal is not tr igg ered. The ARM’D LED is on. - Press the TRIG 1 key in the CH1 se ction [...]

HOW TO USE THE INSTRUMENT 4 - 27 TRIGGER TRIGGER LEVEL After each AUTOSET , the trigger level is always clamped within the signal amplitude rang e to assure stable triggerin g on most signals. The trigger level is adjustable, but it is limited between the minimum (-100%) and the maximum (+100%) am plitude levels of the signal. - T urn the TRIGGER L[...]

4 - 28 HOW TO USE THE I NSTRUMENT TRIGGER TRIGGER POSITION - Press the ANALOG key to select the digital mode. - T urn the TRIGGER POSITION control counterclockwise. One of the outstanding capabilities of a Digital Storage Oscilloscope is the ability to capture and display signal details be fore the trigger moment. When you turn the TRIGGER POSITION[...]

HOW TO USE THE INSTRUMENT 4 - 29 TRIGGER SINGLE SHOT - Make sure the instrument is in the Digital Mode. -P r e s s A U T O S E T . This sets up the scope with the proper ampli tu de a nd timebase settings. - Remove the probe tip from the Probe Adjust output. - T urn the TRIGGER POSITION to mid-screen (counterclockwise). - Press the SINGLE key . Thi[...]

4 - 30 HOW TO USE THE I NSTRUMENT 4.6 DIGIT AL ACQUISITION AND STORAGE This section gives you a short in tr oduction to digital acquisitio n an d storage in order to provide the ba sic knowledge and terms. Th is information i s necessary for you to understand all digital statements in the following sections of th e manual. In the analog mode the in[...]

HOW TO USE THE INSTRUMENT 4 - 31 4.7 ADV ANCED VERTICAL FUNCTIONS All basic functions of the oscilloscope are accessible via direct action front panel keys. More advanced functions are easily accessi ble via the menus behind the menu initialization keys (keys with their functio n nam e in blue text). ST ANDAR D SETTING Before continuing with the ad[...]

4 - 32 HOW TO USE THE I NSTRUMENT ACQUIRE A VERAGE The average function averages the input data over a number of successi ve acquisitions. The average fu nction is used to reduce the influence of random noise in the input signa l. There is no loss of bandwidth when the average function is activated, but th e signal must be repetitive. The number o [...]

HOW TO USE THE INSTRUMENT 4 - 33 ACQUIRE ENVELOPE The ENVELOP E mode records the minimum and the maxi mum of the signal over a number of acquisitions. - Press the ACQU IRE key . - Press the ’ENVELOPE’ softkey to turn it on. The A VERAGE mode and the ENVELOPE modes ar e mutually exclusive. Observe that A VERAGE is automatically switched off. The[...]

4 - 34 HOW TO USE THE I NSTRUMENT 4.8 ADV ANCED HORIZONT AL AND TRIGGER FUNCTIONS All basic timebase and trigger fu nctions of the oscilloscope are accessible via direct action front panel keys. More advanced fu nctions are easily accessible via the menus behind the menu initializa tion keys (keys with the function in blue text). ST ANDAR D SETTING[...]

HOW TO USE THE INSTRUMENT 4 - 35 TRIGGER LEVEL - Press the ’level-pp’ softkey to turn it off. The automatic level detection circu itry is turned off. The trigger level is no longer clamped within the peak-peak range of the signal . Y ou must adjust the proper trigg er level. While you turn the TRIGGER LEVEL control, the actual trigg er le vel i[...]

4 - 36 HOW TO USE THE I NSTRUMENT TRIGGER MODE TRIGGERED - Press the TB MODE key . In the screen, the timebase mode (TB MODE) menu appears. ’auto’ is intensified. With the "auto" mode turned on, the timebase will run free as soon as no triggering signal is detected, in order to provide a base line. The ’Auto’ mode works wel l with[...]

HOW TO USE THE INSTRUMENT 4 - 37 TRIGGER MODE ROLL - Press the ANALOG key to select the digital mode. - Press the TB Mode key to enter the TB mode menu The TB MODE menu is extended with exte nsive timebase modes. The differ ences are as follows: • A Roll mode • Selection of ’Real-time on ly’ • Delay by events • Selec tion of Acquisition[...]

4 - 38 HOW TO USE THE I NSTRUMENT TRIGGER LINE - Connect a sine-wave signal of 4 V/300 Hz to channel 1. - Simultaneously press the ST A TUS and TEXT OFF keys. -P r e s s A U T O S E T . - Select a timebase speed of 1 ms/div . - Press the TRIGGER key . - Press the softkey next to the function ’ch1 line’ to select ’line ’. When ’line’ is [...]

HOW TO USE THE INSTRUMENT 4 - 39 4.9 MEMOR Y FUNCTIONS The next section deals with storing and re calli ng traces in memory for later use. Functions related to trace storage and recall a re easily accessib le via the m enus selection keys labeled ’SA VE" and ’RECALL ’. ST ANDAR D SETTING Before continuing with the me mory functions, you [...]

4 - 40 HOW TO USE THE I NSTRUMENT TRACE STORAGE SA VE - T urn the TRACK control to select the memory location in which to store the trace data. Observe that eight memory locations ’m1 to m8’ (or 50 memory locations when extended memory is instal led ) scroll through the menu. All locations are marked with a circ le before the memory number . - [...]

HOW TO USE THE INSTRUMENT 4 - 41 TRACE STORAGE COPY A trace can be copied from one memory lo cation to another . - Press the ’COPY’ softkey . The ’COPY MEMORY’ is now displayed. The source (’FROM’) and destination (’TO’) memory locations can be selected in this submenu. - T urn the TRACK control to select ’m3’ as source from. - [...]

4 - 42 HOW TO USE THE I NSTRUMENT TRACE STORAGE RECALL If you completed all of the previous steps, thre e memory locations are occupied by trace informa tion. Y ou can display these stored traces at any time and in any combin ation . - Press th e RECALL key . - T urn the TRACK control to select ’m1’. - Press the ’DISPLA Y on off’ softkey to[...]

HOW TO USE THE INSTRUMENT 4 - 43 TRACE STORAGE SA VING MUL TIPLE TRACES Each memory location can store two cha nne ls. - Connect the probe to channel 1. -P r e s s A U T O S E T . - Switch on channel 2. - T urn the channel 2 POS control counterclockwise. The upper trace displays the signal of ch an nel 1, and the lower line re pre sents channel 2. [...]

4 - 44 HOW TO USE THE I NSTRUMENT 4.10 CURSORS FUNCTIONS Cursors are provided to make fast and accurate amplitude and time measurements. Thes e can be done in digital mode as well as in analog mode. The analog mode of the oscilloscope is ofte n used to accurately display complex waveforms, such as in AM, FM, and V ideo. The digital mode will often [...]

HOW TO USE THE INSTRUMENT 4 - 45 CURSORS ON/OFF There are two sets of cursors : amplitude cursors and time cursors. Amplitude cursors are two horizon tal lines, and T ime cursors are two vertical lines. The dashed lines are referr ed to as reference cursors and the dotted lines a re referred to as delta ( ∆ ) cursors. Cursor measurements can be m[...]

4 - 46 HOW TO USE THE I NSTRUMENT CURSORS VOL T - Use the softkeys, to select the amplitude cursors (’=’ intensified). T wo amplitude cursors will appear in the display . The menu permits the channel to be se lected for which the amplitude cursors apply . When channel 1 is the only channel displayed, ’ch1’ is the only selection. - T urn the[...]

HOW TO USE THE INSTRUMENT 4 - 47 CURSORS READOUT - Press th e softkey next to ’READOUT’. The ’CURSOR READOUT’ selection menu fo r horizontal and vertical measuremen ts is now displayed. Y ou can make the following selecti ons from this menu: ∆ T, 1 / ∆ T, ∆ T-ra tio, T-trg and phase for time measurem ents. ∆ V , V1, V2, ∆ V-ratio [...]

4 - 48 HOW TO USE THE I NSTRUMENT CURSORS READOUT ∆ T-RA TIO/PHASE First, the referen ce distan ce between the two cursors is set. This then is set to 100 % (360 ° ) by pressing the ∆ T=100 % (360 ° ) softkey . Changing the distance between the cursors now results in a % ( ° ) rea ding of the reference . - Press the softkey next to ∆ T unt[...]

HOW TO USE THE INSTRUMENT 4 - 49 4.1 1 MEASUREMENT FUNCTIONS When operating in the analog mode, you can use the cur s ors to measure amplitude and time data. When operating in the digital mode, the scope has an extensive set o f fully automated amplitu de and time m easurement functions. Y ou can select two measurements to be performe d simul taneo[...]

4 - 50 HOW TO USE THE I NSTRUMENT MEASURE MEAS1-PKPK - Press the ANALOG key to select the digital mode. - Press th e MEASURE key . The displayed menu gives access to th e two measurements MEAS 1 and MEAS 2. Each measurement can be independently turne d on and off. In this menu, you can select the me asur ement in MEAS 1 and MEAS 2 function. Observe[...]

HOW TO USE THE INSTRUMENT 4 - 51 MEASURE MEAS 2-FREQ - Press the ’RETURN’ softkey to return to the ’MEASURE’ menu. - T urn on MEAS 2. MEAS 2 performs a frequency measurem ent on the same signal. The screen displays this result as : ’ch1 freq= ....kHz’. - Remove the Probe Adjust signal from channel 1 Because of the absence of an input si[...]

4 - 52 HOW TO USE THE I NSTRUMENT MEASURE CURSOR LIMIT With cursor limited measu rements it is possible to perform measurements on a part of the waveform. - Press the softkey next to CURSOR LIMIT& ST A TIST . - Set CURSOR LIMITED t o ’yes’. - T urn the ∆ control to reduce the area between the cursors. Notice that the measu rement result s[...]

HOW TO USE THE INSTRUMENT 4 - 53 MEASURE TOUCH, HOLD & MEASURE ™ The probes delivered with the oscilloscope of fer a unique and innovative way to perform a number of fun ctions directly from a push button mounted on the side of the probe. One of these functions is called ’TOUCH HOLD and MEASURE ™’. The TOUCH HOLD & MEASURE ™ funct[...]

4 - 54 HOW TO USE THE I NSTRUMENT 4.12 PROCESSING FUNCTIONS Most oscilloscopes, including most Digital Storage Oscilloscopes, limi t their capabilities to the disp lay of amplitude (in volts), versus time. In addition to those traditi onal oscilloscope function s, this range offers capabi lities to mathematically chan ge the contents of each memory[...]

HOW TO USE THE INSTRUMENT 4 - 55 MA THEMA TICS FIL TER - Press the ANALOG key to select the digital mode. - Press the MA TH menu key . The MA TH menu is displayed on the scr een. Observe that MA TH 1 is the default. - Press the softkey next to MA TH 1 to enter the MA TH 1 submenu. This menu is used to select one of the fou r mathematic fu nctions: [...]

4 - 56 HOW TO USE THE I NSTRUMENT MA THEMA TICS MUL TIPL Y Y ou can activate a second process MA TH 2. This way , two pro cesses can run at the same time. - Connect the Probe Adjust signal to channel 1 and channel 2 and turn on both channels. - Press the ’MA TH 2’ softkey in the MA TH menu. The menu displays the MA TH 2 functions. MA TH 2 offe [...]

HOW TO USE THE INSTRUMENT 4 - 57 4.13 DISPLA Y FUNCTIONS When operating in th e analog mode, you can set the scope to display XY displa ys by selecting ’X DEFLECTION’ mode. In this mode the horizontal defl ection is obtained from one of the input signals, while the analog timebase gener ator is turned off. In the digital mode the ’DISPLA Y’[...]

4 - 58 HOW TO USE THE I NSTRUMENT The signal on channe l 1 is a square wave. Consequentl y , there will be only two vertical levels to display . The signal on channel 2 is a sine wave, which is now displayed as a function of the square wave on channel 1. - Press the X SOURCE softkey so that ’line’ is intensified. - T urn off channel 1. Horizont[...]

HOW TO USE THE INSTRUMENT 4 - 59 DIGIT AL D ISPLA Y X versus Y Similar to the anal og mode, the digi tal mode allows you to displa y one trace as a function of another . The source for vertical directio n (Y) is selected by the TRACK control. It can be the acquired trace or a saved tr ack in a me mory location (e.g., m3). For horizontal direction ([...]

4 - 60 HOW TO USE THE I NSTRUMENT DIGIT AL D ISPLA Y VERT MAGNIFY In the digital mode, the displaye d signal can be expanded verti c ally after it has been captured. This allows you to look to signal details. Please note that the magnified repr esentation of th e sign al has the same resoluti on as the originally acquired signa l. - Press the ANALO[...]

HOW TO USE THE INSTRUMENT 4 - 61 DIGIT AL D ISPLA Y INTERPOLA TION Interpolation is a mathematical way to calcu late displayed dots betwe en actually captured signal samples. In te rpolated displays help in the re cogn ition of trace waveforms, even when the num ber of samples is too low to render an accurate representati on of the signal. Use the [...]

4 - 62 HOW TO USE THE I NSTRUMENT DIGIT AL D ISPLA Y WINDOWS - Connect the Probe Adjust signal to channels 1 and 2. -P r e s s A U T O S E T . The screen displays the tw o Probe Adjust signals in th e center of the screen. - Press the TEXT OFF key , to turn off the bottom text. - Switch on the ch annels 3 and 4, when present. The screen displays tw[...]

HOW TO USE THE INSTRUMENT 4 - 63 4.14 DELA YED TIMEBASE The Delayed T imebase (DEL ’DTB) has two basic functions: • T o ma gn ify and display any detail of the signal displa yed with the main timebase. • T o p ermi t more accurate timing measuremen ts. ST ANDAR D SETTING T o start from a predefined state, you must recall the standard front se[...]

4 - 64 HOW TO USE THE I NSTRUMENT DELA YED TIMEBASE DELA Y Use the DELA Y control to select the start of intensified part of the signal in the upper trace. The intensi fied part acts like a window over the Main T imebase tr ace. DELA YED TIMEBASE TIMEBASE - Press either key of the Del’dTB TIME/DIV keys. When you press the left key , the intensifi[...]

HOW TO USE THE INSTRUMENT 4 - 65 DELA YED TIMEBASE TRACE SEP The traces displayed by the Mai n T imebase and Delayed T imebase can be separated with TRACE SEP . If the DELA YED TIMEBASE menu is activated, you will see the symbol next to the TRACE SEP text. The indicates that the TRACK control can be used to adjust the trace separation. - T urn the [...]

4 - 66 HOW TO USE THE I NSTRUMENT The third softkey in the menu i s labeled ’ starts/trig’d’ . ’Starts’ is highlighted as default. This is an indication that th e Delayed T imebase star ts immediately after the delay time has passed. For most signals, the ’ starts’ mode can be used. - Press the softkey to selec t the TRIG’D mode. Wh[...]

HOW TO USE THE INSTRUMENT 4 - 67 DELA YED TIMEBASE TRIGGER LEVEL Just as is the case for Main T imebase triggering, proper triggering of the Delayed T imebase depends on th e sele ction of the proper tr igg er level. The ∆ symbol in the De layed Ti mebase trigger menu indicates the ∆ control to be used to adjust the trigger level. If the coupli[...]

4 - 68 HOW TO USE THE I NSTRUMENT 4.15 HARD COPY F ACILITIES The oscilloscope offers the capabilities to make a hard copy of the screen information on a pri nter or a plotter . The hard copy can include the recorded waveform(s), the relevan t scop e settings, trace identification, cursors, measurement results an d scree n graticule. Before you are [...]

HOW TO USE THE INSTRUMENT 4 - 69 UTILITY PRINT SETUP The oscilloscope must first be set to the correct interface parameters. Y our instrument is a lways equipped wi th an RS 232 interface as stand ard. The following procedure describes how to set up the oscilloscope to use a printer through the RS 232 interface. - Press the ANALOG key to select the[...]

4 - 70 HOW TO USE THE I NSTRUMENT The preceding sectio n describes the se tup of a printer using the RS 232 inter face. If you wish to use an IEEE-488 equipped printer , all steps are the same, except for the RS 232 s etup. UTILITY PLOT SETUP For a hard copy with a pl otter , please refer to the previous se ction on how to set up the oscilloscope t[...]

HOW TO USE THE INSTRUMENT 4 - 71 4.16 AUTOSET AND SETUP UTILITIES This oscilloscope has a number of utilities that assist you to quickly get to the setup you need. One utility is the SET ST ANDARD utility to set the oscilloscope to a factory- defined, known state. The most frequently used utility will be AUTOSET . AUTOSET is user programmable as ou[...]

4 - 72 HOW TO USE THE I NSTRUMENT AUTOSET USER PROGRAMMABLE The AUTOSET fun ction can also be progra mmed so that certain functions swi tch to a predefined position after an AUT OSET . USERPROG allows the user to customize the AUTOSET function for specific applications. Example: T o program the AUT OSET function for dc coupling of the inpu ts, do t[...]

HOW TO USE THE INSTRUMENT 4 - 73 This setup can be saved in memory as fo llows: - T urn the TRACK control until memory location ’s7’ is selected. - Press the soft key ’ save’. The actual setting of the front is now stored in memory locati on ’s7’ . The indication in front of memory location number ’ s7’ changes from an open ci rcle [...]

4 - 74 HOW TO USE THE I NSTRUMENT SETUP TEXT LABEL In the setup menu each stored setups can be given a la bel of user defined text. This is done in the sub men u TEXT of the SETUP me nu. The curs or control s are used for editing text. The TRACK control is used as "cursor", The ∆ control is used for selecting the character . SETUP RECAL[...]

HOW TO USE THE INSTRUMENT 4 - 75 OTHER FEA TURES Y ou are now an experienced user of this Fluke oscilloscope. The following features were no t cove red by this step-by-step introduction: - T rigger and ground level in dicators - TV and HDTV trigger modes and line selectio n - T rigger fil ters - State pattern and glitch trigg eri ng (Glitch only in[...]

FUNCTION REFERENCE 5 - 1 5 FUNCTION REFERENCE This chapter contains an a lph abetized d escri ption of ea ch oscil loscop e function. For easy reference, the functions are or gan ized in the following order: 1. The Function description Explanation and detailed info rma tion about the function. 2. Key sequence T ells the operator which keys/controls[...]

5 - 2 FUNCTION REFERENCE ACQUISITION LENGTH Description: The oscilloscope allows the user to select the acquisition length, or record length that best suits the needs of the application. The default acquisitio n len gth is 512 data points for each trace. It is possible to increase the length of a trace from 512 points up to a maximum 8 K points (or[...]

FUNCTION REFERENCE 5 - 3 MEMOR Y EXP ANSION With the Extended M emory Option installed, the acquisition memory can be made as long as 32K. When shorter acquisitions are selected, more traces can be stored in memor y with a m aximum of 208 ( 156) traces. * ) memory plus acquisition; 2 ch. models between bra ckets Key sequence: Acquisition Reference [...]

5 - 4 FUNCTION REFERENCE ADD INVERT SUBTRACT Description: The CH1 + CH2 (CH3 + CH4) key in the control section for CH1 (CH3) can be used to display additional traces of the sums of these channels. CH3 + CH4 is only present in the 4 channels model s. The invert key (INV) in the control section for CH2 (CH 4) can be used for signal inversion. A diffe[...]

FUNCTION REFERENCE 5 - 5 ADD (MA THEMA TICS) Description: The ADD function performs a point-to-point addition of two traces, related to the two ground leve ls (indicated as ‘-’). The re sult of the ADD function i s a ne w trace in a diffe ren t register . This trace can be scaled and positioned. Scaling is the correction of the resultant trace [...]

5 - 6 FUNCTION REFERENCE Key sequence: Remote commands: CPL: QW (Command to query a waveform). Refer to Chapter 6 for full d etails Control to select the ADD process. Control to select the first source trace. Control to select the second source trace. T oggle softkey to switch the ADD function on. Control to adjust the scale factor . Control to adj[...]

FUNCTION REFERENCE 5 - 7 AL T/C HOP Description: In the analog mode, when two or more chan nels are selected, the oscilloscope displays multiple ch annels in a ‘time sha red’ mode. This implies that a fa st electronic switch connects ea ch input signal to the output ampli fi er in turn. This can be done at the end of every sweep, or at a high f[...]

5 - 8 FUNCTION REFERENCE The alternate and chopped mod es are shown in the figures be low . Key sequence: T oggle softkey to select AL T ernate or CHOPped mode. ANALOG MODE Description: Y ou can use the yellow ANALOG key to switch from the anal og mode to the digital mode and back at any time. The signal acquisition and displ ay functions of both o[...]

FUNCTION REFERENCE 5 - 9 If switching from one mode to another results in an unsa tisfa ctory display , press the yellow key a second time to return to the original situation. Key sequence: T oggle key to switch between analog mo de a nd digital mode. AUTO RANGE Description: The AUTO RANGE function automatically selects the input sensiti vity of th[...]

5 - 10 FUNCTION R EFERENCE AUTOSET Description: The AUTOSET function sets the oscilloscope so that an optimum display of the input signals is obtaine d within the same mode analog or digital. Oper ating the AUTOSET key results in: - Channels with an input signal are switched on ; othe rs are switched of f. - Input coupling is set to ac; becau s e o[...]

FUNCTION REFERENCE 5 - 11 AUTOSET SEQUENCE Description: If front panel settings are stored in memory locations ‘s 1 to s5’ and ‘s6’ is cleared , then the range of ‘s1 to s5’ becomes a sequ ence of front panel settings. Such a sequence can be used as (part of) a step-by-step testing procedure . The two following methods can be used to qu[...]

5 - 12 FUNCTION REFERENCE AUTOSET USERPROG Description: A number of instrument settings after AUT OSET can be customized to your special needs when the standard defa ult settings do not fit on your application. The selections are reached via the ke y seque nce ’UTILITY >> AUTOSET >> userprog’. This gives access to VER T , TRIG and P[...]

FUNCTION REFERENCE 5 - 13 Key sequence: Remote commands: CPL: AS (Command for an Auto Setup) Refer to Chapter 6 for full d etails. T oggle softkey to a ctivate userprog T oggle softkey to p reset channels on/off and input attenuator afte r AUTOSET . T oggle softkey to p reset input coupling after AUTOSET T oggle softkey to p reset reaction of bandw[...]

5 - 14 FUNCTION REFERENCE A VERAGE Description: V alid in digital mode only . Averag ing is a process to reduce random no ise witho ut losing bandwidth. Averag ing can only be used for repetitive signals. Every sample point is calculated after every subsequent acqu isition as follows: In this formula "previous" is the result of the averag[...]

FUNCTION REFERENCE 5 - 15 BANDWIDTH LIMITER Description: The bandwidth limiter cuts the band width of all vertical channels to 20 MHz and makes noisy input signals look smoothe r . The bandwidth limiter does not af fect triggering. The following figure shows th e effect of th e bandwidth limiter . Key sequence: T oggle softkey to switch the vertica[...]

5 - 16 FUNCTION REFERENCE CALIBRA TION AUTOCAL Description: The CAL key is used to make a fine adjustment of the oscilloscope’ s input, trigger , and timebase circuitry to achiev e hig h accuracy even under extreme environmental conditions such as very hi gh or very low temperatures. In a workshop or laboratory enviro nment, a fine adjustment onc[...]

FUNCTION REFERENCE 5 - 17 CHANNEL/TRACE SELECTION Description: In this family of instrumen ts, the distinction is made be tween ‘channel’ and ‘tra ce’. A channel is referred to as an input chan nel , complete with AMPL and POS settings. A trace represents a waveform which has been sto red in one of the register memories. Once such a wavefor[...]

5 - 18 FUNCTION REFERENCE Key sequence: CONFIDENCE CHECK Description: After turning the oscilloscope on, a con fi dence check starts automatically . The following is tested in sequence: - The instrument’ s internal control bus. - The communication be tw een front panel and internal microproce ssor . - The settings in the memory (with backu p batt[...]

FUNCTION REFERENCE 5 - 19 CURSORS Description: Cursors are on-screen measur ing lines. They can be moved using the TRACK and ∆ controls. Cursors can be positioned on sign al details of interest and can be used for accurate measurements. Basically there are two types of cursors: vertical lines (||) cal led time cu rsors and horizontal lines (=) ca[...]

5 - 20 FUNCTION REFERENCE CURSORS TIME The time cursors are used for time measurements. The example sho ws the required softkey settings for period measurements. The cursor positioning with the TRACK and ∆ controls is also shown. CURSORS VOLT The volt cursors are used for voltage measurements. When more than one chan nel is on, the desired channe[...]

FUNCTION REFERENCE 5 - 21 CURSORS BOTH In this mode, both voltage and time cursors are active. The TRACK and ∆ controls operate as in VOL T or TIME mode, as selected with the CONTROL key . Key sequence: Control to shift both cur sors simultaneously , or to shift the track cursor only . Selection in the CURSORS READOUT menu determines one of the t[...]

5 - 22 FUNCTION REFERENCE CURSORS READOUT Description: The cursors of fer a wide variety of vo ltage and time readouts. For compari son of signal details the ratio mode is very suitable . When in analog mode time or volt cursors have been selecte d, only the relevant readouts are disp laye d in the READOUT menu. In digital mode all readouts are dis[...]

FUNCTION REFERENCE 5 - 23 CURSORS READOUT VOLT Three readouts can be sele cted : - ∆ V : Gives the voltage dif ference between the cursors. - V1 V2: Gives the absolute voltage with respec t to ground for each cursor . V1 and V2 have to be selected separately . - ∆ V-ratio: The readout is a percentage that can be reset using th e ’ ∆ =100 %?[...]

5 - 24 FUNCTION REFERENCE DELA Y Description: Delay is the term that is used to define the time dif ference between the trigge r point of an acquisition and th e starting point of the resulting tr ace. In an analog oscilloscope, the trigg er point is at the beginnin g of a trace, and the dela y is said to be zero. The use of a Delayed T imebase int[...]

FUNCTION REFERENCE 5 - 25 Every time the signal crosses th is level the event co unter is increme nted by one. When the event counte r reaches the selected delay value, the scope triggers an d a new signal acquisition is started . The number of events to be cou nted before the acquisition st arts is selected by us ing the ∆ control in the EVENT D[...]

5 - 26 FUNCTION REFERENCE DELA Y MEASUREMENT Description: In the digital mode, the MEASURE menu provides a ‘dela y’ measu rement. This is an automatic measureme nt of the time between two 50% levels ( "mesials") of the first leading or trailing edge of two signal s. The menu is reached with the key sequence ‘MEASURE > > MEAS1([...]

FUNCTION REFERENCE 5 - 27 Key sequence: Remote commands: CPL: QM (Command to query a measureme nt) Refer to Chapter 6 for full d etails. DELA YED TIMEBASE (DEL ’D TB) Description: The Delayed T imeba se (DEL ’ D TB) is used to examine a signal d etail of interest. The detail to be exami ned is indicated as an intensified part of the MAIN TB tra[...]

5 - 28 FUNCTION REFERENCE In the DELA YED TIMEBASE menu, which is selected with the DTB key , the delayed timebase can be switched on. This is don e with the first softkey called ‘DEL ’D TB on/off’. Once activated, the delayed timebase trace is displa yed. The main timebase trace can be swi tched off usin g the ‘MAIN TB on/of f’ softkey .[...]

FUNCTION REFERENCE 5 - 29 DIGIT AL MODE Description: The yellow ANALOG key is used to switch from the analog mode to the digital mode and back at any time. The signal acquisition and displ ay functions of both operating modes are very similar . However , the nature of the signal used or the choice of the measuremen t may determine when it is best t[...]

5 - 30 FUNCTION REFERENCE DISPLA Y MENU Description: The DISPLA Y menu of fers a set of powerful display functions for the analog mod e and the digital mode. In the analog mode, the scope can be set to the X DEFLECTION mode. In this mode XY displays can be generated from a combination of any of the input channels for X and Y , while the analog time[...]

FUNCTION REFERENCE 5 - 31 Horizontal source selection is made with softkeys. X and Y sources must always be traces from the same register memory . This is done to avoid errors because the traces have to be sampled simultaneously to give a useful and correct X vs Y display . The TEXT submenu allows you to display ‘user text’ as additiona l infor[...]

5 - 32 FUNCTION REFERENCE DISPLAY dots linear sine ST6755 9303 DISPLAY X vs Y TRACK on off X SOURCE ST6785 9303 DISPLAY TEXT TRIG IND on off USERTEXT ST6786 9303 GND IND on off T oggle softkey to display trigger level indica tion. T oggle softkey to display or blank ground level indicators. Access to editing menu for USERTEXT (refer to the USER TEX[...]

FUNCTION REFERENCE 5 - 33 ENVELOPE Description: If a waveform is changin g over time (because of dr ift, jitter , or intermittent faults), the ‘history’ of th e changing waveform ca n be collected using the en velope mode. In the envelope mode the min imum and maximum signal values are sto red, taking the values of a large number of successive [...]

5 - 34 FUNCTION REFERENCE EXTERNAL TRIGGER (2 CHANNELS MODELS ONL Y ) Description: The External T rigger inp ut provides an extra input that can be used as the trigger source for th e Main T ime Base (M TB). The External T rigger input chargacteristics are simular to those of th e input channels 1 and 2. The input has probe ran ge indication detect[...]

FUNCTION REFERENCE 5 - 35 FIL TER Description: The FIL TER function is a waveform MA TH function. It is a post- acqui sition algorithm which can be us ed to simulate the effect of a low-pass filter process on a trace. The cu t-off freque ncy of the low-pass filter can be adjusted and the r esult trace is stored as a new trace in a separate register[...]

5 - 36 FUNCTION REFERENCE Key sequence: Remote commands: CPL: QW (Command to query a waveform) Refer to Chapter 6 for full d etails. GLITCH TRIGGER Glitch triggering examines a single channe l, on one or more time conditions. Any one of the channel inputs can be used as trigger source and is sele cted with the keys ‘TRIG1, TRIG2’ or E XT TRIG. [...]

FUNCTION REFERENCE 5 - 37 Key sequence: HOLD OFF Description: The HOLD OFF control determin es the hold of f time. In the analog mode, the hold of f time is an additional ‘dead’ ti me after each timebase sweep during which th e MAIN TB trigger is inhibited. V ariable HOLD OFF enables the user to synchronize the display rate to the sig nal being[...]

5 - 38 FUNCTION REFERENCE Using HOLD OFF to suppress double trigg ering. Key sequence: Control to adjust MAIN TB hold of f time. SIGNAL SWEEP TRIG HOLD OFF (no triggers accepted) TRIG HOLD OFF (no triggers accepted) TRIG HOLD OFF (no triggers accepted) 2 1 2 1 2 1 1 WAVEFORM ON SCREEN 1 2 1 2 1 2 SWEEP SIGNAL TRIG TRIG TRIG HOLD OFF HOLD OFF HOLD O[...]

FUNCTION REFERENCE 5 - 39 INPUT A TTENUA TOR MANUAL + AUTOMA TIC Description: The oscilloscope’s input has a wide range of sensitivities. This enables signals of differ ent amplitudes to be displayed on the a vaila ble screen area. Sensitivity adjustment is done w ith key pair AMPL/V AR or a single AMPL togg le key (for the External T rigger in p[...]

5 - 40 FUNCTION REFERENCE T oggle key to switch the AUTO RANGE function on/off T oggle key to switch between two vertical input sensitivities of the External T rigger inp ut chan nel. INPUT COUPLING Description: The characteristics of the oscill oscope’s inputs can be sele cted for each channel. A channel can be switched o n/of f with the toggle [...]

FUNCTION REFERENCE 5 - 41 Key sequence: T oggle key to switch a channel on/off. T oggle key to switch the display of the Externa l T rigger signal on/of f. T oggle key for vertical input coupling of the input channels. T oggle key for vertical input coupling of the External T rigger i nput. INPUT IMPEDANCE (200 MHZ MODELS ONL Y) Description: For hi[...]

5 - 42 FUNCTION REFERENCE LOGIC TRIGGER (4 CHANNELS MODELS ONL Y) Description: Logic triggering ena ble s triggering on a combinat ion of the four input signals. Each input is compared with a trigg er level and is recognized as being either HIGHer or LOWer than the trigger level. The four inpu t sig nals together can be regarded to be a 4-bit dig i[...]

FUNCTION REFERENCE 5 - 43 The time cond ition can be set in the softkey men u. enter triggers when the pattern becomes tr ue. exit triggers when the pattern changes from true to false. if>t1 triggers when the pattern is true and its duratio n exceeds a specified time. The TRACK control is used to adjust time limit t1 . if<t2 triggers when the[...]

5 - 44 FUNCTION REFERENCE MAGNIFY HORIZONT AL Description: In the analog mode, the MAGNIFY key pair switche s between the no rmal trace and horizontal expansion of th e trace by a factor of 10. The maximum timebase speed is then increa se d fro m 20 ns/div to 2 ns/ div . In the digital mode, the same MAGNIFY key pair gives horizontal expa nsion of [...]

FUNCTION REFERENCE 5 - 45 Key sequence: Key pair to adjust the horizontal ma gni fication. Analog mode: Right side switches x10 MAGNIFY on. Left side switched x10 MAGNIFY of f. Digital mode: Rig ht side increases the MAGNIFY factor . Left side decreases the MAGNIFY factor . MAGNIFY VERTICAL Description: In the digital mode the displayed signal (s) [...]

5 - 46 FUNCTION REFERENCE MAIN TIMEBASE MANUAL + AUTOMA TIC Description: The Main T imebase (MAIN TB) has a wide range of time/div settings. This enables the display of signals of various freque ncies to be displayed with optimum resolution. The time scale is adjusted with the key pair TIME/DIV (V AR). Adjustment can be done in steps or in a contin[...]

FUNCTION REFERENCE 5 - 47 MA THEMA TICS Description: T wo mathematical functions (MA TH 1 and MA TH 2) are independen t wave form processes. These can be used separ ately , or be chained together if require d. Each offe rs a choice of four mathematical functions (add, subtract, multipl y , filter). The result of each function is always placed in a [...]

5 - 48 FUNCTION REFERENCE The following measureme nts are available: volt: dc, rms, min peak, max peak, pk-pk, low level, high level, overshoot (positive and nega tive), preshoot (p ositive and negative) time: frequency , period, pulse width, rise time, fall time, duty cycle delay: channel to channel on leading or trailing edges Refer to the functi[...]

FUNCTION REFERENCE 5 - 49 3. Calculate all other signal pa ram eters. The formulas for all time and volt measurements are given in the secti ons for DELA Y MEASUREMENT , TIME MEASUREMENT , and VOL T MEASUREMENT . The HISTOGRAM method determines the voltage levels. This method is as follows: - The input data (= trace) is used to create a histogram. [...]

5 - 50 FUNCTION REFERENCE Newly acquired tra ces or previo usly stored traces can be used as source for this process and can be selected with the ∆ control. The r esulting trace is automatically written in a reg ister memory (m1 for math1 or m2 for math2) . T o see the result more clearly , use the ‘DISPLA Y SOURCE on/of f’ softkey to turn of[...]

FUNCTION REFERENCE 5 - 51 PEAK DETECTION Description: This function is available only in the di gital mode. In the acquisition system of a Digital Storage Oscilloscope, the sample distance is determined by the time base speed. At higher time base spe eds, the distance between the samples is short; at lower time base speeds, the sample distance is l[...]

5 - 52 FUNCTION REFERENCE See the function ACQUISITION LENGTH for add itional information Key sequence: T oggle key to switch the peak detection on /off. POSITION Description: Position controls al low the signals to be shifted across the screen to align sig nals with the measuring gra ticule to make time and voltage measure ments. V ertical positio[...]

FUNCTION REFERENCE 5 - 53 POWER SUPPL Y Description: The instrument can be used at a ny nominal line volta ge between 100 V ac and 240 V ac, with no switching an d no fuse changes. After th e instrument is turned o n by pressing the POWER ON/OFF switch, an automatic power -up test is started. For detailed information, re fer to the ’CONFIDENCE CH[...]

5 - 54 FUNCTION REFERENCE Interface The instrument is equi pped w ith an RS-23 2 Interfac e as stand ard. This i nterface can be used with an RS-232 printer or plotter . The IEEE 488.2 Interface is available as factory installable option. This inte rface can be used with IEEE-488 compatible pr inters or plotters. For correct functioning, corre ct i[...]

FUNCTION REFERENCE 5 - 55 Real-time clock The real-time clock is used to make time stamps on a hardcopy . Hardcopies will be stamped with two ti mestamp s: the time of operation of the HARD COPY key and the time of trigger of the acquisiti on. Adjust block Three softkeys are used to adjust the clock. The softkey in the middle determines if the adj [...]

5 - 56 FUNCTION REFERENCE PLOTTER LAYOUT GRID yes no 1:1 2:1 A3 A4 TRACE INFO yes no ST6764 9303 COLORS yes no T oggle softkey to p lot the grid. T oggle softkey to select paper size. T oggle softkey to select plot format. T oggle softkey to plot trace information. T oggle softkey to p lot traces in colors. PRINTER LAYOUT GRID yes no TRACE info yes[...]

FUNCTION REFERENCE 5 - 57 PROBE UTILITIES Description: The ’PROBE SWITCH’ setting of the ’UTILITY >> PROBE’ menu determine s the instrument’s reaction when you press the command button on the probe. Y ou can select between the start of AUTOSET , performing a TOUCH, HOLD & MEASURE™, selecting the next setup or switching between[...]

5 - 58 FUNCTION REFERENCE REMOTE CONTROL IEEE 488.2 Description: An IEEE 488.2 Interface is available as an option. This interface can be used to control oscilloscope functions by an external compute r . All of the oscilloscope’s current settings can be read by the computer . The programming langu age is called SCPI (Standard Commands for Program[...]

FUNCTION REFERENCE 5 - 59 REMOTE CONTROL RS-232 Description: The oscilloscope is equipped with an RS-232 Interface as standard. This can be used for remote control or for se tting the readout using an external controller or PC. The language used is called CPL (Com pact Programming Langu ag e) and is described in Chapter 6. CPL is a small set of ver[...]

5 - 60 FUNCTION REFERENCE Key sequence: Key to switch from remote to local. Remote commands: CPL: PC (Command to program communication par ameters) GL (Has same result as operation of ST A TUS LOCAL key) LL (Inhibits front key ST A TUS LOCAL) Refer to Chapter 6 for full d etails. UTILITY TRACK RS232 SETUP RS232 SETUP NO IEEE BITS 78 PARITY no odd e[...]

FUNCTION REFERENCE 5 - 61 RUN/STOP Description: The RUN/STOP button operates in the digital mode only . When the STOP function is active, a ny new signal acqui siti on is stopped an d the trace is ‘fro zen’ . The status of the STOP functio n is displayed in th e bottom right side of the screen. With the acquisitions STOPped, the following actio[...]

5 - 62 FUNCTION REFERENCE SCREEN CONTROLS AND GRA TIC ULE Description: The screen controls are located to the left of the CR T viewing are a. Brightness of trace(s) and text can be adjuste d separately with the TRACE INTENSITY and TEXT INTENSITY controls. Intensity of the tr ace(s) can also be determined by a voltage applie d to the rear panel sock[...]

FUNCTION REFERENCE 5 - 63 Key sequence: Control for trace intensity . Control for text intensity . Srewdriver operated contro l to align the trace with the graticule Control for focusing of trace, text and cursors. Control for illumination inte nsity of measuring graticule SCREEN MESSAGES Description: User messages show up in the center of th e CR [...]

5 - 64 FUNCTION REFERENCE AUTO SETTING (USERPROGRAM) Indicates that instrument perfo rms an userprogrammed au toset. Function ’AUT OSET USERPROG’. CALIBRA TION COMPLETED Autocalibration is completed . Function ’CALIBRA TION AUTOCAL ’. CALIBRA TION ERROR ... Autocal not successfully completed. Function ’CALIBRA TION AUTOCAL ’. CH. 50 Ω[...]

FUNCTION REFERENCE 5 - 65 NO DTB, ACQ. TOO LONG Del’d TB only possible at acquisition length of 512 sample points. Functions ’ACQUISITION LENGTH’ and ’DEL ’D TB’. NO DTB IN ROL L M ODE Del’d TB and Roll modes cannot be combined. Function ’DEL ’D TB’ and ’TB MODE’. NO ENVELOPE IN ROLL MODE Envelope and Roll modes cann ot be c[...]

5 - 66 FUNCTION REFERENCE REGISTER EMPTY Recalling traces from an empty register is not possible. Protection of an empty register is impossib le. Function ’RECALL ’. REGISTER PROTECTED Register cannot be saved in protected memory location. Function ’SA VE’. REGISTER USED FOR MA TH T race cannot be saved in reg ister M1 or M2, because it is [...]

FUNCTION REFERENCE 5 - 67 save: The actual set of settings is saved in the sele cted memory location. recall: The settings saved in th e sele cted memory location become the actu al settings. undo: The settings pre vious to the last recall action become active agai n. CLEAR & PROTECT : in the CLEAR & PROTECT SETUPS subme nu ’PROTECT on of[...]

5 - 68 FUNCTION REFERENCE SETUPS SEQUENCE Description: If front panel settings are stored in memory locations ‘s 1 to s5’ and ‘s6’ is cleared , then the range of ‘s1 to s5’ is referred to as a sequence . Such a sequence can be used as (part of) a step-by-step testing procedu re. There are two possible ways to step through a sequence wit[...]

FUNCTION REFERENCE 5 - 69 ST ANDAR D SETUP / FRONT P ANEL RESET Description: A factory-programmed set of d efaul t setti ngs is ava ilable to p ut the in stru ment in a defined state. The default settings (std) ar e reached in the menu under the SETUPS menu key . Another method to perform a front panel reset is by pressin g the ST A TUS and TEXT OF[...]

5 - 70 FUNCTION REFERENCE ST A TUS SCREEN Description: Normally a maximum of four li nes of setti ng information are give n in the lower screen area. More extensive setti ng information can also be displayed. The ST A TUS toggle key switches between normal a nd extensive settings informatio n. The status screen gives the following add itiona l sett[...]

FUNCTION REFERENCE 5 - 71 SUBTRACT (MA THEMA TICS) The subtract mode is available in the digital mode of operation. Description: The SUBTRACT function performs a point- to-point subtraction of tw o traces. Each point related to the respective gro und le vels ( indicated as ‘ -’). The r esul t of the SUBTRACT function is a new trace in a differe[...]

5 - 72 FUNCTION REFERENCE Key sequence: Remote commands: CPL: QW (Command to query a waveform) Refer to Chapter 6 for full d etails. TEXT OFF Description: T oggle key to select information in th e CR T viewing are a. This way , more space is available on screen for trace display . There are three steps in the cycle: - Softkey menu tur ned off. - In[...]

FUNCTION REFERENCE 5 - 73 Key sequence: T oggle key to cycle through three states of information given in CR T viewing a rea. TIMEBASE MODES Description: The Main T imebase (MAIN TB) can function in three diff ere nt modes : AUTO, TRIG, or SINGLE. The choice is mainly determ ined by the frequency of the trigger signal. The modes are ex plained belo[...]

5 - 74 FUNCTION REFERENCE MUL TI Part o f MA TH+ option. Refer a lso to MA TH+ Users M anual. The MUL TIple shot mode enables a number of single shot acq uisitions to be made in rapid succession. It is basically the same as SINGLE but with automatic rearming following each acquisition. Each acquired waveform is stored in a different memory location[...]

FUNCTION REFERENCE 5 - 75 TIME MEASUREMENTS Description: T ime measurem ents can be m ade using the cursor s or using autom ated, calculated measurem ent routines. Cursors ope rate in the analog mode as well a s in the digital mode. Calculated time measurements are ava ilable in the digital mode only . Using the cursors , three time in te rval read[...]

5 - 76 FUNCTION REFERENCE - period (PERIOD). Measures the time betwee n the first and third mesial of the signal. At l east one complete signal period must be acquired to get a valid measurem ent. period = time of 3rd mesial - time of 1st mesial - pulse (PULSE WIDTH). Measures the minimum time of the positive part and ne gative part of the fi rst p[...]

FUNCTION REFERENCE 5 - 77 Results of the measurements MEAS1 and MEAS2 are disp layed in the top left corner of the screen. When you press the key sequence MEASURE >> CURSOR LIMIT & ST A TIST >> ST A TIST on, the screen displays three valu es per MEAS function. These values are measured over the total number of acquisitions for that [...]

5 - 78 FUNCTION REFERENCE TOUCH, HOLD & MEASURE ™ MODE Description: The TOUCH, HOLD & MEASURE. ™ mode is a quick way to freeze the tr ace and to display four main measurem ents instantly . This is done by pressing the COMMAND switch on the measuring probe of the requi red channel. The four measurements ar e: dc voltage level, peak-to -p[...]

FUNCTION REFERENCE 5 - 79 TRIGGER COUPLING Description: T rigger coupling is used to optimize the trigger stability for dif ferent signal types. The filter modes ac and dc are identical to those of th e vertical inputs. Refer to function INPUT COUP LING. Lf-reject cuts of f lowe r frequencie s; trigger ing occurs on sig nals between 3 0 kHz and ful[...]

5 - 80 FUNCTION REFERENCE Key Sequence: DTB ac dc lf-rej hf-rej ST6773 9303 TRIGGER noise on off ac dc lf-rej hf-rej ST6772 9303 T oggle softkey to select MAIN TB trigger coup ling modes ac, dc, lf-reject, and hf-reject. T oggle softkey to switch ’noise’ mode for MA IN TB/DEL ’D TB. T oggle softkey to select DEL ’D TB trigger coupling modes[...]

FUNCTION REFERENCE 5 - 81 TRIGGER DEL ’D TB Description: The Delayed T imebase has two operating modes: starts and triggered. In both modes the main timebase must be trigg ere d first, and the delay time must have expired. The Del’d T ime Base modes are selected in the DELA YED TIMEBASE menu after switching the delayed timebase on. In the "[...]

5 - 82 FUNCTION REFERENCE Source and slope are selected wi th the same TRIG 1, TRIG .., and EXT TRIG keys that are used for the main timebase trigger sou rce and slope selection. The delayed timebase source and slope have their own read out. This readou t can be found at the bottom right corner of the screen, below the readout for the main timebase[...]

FUNCTION REFERENCE 5 - 83 Leveling in DEL ’D TB is adjusted with the ∆ control. It is activated in the triggere d DEL ’D TB mode. The range is from -8 ... +8 divisions. T rigger levels for MAIN TB and DEL ’D TB can be displayed. Refer to the description of the UTILITY SCREEN & SOUND function. TRIGGER LEVEL control ranges in level-pp on [...]

5 - 84 FUNCTION REFERENCE TRIGGER MAIN TB Description: This section deals only with ‘edg e’ trig gering of the MAIN TB. For TV triggering, Logic triggering or DEL ’D TB trigge rin g, refer to the appropriate sections. In the analog mode triggering d etermine s the start po int o f th e MAIN TB sweep. The sweep starts at th e moment the sig na[...]

FUNCTION REFERENCE 5 - 85 The MAIN TB trigger settings are selected in the menu unde r the TRIGGER menu key . The toggle softkey ‘ch...lin e’ selects the trigger so urce in combinati on with the keys TRIG1, TRIG.. and EXT TRIG that give direct front panel access to select the trigger sour ce. This is combined wi th the slope se lection. Functio[...]

5 - 86 FUNCTION REFERENCE TV TRIGGER Description: In addition to edge and glitch trigger ing (explained under TRIGGER MAIN TB), there are extensive video tr iggering possibiliti es. These enable stable triggerin g on video frames and lines fr om various TV sta ndards. There is no need to ad just the trigger level. T riggering is possible on video s[...]

FUNCTION REFERENCE 5 - 87 Key sequence: T oggle softkey to switch between edge and tv triggering. In digital mode also glitch triggering. T oggle softkey to switch between TV triggering on field 1, field 2, or line sync pulses. Control to select the line number. T oggle softkey to select between pos(itive) and neg(ative) signal polarity . Softkey p[...]

5 - 88 FUNCTION REFERENCE USERTEXT Description: T wo lines of user-definable text can be displayed in the CR T viewing area. The text may be useful as additional informa tion when taking photogra phs. The selections are reached via the key sequence ’U TILITY >> SCREEN & SOUND >> USERTEXT >> on’. The EDIT USER TEXT menu giv[...]

FUNCTION REFERENCE 5 - 89 UTILITY MAINTENANCE Description: The UTILITY MAINTENANCE menu is used to calibrate the oscilloscope and for repair and testi ng. Cali bration data is protected by a passwo rd and by operation of a pinhole switch that can be seale d. Calib ration is of vital importance for the instrument’ s high a ccuracy . The menu is me[...]

5 - 90 FUNCTION REFERENCE UTIL MENU Description: The UTIL menu is used to make presettings fo r instru ment settings that do not need to be changed frequently: - The operation o f the AUTOSET key . For a description, refer to the AUTOSET and AUTOSET USERPROG functions. - Selections in relation to pro bes. Refer to PROBE UTILITIES function for detai[...]

FUNCTION REFERENCE 5 - 91 UTILITY SCREEN & SOUND Description: The UTILITY SCREEN & SOUND menu is used to select on-screen text, trigger and ground level ind icators, and user text. Settings for acoustic feedback (beep and click) are set in this menu. The menu can be re ached with the key sequence ’UTILITY >> SCREEN & SOUND’. T[...]

5 - 92 FUNCTION REFERENCE VOL T MEASUREMENTS Description: V oltage measurements can be made using the cursors or using automated, calculated measurem ent routines. Cursors ope rate in the analog mode as well a s in the digital mode. Calculated volt measurements ar e available in the digital mode only . Using the cursors, three voltage readou ts can[...]

FUNCTION REFERENCE 5 - 93 - rms (ROOT MEAN SQ UARE VOL T AGE) Measures the rms value withi n one period, related to the ground level of the signal. If no full per iod is present, all input samples are includ ed in the calculation. where: j = 1st mesial crossing [first sample if no full period] k = 3rd mesial crossing [last sample if no full peri od[...]

5 - 94 FUNCTION REFERENCE - oversh (OVERSHOOT) Measures the overshoot (in %), related to the amplitude of the signal. There are two types of overshoot: rising overshoot and falling overshoot (undershoot). - presh (PRESHOOT) Measures the preshoot (in %), related to the ampl itude of the signal. There are two types of preshoot: rising presho ot and f[...]

FUNCTION REFERENCE 5 - 95 Key sequence: Remote commands: CPL: QM (Command to query a measureme nt) Refer to Chapter 6 for full d etails. MEASURE MEAS1(2) TRACK volt time delay ST6780 9312 on off ∆ CURSOR LIMIT& STATIST CURSOR LIMITED yes no STATIST on off T oggle softkey to select time measurements in menu MEAS1 or MEAS2. Control to choose th[...]

5 - 96 FUNCTION REFERENCE X-DEFLECTION (X-DEFL, X vs Y) Description: X-deflection creates X-Y di sp lays in which one input signal is displayed as function of anothe r . T o obtain X- Y disp lays i n the analog mode, the oscilloscope can be set to X-DEFLection mode. In the digital mode a similar function is called X vs Y mode. In both cases a displ[...]

FUNCTION REFERENCE 5 - 97 Key sequence: T oggle softkey to switch X- Deflection on. Softkey pair to select X-DEFL source. Selection is possible only with X- DEFLection on. T oggle softkey to switch X vs Y on. Control to select the register as source for verti cal deflection. Selection is possible only with X vs Y on. Softkey pair to select source f[...]

THE CPL PROTOCOL 6 - 1 6 THE CPL PROTOCOL 6.1 INTRODUCTION The oscilloscope can be controlled via the RS-232 serial interface using the Compact Programm ing Language (CPL) protocol. In this protocol a small but very powerful set of commands is defined. The main characteristics of the CPL protoco l: It is kept simple and straightforward and is fully[...]

6 - 2 THE CPL PROTO COL There are several IMPLICIT QUERY commands, which means that the oscilloscope will send data back (i.e., resp ond ) to the computer after receiving and executing the command. Acknowledge The <acknowledge> is an automatic response from the oscilloscope to let the computer know that the received co mmand has been executed[...]

THE CPL PROTOCOL 6 - 3 6.2 EXAMPLE PROGRAM FRAME In the COMMAND REFERENC E SECTION a very shor t programming exa mple is given for each command. All example s are written in GW-Basic and able to run on an IBM-compatible PC. The example program expects the oscilloscope to be connected via COM1 port (RS-232 ) with a RS-232 null modem cabl e and to be[...]

6 - 4 THE CPL PROTO COL 6.3 COMMANDS IN FUNCTIONAL ORDER group name command Communication Program Commu nication PC Setup Auto Setup AS Default Setu p DS Program Setup PS Program text PT Query Setup QS Query text QT Recall Setup RS Save Setup SS Calibrate CL States Go to Local GL Go to Remote GR Local Lockout LL Measurement Arm T rigger A T Program[...]

THE CPL PROTOCOL 6 - 5 6.4 COMMANDS IN ALPHABETICAL ORDER command name AS Auto Setup A T Arm T rigger CL Calibrate DS Default Setup GL Go to Local GR Go to Remote ID IDentifica tion LL Local Lockout PC Program Communication PS Program Setup PT Program text PW Program W avefrom QS Query Setup QM Query measurement QP Query Print QT Query text QW Quer[...]

6 - 6 THE CPL PROTO COL 6.5 COMMAND REFERENCE In this section all commands of the CPL protocol avai lable in the oscilloscope are described in alphabetical or der . All command descriptions have the same layou t: NAME NM Purpose: Explains the command, its parame ters and limitations. Command: Shows the syntax for the programming com mand. The param[...]

THE CPL PROTOCOL 6 - 7 AUTOSET AS Purpose: T o start the AUTOSET function. With this command the oscill oscope will sel ect the optimum settings (volts, time base, trigger mode, etc.) for the connected signal(s). The AutoSet (AS) command per forms the same function as pressing the fron t panel AUTOSET button. Command: Response: Note: The <ackn o[...]

6 - 8 THE CPL PROTO COL ARM TRIGGER A T Purpose: Will reset the timebase and rearm the triggering for a new timebase trigger . Issuing this command during a ti me base sweep will immediately stop the sweep, reset the timebase and rea rm the triggering. The Arm T rigger (A T) command performs the same function as pr essing the frontpanel SINGLE-ARM?[...]

THE CPL PROTOCOL 6 - 9 CALIBRA TE CL Purpose: T o start the internal Auto-Cal ibration procedure. This procedu re op timizes the input, trigger and ti me base circuitry of the oscilloscope. This cali bration takes approximately one minute and com pletion is sign alled by the ackn owledge. The Calibrate (CL) comman d performs the same function as pr[...]

6 - 10 THE CPL PROTOCOL DEF AUL T SETUP DS Purpose: Sets the oscilloscope to the default setup conditi ons. The Default Setup (DS) command perfo rms the sam e function as pressing the TEXT OFF and ST A TUS/LOCAL buttons simultaneously . The communication inte rface parameters will not be changed. Command: Response: Note: The <acknowledge> is [...]

THE CPL PROTOCOL 6 - 11 GO to LOCAL GL Purpose: Puts the oscilloscope in the Local State. In the Local State, all oscilloscope functions are accessible via the front panel buttons and knobs. The Go to Local (GL) command perform s the same function as pressing the ST A TUS/LOCAL key on the front panel of the oscilloscope, when the oscilloscope is in[...]

6 - 12 THE CPL PROTOCOL GO to REMOTE GR Purpose: Puts the oscilloscope in the Remote State. In the Remote State none of the oscilloscope functions are accessible via the fron t panel buttons and knobs. Going back to the Local State is achieved by sending the Go to Local (GL) command or by pressing the ST A TUS/LOCAL key on the frontpanel (Refer als[...]

THE CPL PROTOCOL 6 - 13 IDENTIFICA TION ID Purpose: Returns the identification of the oscilloscope. It gives information about the model number , the version numbers of all software modules and the installed options. This Identification (ID) co mmand gives the same information as can be read fr om the oscilloscope screen after pressing the frontpan[...]

6 - 14 THE CPL PROTOCOL example response: 1 - manufacturer 2 - model number of the oscilloscope 3 - information about the oscilloscope software 4 - information a bout the micr o-controller software 5 - information about the frontpanel contr ol software 6 - information a bout installed options, e.g.: • IEEE (IEEE interf ace) • EXT (External T ri[...]

THE CPL PROTOCOL 6 - 15 LOCAL LOCKOUT LL Purpose: This instruction will inhibit the Go to Local function of the ST A TUS/LOCAL key on the frontpanel. Once activated , the Local Lockout State is disabled by se nding the Go to Local (GL), the Reset Instrument (RI) command or by cycling power OFF and ON. (Refer also to "Go to Remote" and &qu[...]

6 - 16 THE CPL PROTOCOL PROGRAM COMMUNICA TION PC Purpose: T o program baudrate , parity mode, number of data and stopbits and the handshake method for co mpu ter communica tion . After the command is sent, an <acknowledge> will be returned with the old communication par ameters still ac tive. If the <acknowledge> = 0, the new communica[...]

THE CPL PROTOCOL 6 - 17 Response: Note: approx. 0.5 sec after an <acknowledge> = 0 is received, the communication paramete rs are changed to the new values. Example: 100 PAR$="2400, N,8,1" :’comm parameters 110 CTL$=",XONX OFF" :’XO NXOFF handshake 120 PRINT #1,"P C",PAR$,CTL$ :’Send command 130 GOSUB 1000 [...]

6 - 18 THE CPL PROTOCOL PROGRAM SETUP PS Purpose: T o configure the oscilloscop e using compact setup strings. This Program Setu p (PS) command and th e Query Setup (QS) command can be used together to restore and retrieve a com plete setup or partial of the oscilloscope. The format of the progr amming strings must be the same as the forma t of the[...]

THE CPL PROTOCOL 6 - 19 PROGRAM TEXT PT Purpose: T o program text to an oscilloscop e. If the S parameter is specified, setup text is programmed. The text will be set into one of the setup registers of the oscilloscope. The par ameter n specifies the setup register . A maximum number of 22 characters is allowed. The remain der of the text field is [...]

6 - 20 THE CPL PROTOCOL "S" setup text will be speci fied for r egi ste r n; if "S" and n a re le ft out, user text is specif ied n one of the setup registers, ranging from 0 to 10; n=0 selects the current setup char a character byte; range = 0 to 12, 14 to 255 (refer to character code table 6.1) The following ta ble contains th[...]

THE CPL PROTOCOL 6 - 21 Examples: (of user text) 1) Prog ram the following user text to be displayed o n the screen of the oscilloscope: Measurement 15 100 PRINT #1,"P T" :’Program user Text command 110 GOSUB 1000 :’Sync on ackno wledge 120 PRINT #1,"M easurement 15":’Send user text 130 GOSUB 1000 :’Sync on ackno wledge [...]

6 - 22 THE CPL PROTOCOL PROGRAM W A VEFORM PW Purpose: T o send a wave form to the oscilloscope. This fu nction is referred to as to P rogram a complete W aveform in the oscilloscope. A waveform is sent ( programmed) in two command sequence s. The first sequence selects the waveform regi ster number , programs the waveform administration data, a nd[...]

THE CPL PROTOCOL 6 - 23 wave_nr The oscilloscope waveform destination: 01 1 - 084 for m1.1 - m8.4 01e - 08e for m1.e - m8.e 091 - 504 for m9.1 - m50.4 (Extended Me mory only) 09e - 50e for m9.e - m50.e (Extended Me mory only) (xx.e for 2 ch. models only; xx.3 and xx.4 for 4 ch. models only) admin 16 parameters, separated by a "pds": count[...]

6 - 24 THE CPL PROTOCOL sample 2 bytes (Most Significant Byte + Le ast Significant Byte), representing the 16 bit sample value (b it 16 = -32768, bit 15 = 16384, ..., bit 1 = 1). Range: -32k (down) to +32k (up ) checksum 1 byte checksum of all sample bytes (add one by one; result modu lus 256 ) Example: In this example, a waveform of 512 points is [...]

THE CPL PROTOCOL 6 - 25 Example program: 100 COUNT=512 :’Number of samples 110 PRINT "Generating trac e samples ..." :’Display operator messa ge 120 DIM WAVE(2*COUNT) :’Declare waveform array 130 FOR I=1 TO COUNT :’For all samples 140 SAMPLE = INT(1 9200*SIN(I/40.744)) :’Generate sine value 150 LSB = SAMPLE AND &HFF :’Calc[...]

6 - 26 THE CPL PROTOCOL QUER Y MEASUREMENT QM Purpose: T o obtain measurement data from an oscill oscope. If the V (V alue) parameter is specified, one measured value will be returned. If the L (Logging) parameter is speci fi ed, an infinite number of measured values will be returned. Cancelling is possible by sending the ASCII character ESC . If n[...]

THE CPL PROTOCOL 6 - 27 Response 1: Response 2: n meas_type 1) suffix_unit 1) Note: 1 variable variable measurement 1 2 variable variable measurement 2 10 dV V delta V oltage between cur sors 1 1 V1 V V olt cursor 1 12 V2 V V olt cursor 2 13 Vdc V V olt dc 20 dT s d elta T ime between curs ors 2) 21 F Hz Frequency (1/dT) 30 dX V delta X 3) 40 dP h [...]

6 - 28 THE CPL PROTOCOL meas_type s tring of characters, specifying the type of the measured value, e.g. "Tr" meas_value string of characters, specifying the measure d value in floating point notation, e.g. "98934E-0 9" suffix_un it string of chara cters, specifying the unit of the m easured va lue: "V", "s" [...]

THE CPL PROTOCOL 6 - 29 QUER Y PRINT QP Purpose: T o obtain the graphical data of the display from the oscilloscope. The Query Print (QP) command can be used to retrieve a complete display picture, which can be stored as a HPGL file in the PC. This file can then be used in for example FLUKEVIEW , Word Perfect or Wor d files. Command: Response 1: Re[...]

6 - 30 THE CPL PROTOCOL Example: Written in Quick Basic; CLS CLOSE OPEN “COM2:1920 0,N,8,1, CS0, DS0, CD0” F OR RANDOM AS #1 OPEN “HPGL.HGL” FOR OUTPUT AS #2 : ‘Open outp ut file PRINT #1, “QP”; 1 : ‘Query print Start! = TIMER WHILE ((TIMER < Start! + 1) AND (LOC(1) = 0)) WEND IF LOC(1) > 0 T HEN : ‘Sync on data PRINT “Res[...]

THE CPL PROTOCOL 6 - 31 QUER Y SETUP QS Purpose: T o query the oscilloscope for its current setup. This Query Setup (QS) co mmand and the Program Setup (PS) command can be used together in order to retrieve an d restore a complete or parti ca l setup of the oscilloscope. Optiona lly a pa rameter can be added to the command to que ry a particular pa[...]

6 - 32 THE CPL PROTOCOL Example: (Complete setup query) 90 DIM SETUP$[ 25] :’Reserve space 100 PRINT #1,"Q S" :’Send co mmand 110 GOSUB 1000 :’Sync on acknow ledge 120 INPUT #1,N :’Read number of node strings 130 FOR I=1 TO N 140 INPUT #1,SETUP$[ I] :’Read all node strings 150 PRINT "N= ";I;SETUP$[I] 160 NEXT I example[...]

THE CPL PROTOCOL 6 - 33 QUER Y TEXT QT Purpose: T o query text from an oscillosco pe. If the S parameter is specified, se tup text is return ed. The text will be queried from one of the setup registers of the oscilloscope. The par ameter n specifies the setup register . A text field of 22 characters is returned. If the S parameter is not specified,[...]

6 - 34 THE CPL PROTOCOL Example: (of user text) Read the user text from the screen of an oscilloscope: 90 DIM USERTXT $ (64) 100 PRINT #1,"Q T" :’ Query user Text command 110 GOSUB 1000 :’Sync on acknowle dge 120 LINE INPUT #1,USERTXT$ :’Rea d text characters 130 PRINT USERT XT$ :’Print user text The text on the screen of the osci[...]

THE CPL PROTOCOL 6 - 35 QUERY W A VEFOR M QW Purpose: T o obtain a complete waveform fr om the oscil loscope. Y ou can use the PW command to sen d the data received with the QW que ry back to the oscilloscope. The option ",A" can be used to recall the date and tim e in the customized format. When compatibility wi th initial versions of th[...]

6 - 36 THE CPL PROTOCOL wave_nr The oscilloscope waveform source: 001 - 004 for CH1 - CH4 00e for EXT TRIG 01 1 - 084 for m1.1 - m8.4 01e-08e for m1.e - m8.e 091 - 504 for m9.1 - m50.4 (Extended Memory on ly) 09e - 50e for m9.e - m50.e (Extended Memory on ly) (xx.e for 2 ch. versions only; xx3 and xx4 for 4 ch. versio ns only) admin 16 parameters, [...]

THE CPL PROTOCOL 6 - 37 Example: 100 PRINT #1,"QW";74 :’Query waveform (m7 .4) 110 GOSUB 1000 :’Sync on acknowledge 120 INPUT #1,NM$ :’Trace_name 130 INPUT #1,YUNIT$ :’Y_unit 140 INPUT #1,XUNIT$ :’X_unit 150 INPUT #1,YZERO :’Y_zer o 160 INPUT #1,XZERO :’X_zer o 170 INPUT #1,YRESOL :’Y_resolution 180 INPUT #1,XRESOL :’X_r[...]

6 - 38 THE CPL PROTOCOL Interpretation of waveform data As a response to the QW command the oscilloscope sends a set of data describing the waveform. The following example shows the interpretation of that data. The example assume s the Pr obe A djust sig nal to b e appl ie d to inp ut chann el 1. For information about MA THPLUS, refer to the supple[...]

THE CPL PROTOCOL 6 - 39 Definitions A waveform can be described as a set of two one dimensional ar rays: S [1...N] and T[1...N] . The index n corre sponds with th e numbe r of the samples and is an integer value in the rang e 1...N. The wa veform of a sampl ed sign al descr ibes for a range of samp le moments (T[1]...T[N]; usually expressed in seco[...]

6 - 40 THE CPL PROTOCOL Tim e b a se In case of a sampled signal th e ho rizontal scale is called the time base. The time base setting is usually expressed in seconds/division. With out mag nification or compression the oscilloscope always displays 50 samp les per horizontal division. Note: The horizontal scale as well as the FF T scale can differ [...]

THE CPL PROTOCOL 6 - 41 RESET INSTRUMENT RI Purpose: Resets all of the software of th e oscilloscope, includi ng the CPL protocol han dler and all of the input a nd output buf fers. Oscilloscope settings remain the sa me. Interface para meters are no t changed in order to keep the communication alive . When the Reset has been completed th e oscillo[...]

6 - 42 THE CPL PROTOCOL RECALL SETUP RS Purpose: T o recall an internally stored setup fro m one of 10 setup register s. This setup must have been stored in the oscillosco pe manually or with the Save Setup (SS) command. The command performs the same as the frontpanel key SETUPS to gether with the softkey RECALL. Command: <setup reg> represen[...]

THE CPL PROTOCOL 6 - 43 SA VE SETUP SS Purpose: T o save the current oscilloscope setup in one of 10 internal setup registers. This setup can be recalled manually or by sendi ng the Recall Setup (RS) command. The command performs the same as the frontpanel key SETUPS to ge ther with the softkey SA VE. An execution error will be returned if the setu[...]

6 - 44 THE CPL PROTOCOL ST A TUS ST Purpose: T o obtain a more detailed status report. The re sponse gives more informa tion about the conditions, causing a wrong ackn owledge. The status is returned as on e or more signed decimal integers. Each bit of the equivalent 16-b it binary status word represents a status condi tion. If a bit is set, the co[...]

THE CPL PROTOCOL 6 - 45 Example: 100 PRINT #1,"S T" :’Send command 110 GOSUB 1000 :’Sync on acknow ledge 120 INPUT #1,ST ATUS :’Read Sta tus word 130 IF STATUS < 0 THEN GOTO 120 :’Fetch next sta tus 140 GOSUB 2000 :’Display Status * ) example st atus: 6CR (= 00000000 00000110 in binary) which means: (because bit 2 and bit 1 a[...]

6 - 46 THE CPL PROTOCOL TRIGGER ACQUISITION T A Purpose: T o perform a software trigge r . This command causes an acquisition or sweep to be started . It is the software equivalent of a normal trigger pulse. In the single sh ot mode the A T (Arm Tr igger) command is sent to arm the trigger ing first. Command: Response: Example: 100 PRINT #1,"T[...]

THE CPL PROTOCOL 6 - 47 6.6 ACKNOWLEDGE The <acknowledge> is a synchronization rep ly that is returned after each command sent to the oscilloscope, signalling correct or incorrect operation: "0" Ok, norma l situation "1" Syntax error (ST query may give more info) "2" Execution err or (ST query may give more info)[...]

6 - 48 THE CPL PROTOCOL 6.7 ST A TUS The Status word gives more informati on when the acknowledge is non- zero. A certain bit in the word can b e found by performing a logical AND of the status word with the mask defined below . (Logical AND: the wor ds are compared bi twise and only whe n both bits are 1, the result bit is 1) Example: Status = 38 [...]

THE CPL PROTOCOL 6 - 49 Example program to investigate sta tus: 2000 PRINT "STATUS IS : ";S TATUS 2010 PRINT "MEANING: "; 2020 IF (STATUS AND & H0001 ) > 0 THEN PRIN T "UN KNOWN HEAD ER" 2030 IF (STATUS AND & H0002) > 0 THEN PRINT " WRONG DATA FORMAT" 2040 IF (STATUS AND &H0004 ) > 0 THEN[...]

6 - 50 THE CPL PROTOCOL 6.8 SETUP The Query Setup (QS) and Progr am Setup (PS) commands can be used together in order to retrieve and restore a comp lete o r partical setup of the oscilloscop e. When a setup is requested from the oscil loscope, it will send its setup as a sequence of strings. Each sepa rate string describes a setup node. By adding [...]

THE CPL PROTOCOL 6 - 51 hex dec meaning 13 19 Events T rigger Delay se ttings (event counter low/high, trigge r level low/high, trigger source, event bits, trigger coupling) 14 20 SCPI T rigger Settings (SCPI trigger source low/hig h) 20 32 Cursor settings (V cursors on/off, T cursors on/of f, rise time on/off, control V/T , Vpp on/off, rise time 1[...]

6 - 52 THE CPL PROTOCOL Applications: The setup nodes for dif ferent timeb ase settings can be stored separately . They can be used afte rwa rds as fixed ’templates’ to change only the oscilloscope timebase setup. The layout of each setup node string is: nnllxxxxxx..... ..xx where all characters are in the hexadecima l ran ge (0..9,A..F). Each [...]

ACQUIRE MENU STRUCTURE A - 1 Appendix A ACQUIRE menu structure ACQUIRE ACQUIRE AVERAGE 256 PEAK DET on off ENVELOPE on off TRACK ST6565 9312 T DIGITAL MODE:[...]

B - 1 CURSORS menu structure Appendix B CURSORS menu structure # # CURSORS READOUT CURSORS READOUT CURSORS READOUT CONTROL RETURN RETURN RETURN CURSORS on off - ch2 ch3 ch4 READOUT CURSORS on off READOUT CURSORS - ch2 ch3 ch4 # # CURSORS on off - ch2 ch3 ch4 READOUT CONTROL # CURSORS on off - ch2 ch3 ch4 READOUT CONTROL # ∆ V V1&V2 ∆ V-rati[...]

CURSORS menu structure B - 2 CURSORS READOUT CURSORS READOUT # # CURSORS READOUT CONTROL RETURN RETURN RETURN CURSORS on off - ch2 ch3 ch4 READOUT CURSORS on off READOUT CURSORS ∆ T ∆ T-ratio ph ∆ T=100% ∆ V V1&V2 ∆ V-ratio ∆ V=100% ∆ T ∆ T-ratio ph ∆ T=360 ° ∆ V V1&V2 ∆ V-ratio ∆ V=100% select ∆ cursor trace - ch[...]

DISPLAY MENU STRUCTURE C - 1 Appendix C DISPLA Y menu structured Xv sY TEXT EDIT USER TEXT DISPLAY X-DEFL on off RETURN RETURN RETURN ENTER DISPLAY DISPLAY ST6560 9303 ANALOG MODE: X-DEFL TEXT X-SOURCE ch1 ch2 ch3 ch4 line DISPLAY Xv sY TEXT ANALOG DIGITAL MODE: WINDOWS on off VERT MAGNIFY off dots lineair sine on off REGISTER acq m1 m2 X SOURCE m3[...]

D - 1 MATHEMATICS MENU STRUCTURE Appendix D MA THEMA TICS menu structure RETURN MATH MATH MATH MATH 2 m2= filter acq MATH n MATH SCALE MATH FILTER PARAM TRACK MATH 1 m1= on off SCALE DISPLAY SOURCE yes no MATH 2 on off PARAM DISPLAY SOURCE yes no MATH 1 add sub mul filter ch1 ch2 ENTER 1D I V = 21.3mU TRACK OFFSET 26.8mU auto- scale RETURN WINDOW 3[...]

MEASURE MENU STRUCTURE E - 1 Appendix E MEASURE menu structure[...]

F - 1 DTB (DEL’D TB) menu structure Appendix F DTB (DEL ’D TB) menu structure DELAY TB on off DTB TRACK ∆ DELAYED TIMEBASE MAIN TB on off starts trig’d LEVEL 125mV ac dc lf-rej hf-rej (TB MODE) EVENTS DELAY OFF ON (TRIGGER) TV OFF ON DELAYED TIMEBASE DELAY TB on off MAIN TB on off ST6564 9303 TRACE SEP TRACK TRACE SEP ∆ T T[...]

SAVE/RECALL MENU STRUCTURE G - 1 Appendix G SA VE/RECALL menu structure[...]

H - 1 SETUPS MENU STRUCTURE Appendix H SETUPS menu structure SETUPS FRONT SETUPS std s1 s2 recall undo save CLEAR& PROTECT TRACK CLEAR& PROTECT SETUPS std s1 s2 TRACK PROTECT on off clear clear all RETURN CLEAR SETUPS CONFIRM yes ARE YOU SURE ? no CLEAR SETUPS CONFIRM yes OVERRULE PROTECT? no SETUP TEXT EDIT insert ENTER TEXT space delete U[...]

TB MODE MENU STRUCTURE J - 1 Appendix J TB MODE menu structure TB MODE EVENT DELAY ACQ LENGTH CONFIRM TB MODE RETURN RETURN TB MODE RETURN TB MODE ST6563 9303 TB MODE ANALOG DIGITAL : TRACK ∆ on off auto trig single alt chop ANALOG: auto trig single multi ROLL on off REALTIME ONLY yes no EVENT DELAY ACQ LENGTH ROLL on off STOP ON TRIGGER yes no A[...]

K - 1 TRIGGER menu structure Appendix K TRIGGER menu structure TRIGGER TRIGGER ANALOG DIGITAL MODE: ANALOG MODE: TRIGGER MAIN TB edge tv ch3 line level-pp on off noise on off ac dc lf-rej hf-rej TRIGGER MAIN TB edge tv field 1 field 2 lines pos neg VIDEO SYSTEM hdtv TRIGGER MAIN TB edge tv field 1 field 2 lines LINE NBR 32 TRACK pos neg VIDEO SYSTE[...]

TRIGGER menu structure K - 2 VIDEO SYSTEM ENTER TRIGGER MAIN TB state pattern glitch edge tv logic LHxH enter exit if >t1 if <t2 range t1 = x.xxxms TRACK TRIGGER MAIN TB state pattern glitch edge tv logic LHxH enter exit if >t1 if <t2 range RANGE x.xxxms xx.xxms ∆ TRIGGER MAIN TB TRACK edge tv logic state pattern glitch > t1 <t2[...]

L - 1 UTILITY menu structure Appendix L UTILITY menu structure[...]

UTILITY menu structure L - 2[...]

M - 1 VERTICAL MENU STRUCTURE Appendix M VERTICAL menu structure VERT MENU VERTICAL MENU 50 Ω CH1 on off ST7412 9312 BW LIMIT on off 50 Ω CH2 on off 50 Ω CH3 on off 50 Ω CH4 on off[...]

RS-232 CABLE CONFIGURATIONS N - 1 Appendix N RS-232 Cable confi g urations This appendix suppl ies additional in formation abou t the RS-232 cab le configurations between the oscil loscope and a connected device. The oscilloscope and most of the devices are Data T erminal Equipment (DTE) configurated. Communication lines: TxD = T ransmitted Data Rx[...]

N - 2 RS-232 CABLE CONFIGURATIONS B. Cable to printer/plotter with hardware handshake parameters: "3-wire/7-wire" = 7-wire "XON-XOFF on off" = on or of f C. Cable to controller with hardware handshake parameters: "3-wire/7-wire" = 7-wire "XON-XOFF on off" = on or of f The communication is confir m th e RfR pr[...]

APPENDIX P P - 1 Appendix P CHANNELS SIMUL T ANEOUSL Y SAMPLED A T 100 MS/s The scope has two 8-bit flash a nalog-to-digital conver ters (ADCs), each with a maximum sample rate of 100 MS/s. This allows two channels to be captu red simultaneously in single sh ot mode, with sample rates of up to 100 MS/s for each channel. The horizontal resolution is[...]

P - 2 APPENDIX P CHANNEL ACQUISITIONS For three- or four -channel acqui sition, the ADCs are used in conjunctio n with the chopped mode or alternate mo de. In the chopped mode the first ADC takes a single sam ple on channel 1, the n one on channel 3, then one on channel 1 aga in and so on. The second ADC chops between channels 2 and 4. The chopping[...]

APPENDIX P P - 3 EXP ANSION AND INTERPOLA TION Sometimes there is a nee d to look at a singl e shot or lo w repetition rate sig nal at high timebase speed. Thi s can be done by selecting the ‘real tim e sampling only’ mode in the Main T ime Base menu. In this mode the scope never switches to random sampling. In order to capture a longer time ?[...]

FUNCTION INDEX I - 1 FUNCTION INDEX (see Chapter 5) ACQUISITION LENGTH ADD INVERT SU BTRACT ADD (MA THEMA TICS) AL T/CHOP ANALOG MODE AUTO RANGE AUTOSET AUTOSET RECALL SEQUENCE AUTOSET USERPROG A VERAGE BANDWITH LIMITER CALIBRA TION AUTOCAL CHANNEL TRACE SELECTION CONFIDENCE CHECK CURSORS CURSORS READOUT DELA Y DELA Y MEASUREMENT DEL ’D TB DIGIT [...]

I - 2 FUNCTION INDEX MAGNIFY HORIZONT AL MAGNIFY VERTICAL MAIN TB TIME/DIV MA THEMA TICS MEASURE MENU MUL TIPL Y PEAK DETECTION POSITION POWER SUPPL Y PRINTING AND PLOTTING PROBE UTILITIES REMOTE CONTROL RUN/STOP SCREEN CONTROLS AND GRA TICULE SCREEN MESSAGES SETUPS SETUPS RECALL SEQUENCE ST ANDARD FRONT/FRONT P A NEL RESET ST A TUS SCREEN SUBTRACT[...]

FUNCTION INDEX I - 3 INDEX The overall index conta ins all function names and reference wo rds in alphabetica l order . It refers to the relevant section and page number , mainly of Chapter 5 (Function Reference). In this chap te r more detailed information can be found. Entry Refer to chapter/function Page 50 Ω 5 INPUT IMPEDANCE . . . . . . . . [...]

I - 4 FUNCTION INDEX Entry Refer to chapter/function Page Clock 5 PRINTING AND PLO TTING. . . . . . . . . . . . 5-55 Command switch 5 TOUCH, HOLD & MEASURE ™ MODE . . 5-78 Common mode 5 ADD INVERT SUBTRACT . . . . . . . . . . . . . . 5-4 Confidence 5 CONFIDE NCE CHECK . . . . . . . . . . . . . . . 5-18 Cursor limited measurements 5 MEA SURE M[...]

FUNCTION INDEX I - 5 Entry Refer to chapter/function Page G Glitch 5 PEAK DETECTION . . . . . . . . . . . . . . . . . . 5-51 Glitch trigger 5 GLITCH TRIGGER . . . . . . . . . . . . . . . . . . . 5-36 GND 5 INPUT COUPLING . . . . . . . . . . . . . . . . . . . 5-40 H Hard copy 5 PRINTING AND PLOTTING . . . . . . . . . . . . 5-53 High level 5 VOL T ME[...]

I - 6 FUNCTION INDEX Entry Refer to chapter/function Page Memory 4.9 MEMORY FUNCTIONS . . . . . . . . . . . . . . . 4-49 Memory back-up 2.2 MEMORY BACK-UP BA TTERIES . . . . . . . . 2-3 Memory bar 5 CURSORS . . . . . . . . . . . . . . . . . . . . . . . . . 5-19 Memory expansion 5 ACQUISITION LENGTH . . . . . . . . . . . . . . . 5-2 Minimum voltage [...]

FUNCTION INDEX I - 7 Entry Refer to chapter/function Page S Safety 1 OP ERA TORS SAFETY. . . . . . . . . . . . . . . . . 1-1 Sampling 5 TIME BASE MODES . . . . . . . . . . . . . . . . . . 5-73 APPENDIX N . . . . . . . . . . . . . . . . . . . . . . . . N-1 Save 5 SETUPS . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-67 Screen 5 SCREEN CONTR[...]

I - 8 FUNCTION INDEX U User text 5 USER TEXT . . . . . . . . . . . . . . . . . . . . . . . . 5-87 V V ert ical deflection 4.4 VERTICAL DEFLECTIO N . . . . . . . . . . . . . 4-13 V ertical functions 4.7 ADV ANCED VERTICAL FUNCTIONS . . . . 4-29 V ert ical magnify 5 DIS PLA Y MENU . . . . . . . . . . . . . . . . . . . . . 5-30 V olt cursors 5 CURSORS[...]