Fluke 2620A manuale d’uso

® 2620A/2625A Hydra Series II Data Acquisition Unit Hydra Series II Data Logger Users Manual PN 686675 November 1997 © 1997 Fluke Corporation, Al l rights reserved. Printed i n U.S.A. All product names are trademarks of their respective companies.[...]

LIMI TED W ARRANTY & LI MITATI O N OF LIABI LI TY Each Fluke product is warranted to be free fr om defects in material and workmanship under normal use and service. The warranty per iod is one year and begins on the date of shipment. Parts, product repair s and services are warranted for 90 days. This warranty extends only to the original buyer[...]

i Table of Contents Chapter Titl e Page 1 Introduction ........................................................................................ 1-1 The Hydra Series II Data Acquisition Unit ....................................................... 1-3 The Hydra Series II Data Logg er ...................................................................[...]

2620A/2625A Users M anual ii Using the Scan Function.................................................................................... 2-16 Reviewing Channel Data ................................................................................... 2-16 Viewing the Totalizer Count ....................................................................[...]

Contents (c ontinued) iii Autoprint: Com puter Interface Control .................................................... 4- 5 Autoprint: Output Format ......................................................................... 4-5 Memory Storage: Com puter I nterface Control ......................................... 4-6 Memory Retrieval ................[...]

2620A/2625A Users M anual iv Isolated and Shielded Sensor Config uration ............................................ 5-11 In More Detail ............................................................................................... 5- 12 6 Maintenance ....................................................................................... 6-1 Intr[...]

v List of Tables Table Titl e Page 1-1. Hydra Features ....................................................................................................... 1-4 1-2. Accessories ............................................................................................................ 1-5 2-1. Display Annunciators ...............................[...]

2620A/2625A Users M anual vi 6-3. Performance Tests (Voltage, Resistance, and Frequency ) .................................... 6-8 6-4. Perform ance Tests for Thermocouple Temperature Function (I PTS- 68/ITS- 90) . 6-13 6-5. Performance Tests for RTD Tem perature Function (Resistance) (DI N/I EC 751 Amendm ent 1) (I PTS-68) ........................[...]

vii List of Figures Figure Titl e Page 2-1. Adjusting Handle ................................................................................................... 2-3 2-2. Front Panel ............................................................................................................. 2-5 2-3. Left Display ....................................[...]

viii Caution THIS IS AN IEC SAFETY CLASS 1 PRODUCT. BEFORE USING, THE GROUND WIRE IN THE LINE CORD OR THE REAR PANEL BINDING POST MUST BE CONNECTED FOR SAFETY. Interference Information This equipment generates and uses radio frequency ener gy and if not installed and used in strict accordance with the manufacturer’s instr uctions, may cause inter[...]

ix Safety Terms in t hi s M anual This instrument has been designed and tested in accordance with IEC publication 1010, Safety Requirements for Electrical Measuring, control and Laboratory Equipment. This Users Manual contains information, warnings, and cautions that must be followed to ensure safe operation and to maintain the instrument in a safe[...]

2620A/2625A Users M anual x AC Power Source The instrument is intended to operate from an ac power source that will not apply more than 264V ac rms between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is required for safe operation. DC Power S[...]

xi Getting Started Introduct ion This section will have you operating Hydra in a matter of minutes. All basic operating information is covered in this short Getting Started guide. Subsequent chapters of the manual cover the instrument in more detail. Note This manual contains information and warnings that must be followed to ensure safe operation a[...]

2620A/2625A Users M anual xii this example, "OFF" is lit if you’ re working w ith channel 0, and have already performed the Configuration Reset). 3. Press G , D to cycle through the choices for measurement function. For now, select "V AC", to set up the channel for A C voltage measurements. 4. Press E to confirm your choice. T[...]

Getting Starte d (c ontinued) xiii select the mode (“Mode” in right display) from “All” to output all scan data, “ALAr” to output only alarm data, or “trAnS” to output data scanned only when the Hydra goes into or out of alarm. Once the destination and mode have been set, enable Memory Storage by pressing: print. The “PRN” annun[...]

2620A/2625A Users M anual xiv Note You cannot activate the Monitor function if the selected channel is set up as OFF; the instrument gives a long beep and ignores your request. The "MON" annunciator comes on, and the instrument starts taking measurements on the selected channel. If you haven’ t connected the input leads to a signal, the[...]

Getting Starte d (c ontinued) xv 20 . . . . . . . 0 LAST MIN MAX LAST MIN MAX oo24f.eps Press N or C to remove the Review data from the display when you’ re through. The remainder of this manual covers all aspects of using Hydra. Glance over the Table of Contents; you’ ll find that each section presents an additional layer of information. You c[...]

2620A/2625A Users M anual xvi[...]

1-1 Chapter 1 Introduction Title Page The Hydra Series II Data Acquisition Unit ....................................................... 1-3 The Hydra Series II Data Logg er ...................................................................... 1-3 Options and Accessories ..............................................................................[...]

2620A, 2625A Users M anual 1-2[...]

Introduction The Hydra Series II Data Acquisition Unit 1 1-3 Note This manual contains information and warnings that must be followed to ensure safe operation and retain the instrument in safe condition. The Hydra Serie s II Data Ac quisition Unit The Hydra Series II Data Acquisition U nit (Model 2620A) is a multi-channel data acquisition unit able[...]

2620A, 2625A Users M anual 1-4 Table 1-1. Hydra Features • Channel Scanning Can be continuous s canning, sc anning at an interval time, single s cans, or triggered (internal or external) sc ans. • Channel Monitoring Make m easurements on a single channel and view these meas urements on the dis play. • Channel Scanning and Monitoring View meas[...]

Introduction Where to go From Here 1 1-5 Accessories Accessories available for the instrument are described in Table 1-2. Table 1-2. Accessories Model Description 80I-410 80i-1010 Clamp-On DC /AC Current Probes. 80J-10 Current Shunt. 2620A-05K Field-installable IEEE-488 Option k it (Hydra Data Acquisition Unit only ). 2620A-901 Hydra Data Logger Ap[...]

2620A, 2625A Users M anual 1-6 Gettin g Starte d Provides a quick introduction to instrument setup and operation. Chapter 1 Int r oduction Describes standard features, options, and accessories for the Fluke Hydra Series II Data Acquisition Unit and H ydra Series II Data Logger. Also, this chapter discusses the organization and intended uses of this[...]

2-1 Chapter 2 Overview Title Page Introduction ....................................................................................................... 2-3 Setting Up the I nstrum ent .................................................................................. 2-3 Unpacking and Inspecting the Instrum ent .......................................[...]

2620A, 2625A Users M anual 2-2[...]

Overview Introduction 2 2-3 Introduct ion Chapter 2 provides an overview of the major features of the instrument. Comprehensive details on all instrument features are found in Chapter 3 (for front panel operation) and Chapter 4 (for computer interface operation.) Setting Up the Instrumen t Unpacking and Inspecti ng t he Instrument The following ite[...]

2620A, 2625A Users M anual 2-4 Line Power Warning To avoid shock hazard, connect t he i nstrument power cord t o a power receptacle w i t h eart h ground. Plug the line cord into the connector on the rear of the instrument. The instrument operates on any line voltage between 90 and 264V ac without adjustment, and at any frequency between 45 and 440[...]

Overview Setting Up the Instrument 2 2-5 CAL ENABLE V 300V MAX POWER REVIEW LAST MAX MIN REM AUTO SCAN MON SET Mx+B FUNC ALARM ° C ° F RO mV AC DC x1Mk Hz LIMIT HI LO OFF CAL PRN EXT CH TR COM 12 CLOCK CLEAR LOCAL COMM ZERO RATE MODE CANCL Ω SINGLE TRIGS Ω FUNC ALRM Mx+B INTVL SHIFT ENTER LIST PRINT REVIEW TOTAL SCAN MON POWER BUTTON ACTIVE M[...]

2620A, 2625A Users M anual 2-6 REVIEW LAST MAX MIN REM AUTO SCAN MON x1Mk LIMIT HI LO OFF CAL PRN EXT SET Mx+B FUNC ALARM ° C ° F RO mV AC DC Hz CH TR 12 Ω F oo03f.eps Figure 2-3. Left Display REVIEW LAST MAX MIN REM AUTO SCAN MON SET Mx+B FUNC ALARM ° C ° F RO mV AC DC x1Mk Hz LIMIT HI LO OFF CAL PRN EXT CH TR 12 Ω F oo04f.eps Figure 2-4. [...]

Overview Setting Up the Instrument 2 2-7 Table 2-1. Display Annunciators MON Indicates that the M onitor function is enabled. SCAN Indicates that the Sc an function is enabled. Scanning c an be enabled as a single scan (SING LE K Q ), with a sc an interval, with an alarm-triggered s can, or as an externally triggered s can. CH Indicates that the c [...]

2620A, 2625A Users M anual 2-8 Table 2-1. Display Annunciators (cont) "1" Lit when alarm limit 1 is being defined. Also lit when display ing a measurem ent value (LAST, Monitor) whic h has exc eeded alarm limit 1. "2" Lit when alarm limit 2 is being defined. Also lit when display ing a measurem ent value (LAST, Monitor) whic h h[...]

Overview Operating Modes 2 2-9 Input Channels The instrument provides one input (channel 0) on the front panel and 20 inputs (channels 1 .. 20) through a connector on the rear panel. Channels 0, 1, and 11 can measure a maximum of 300V; all other channels can measure a maximum of 150V. Caution The maximum input that can be appl ied between any t erm[...]

2620A, 2625A Users M anual 2-10 • Active Mode if this mode was in effect prior to the cycling of power. Scanning, monitoring, or combined scanning/monitoring is resumed. • Inactive Mode if the instrument was in Inactive Mode or Configuration Mode prior to cycling of power. When in Inactive Mode, the instrument shows configuration information fo[...]

Overview Front Panel Buttons 2 2-11 Front Pane l Buttons Go ahead and press any front panel button. The instrument always provides an audible response to each button press. Valid entries yield a short beep; incorrect entries yield a longer beep. Don’ t worry if you press an inappropriate button and get a long beep; you can’ t damage the instrum[...]

2620A, 2625A Users M anual 2-12 Table 2-2. Front Panel Pushbuttons (cont) M Turns the Monitor func tion on or off. I Allows you to c hange the scan interv al. Scanning becomes continuous when the interval is s et to 0:00:00. U Enables/disables logging measurements to the printer (Autoprint - RS-232 only) or to internal data memory (M emory Storage)[...]

Overview Setting up a Channel 2 2-13 1. Select a channel to set up: G D Look for the desired channel number in the right display. 2. Press the following buttons to change the setup: F SET and FUNC come on bright, along w ith the present setting for measurement function. G D Cycle through the choices for measurement function. E Accept your choice of[...]

2620A, 2625A Users M anual 2-14 Note Any old alarm status/limits, R eview array values, or scaling parameters are automatically cleared whenever you change a channel’ s function. Setting Ala rm Limits a nd Mx+B Scaling Va lues Alarm limits and Mx+B scaling values are set in a manner very similar to that used for the channel function. Begin by pre[...]

Overview Setting the Scan Interval 2 2-15 Mx+B S caling The menu for setting Mx+B scaling values takes you through the following steps: • Set the M value (sign and number). • Set the decimal point location for the M value. • Set the multiplier for the M value (m, x1, k, M). • Set the B value (sign and number). • Set the decimal point loca[...]

2620A, 2625A Users M anual 2-16 Using the Monit or Funct i on The Monitor function repeatedly measures the displayed channel. Press M to activate the Monitor function. Use G and D to change the monitored channel; undefined channels (those set to OFF) are automatically skipped over. Since the instrument cannot take measurements on a channel that has[...]

Overview Viewing the Totalizer Count 2 2-17 To clear out the contents of the Review array, press N to call the review data up to the display, and then select CLEAR ( K N ). The entire array is then cleared. All array values, including the displayed value, are changed to "-----". If a scan is occurring when a review clear is requested, new[...]

2620A, 2625A Users M anual 2-18 Using the Rack Mount Kit Use the M00-200-634 Rack Mount Kit to mount the instrument in a standard 19-inch rack. First, rotate the two bottom feet on the instrument 180 degrees so that the support pads point up. Then install the instrument per the instructions provided with the Rack Mount Kit.[...]

3-1 Chapter 3 Operating the Instrument from the Front Panel Title Page Introduction ....................................................................................................... 3-3 Operating Modes ............................................................................................... 3-3 Other Displayed Data .....................[...]

2620A, 2625A Users M anual 3-2 Front Panel Review Only Function ............................................................... 3-26 Front Panel Monitor Only Function .............................................................. 3-26 Com puter Interface- Initiated Lockouts ......................................................... 3-27 REM Annuncia[...]

Operating the Instrument from the Front P anel Introduction 3 3-3 Introduct ion Chapter 3 describes how to use the instrument features that were introduced in Chapter 2. The introductory information in Chapter 2 is designed to give you a feel for the instrument’ s controls and display. The information presented here in Chapter 3 adds more detail [...]

2620A, 2625A Users M anual 3-4 Other Disp layed Data An array of "MIN", "MA X", and "LAST" values for each channel is updated whenever scan measurements are taken. This Review array can be displayed from Active or Inactive (but not Configuration) Mode by pressing N . The constantly updated Totalizer count can also be d[...]

Operating the Instrument from the Front P anel Channel Configuration 3 3-5 Table 3-1. Configuration Reset Settings Perform a Configuration Res et to restore these conditions by press ing and holding C while cy cling POWER ON. Channels 0 - 20: OFF. Measurem ent rate: Slow. Scaling (M): (B): 1 (all channels) 0 (all channels) Alarm parameters : Limit-[...]

2620A, 2625A Users M anual 3-6 through both a known resistance and the sensed resistance. The resulting voltages are measured and appropriate conversions are applied to the measurement, yielding a displayed output in ohms. Frequency is measured by counting cycles for a known time period. The measurement represents the frequency observed during the [...]

Operating the Instrument from the Front P anel Channel Configuration 3 3-7 Table 3-3. Resistance Channel Function Range (Note 1) Terminals PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 0 1 . . 20 OFF V DC V AC Ω Hz ° C or ° F Auto 300.00 Ω 3.0000 k Ω 30.000 k Ω 300.00 k Ω 3.0000 M Ω 10.000 M Ω 2T 4T (Completes Selection and ret[...]

2620A, 2625A Users M anual 3-8 Table 3-5. Thermocouple Temperature Channel Function Range (Note) PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 1 . . 20 OFF V DC V AC Ω Hz ° C or ° F J K E T N R S b C Pt (Completes Selection and returns to Inactive M ode) Note: The nine thermocouple c hoices and related temperature m easurement ranges are: [...]

Operating the Instrument from the Front P anel Channel Configuration 3 3-9 Table 3-6. RTD Temperature Channel Function Type (Note 1) Terminals (Note 2) R0 (Ice Point) (Note 3) PRESS THESE BUTTONS: TO SELECT FROM THESE CHOICES: 0 1 . . 20 OFF V DC V AC Ω Hz ° C or ° F J K E T N R S b C Pt 2T 4T 100.00 Complete s sele ctio n and returns to Inacti[...]

2620A, 2625A Users M anual 3-10 Alarm evaluation is not carried out for a channel if: • The limit sense is changed to "OFF ". Alarm checking and the alarm limit values are re-enabled by setting limit sense to "HI" or "LO". • An open thermocouple has been detected on that channel (thermocouple temperature function o[...]

Operating the Instrument from the Front P anel Channel Configuration 3 3-11 Alarm annunciation is disabled when the instrument is in Inactive or Configuration Mode. ALAR M annunciation and evaluation follow these rules: 1. When any channel reading from the latest scan is in alarm (but the presently displayed channel is not in alarm or a scan interv[...]

2620A, 2625A Users M anual 3-12 At any Configuration Reset (power up C or computer interface *RST), alarm limits on channels 4 through 20 are assigned to Digital I/O lines 4 through 7 in the "ORed" pattern shown in Table 3-8. These assignments can be changed via the Computer Interface. Each limit ( S or T ) for a channel can be assigned t[...]

Operating the Instrument from the Front P anel Channel Configuration 3 3-13 be changed at any point is brightly lit (solid for digits, flashing for other annunciators); all other elements are dimly lit at this time. Table 3-9 presents a full description of the Mx+B configuration sequence. If you press C while setting the "M" value (anytim[...]

2620A, 2625A Users M anual 3-14 Table 3-9. Mx+B Selection Channe l Sign, M Value Decimal Point Position Multiplier (Note 1) PRESS THESE BUTTONS: G D B G D H J E G D H J E G D H J E TO SELECT FROM THESE CHOICES: 0 1 . . 20 ± 0000 0000.0 000.00 00.000 0.0000 m x1 k M (Continue to B value below) Sign, M Value Decimal Point Position Multiplier (Note 1[...]

Operating the Instrument from the Front P anel Instrument Configuration 3 3-15 This number editing technique occurs during Configuration Mode operations whenever you are setting a numeric value. Instances of number editing include the following: • R0 (RTD)Table 3-6 • Alarms Table 3-7 • Mx+B Scaling Table 3-9 • Scan Interval TimeTable 3-10 ?[...]

2620A, 2625A Users M anual 3-16 Table 3-11. Measurement Rate Selection Press thes e buttons: RATE( KJ )] G D E To select from these choi ces: SLO FAST (Completes s election and returns to Inactiv e Mode) Triggering To set the scan triggering type from the front panel, use the procedure shown in Table 3- 12. Table 3-12. Trigger Type Selection Press [...]

Operating the Instrument from the Front P anel Measurement Connections 3 3-17 Setting Dat e and Ti me of Day The instrument features a built-in, battery-maintained clock and calendar. Verify or change the settings using the steps shown in Table 3-13. If necessary, refer to "Entering and Changing Numeric V alues" for a more detailed descri[...]

2620A, 2625A Users M anual 3-18 DC Volts, AC Vol t s, Frequency, and Thermocoupl es Any analog input channel (0 through 20) can be used to measure dc volts, ac volts, or frequency. For channel 0, use the two terminals on the front panel. For channels 1 through 20, use the H (high) and L (low) inputs on the rear panel Input Module. Note The terminal[...]

Operating the Instrument from the Front P anel Measurement Connections 3 3-19 L H L H L H H L H L H L H L H L H L H L H L L H L H HL H L H L H L H L H L H L HL HL HLHLHLHLHL HLHLHL HL HLHLHLHLHLHLHLHLHL STRAIN RELIEF 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20 oo08f.eps Figure 3-2. Input Module Connections[...]

2620A, 2625A Users M anual 3-20 Resistance and RTD For all channels (0 through 20), 2-terminal resistance or RTD measurements are allowed. Four-terminal measurements can be made on channels 1 through 10 only. Refer to Figure 3-3. For each channel configured for 4-terminal measurements (channels 1-10 only), a second channel (numbered 10 higher than [...]

Operating the Instrument from the Front P anel Measurement Connections 3 3-21 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 2-WIRE (2T) CONNECTION RESISTANCE OR RTD SOURCE USE H AND L TERMINALS FOR ANY CHANNEL. • CHANNEL 0 ON FRONT PANEL • CHANNELS 1 [...]

2620A, 2625A Users M anual 3-22 Totalizing General Event counting (totalizing) is commonly used on production lines for counting items. The instrument counts events by detecting low-to-high voltage transitions; each low-to- high transition increments the totalizer value by one. The maximum count is 65535; "OL" (for "overload") i[...]

Operating the Instrument from the Front P anel List Button Functions 3 3-23 Table 3-15. Rev iew Array Activate (Note 1) Review Points Deactivate (Note 3) NH J N 20 LAST M IN MAX or G • C • • • D 0 LAST MIN M AX Note 1. Review array can be entered only from a c hannel that is defined for some type of meas urement ("VDC", "VAC&[...]

2620A, 2625A Users M anual 3-24 07:41:37 02/09/91 CH LAST VALUE MAX VALUE MIN VALUE 1: 097.32 mVDC 098.51 mVDC 096.10 mVDC 2: 0.0973 VDC 0.0985 VDC 0.0961 VDC 3: 00.097 VDC 00.099 VDC 00.096 VDC 4: 000.10 VDC 000.10 VDC 000.10 VDC 5: OL mVAC OL mVAC OL mVAC 6: OL VAC OL VAC OL VAC 7: 05.511 VAC 05.582 VAC 05.414 VAC 8: 005.51 VAC 005.58 VAC 005.41 [...]

Operating the Instrument from the Front P anel Autoprint 3 3-25 Autoprint The front panel setup procedure is summarized in Table 3-17. Begin this procedure by selecting MODE ( K U ). Select the scan data destination ("dESt" in right display) as "Print" (left display). For the Hydra Series II Data Logger, a destination of "b[...]

2620A, 2625A Users M anual 3-26 Table 3-17. Autoprint/Memory Storage Selection Destination (“dESt”) (Note 1) Mode (“MO dE”) (Note 2) Press thes e buttons:P MODE KU ) G D E G D E To select from these choic es: Print StorE both ALL ALAr trAnS Note 1. “Print” Sends data to be printed through the RS-232 interface. “StorE” Sends data to [...]

Operating the Instrument from the Front P anel REM Annunciator 3 3-27 G and D can now be used to change the monitored channel. All other front panel buttons are locked out; a long beep results from their use. Press both F and B again to deactivate the Monitor Only function and return the instrument to normal front panel button operation (regular Mo[...]

2620A, 2625A Users M anual 3-28[...]

4-1 Chapter 4 Using the Computer Interface Title Page Introduction ....................................................................................................... 4-3 Front Panel and Computer I nterface Operations........................................... 4-3 Types of Computer I nterface ....................................................[...]

2620A, 2625A Users M anual 4-2 Status Byte Register.................................................................................. 4-19 Reading the Status Byte Reg i ster ............................................................. 4-20 Service Request Enable Register .............................................................. 4-21 Instrum e[...]

Using the Computer Interface Introduction 4 4-3 Introduct ion The instrument can be operated from a host via commands sent through the rear panel computer interface. The host can be a terminal, controller, PC, or other computer. This chapter describes how to set up and operate the instrument via the RS-232 interface (standard with Hydra Series II D[...]

2620A, 2625A Users M anual 4-4 Setting Communi cat i on Parameters (RS-232) Baud rate ("bAUd"), parity ("PAR"), and echo ("Echo") parameters can be set directly by the user; number of data bits and number of stop bits cannot be set. Refer to Figure 4- 1. For the instrument and host to communicate via the RS-232 interfa[...]

Using the Computer Interface Using the RS-232 Computer Interface 4 4-5 5. Press G or D to scroll to odd, even, or no parity, respectively. Press EE to select the displayed parity. 6. "Echo" now appears in the right display, with "On" or "OFF" appearing on the left display. When Echo is "On", each character se[...]

2620A, 2625A Users M anual 4-6 10:33:45 5/11/90 Lines following the time and date contain measurement data for channels that have been set up for this session. The last line of the printout contains the Totalizer count and the status of the digital I/O lines. Channel data is formatted to fit three readings onto an 80-column line. Each reading provi[...]

Using the Computer Interface Using the RS-232 Computer Interface 4 4-7 Data for the oldest set of scan readings in Hydra Series II Data Logger memory can be retrieved with the LOG? query. Each set of scan readings is cleared from memory w hen read with LOG ? The LOG? query returns the follow ing information: • Date and time at the start of the lo[...]

2620A, 2625A Users M anual 4-8 To connect the instrument to a specific brand of RS-232 printer, use the cable that would be used to connect that printer to an RS-232 port on an IBM PC/AT (DB-9 connector). The RS42 cable is compatible w ith most serial printers; contact Fluke for printer compatibility information. Once the cable is connected, turn t[...]

Using the Computer Interface Using the IEEE-488 Interface 4 4-9 RS-232 Prompt s The instrument parses and executes, in turn, each command received from the host over the RS-232 interface. The instrument returns one of the following three response prompts to indicate the results of command execution: => No errors; the command w as successfully pa[...]

2620A, 2625A Users M anual 4-10 10 ’ EXAMPLE.BAS Hydra program to scan VDC, VAC, OHMS, FREQ, or TEMP 20 ’ - initialize RS232 communication and set up Hydra 30 ’ - display and record measurement data in "TESTDATA.PRN" 40 ’ Hydra must be set up for RS232, 9600 baud, no parity (from front panel) 50 KEY OFF 60 ’ Open communications [...]

Using the Computer Interface Using the IEEE-488 Interface 4 4-11 500 PRINT #1, "FUNC " + STR$(I) + "," + CMD$ 510 GOSUB 800 520 NEXT I 530 ’ 540 LOCATE 23,1 550 PRINT "Measuring " + CMD$ + " " ’ Print to screen 560 ’ 570 FOR I = 1 TO 3 ’ Scan 3 times 580 PRINT #1, "*TRG" ’ Start a single 5[...]

2620A, 2625A Users M anual 4-12 Table 4-2. IEEE-488.1 Capabilities Capability Description SH1 and AH1 R ead and write bus hands haking, including hold off. T5 Basic talk er with serial poll and without talk only mode. Serial poll is used to return the instrument s tatus byte to the controller. TE0 No extended talk er. L4 Basic lis tener without lis[...]

Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-13 2. Press D to scroll to "IEEE"; then press E to enable the IEEE-488 interface and disable the RS-232 interface. "IEEE" will not appear in the left display if the IEEE- 488 interface is not installed. 3. The instrument must now be assigned an address ([...]

2620A, 2625A Users M anual 4-14 Input Str ings The instrument processes and executes valid input strings sent by the host. A valid input string is one or more syntactically correct commands, separated by semicolons (;), followed by an input term inator. ASCII and IEEE-488 bus codes are provided in Appendix B. The instrument stores received input in[...]

Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-15 Select ohms function for channel 1 Select 30-kilohm range Select 2-wire (2T) connections 2 3, FUNC 1, OHMS, Select temperature measurement for channel 12 Select K-type thermocouple input K FUNC 12, TEMP, Select RTD (DIN/IEC 751) Select 2-wire (2T) connections RTD_R0 12, [...]

2620A, 2625A Users M anual 4-16 Sending Numeric Values to t he I nst r ument (RS- 232 and I EEE- 488) Numeric values can be sent to the instrument as integers, real numbers, or real numbers with exponents, as shown in the following examples: EXAMPLE EXPLANATION +12345 Sends the signed inte ger “+12345” 123.45 Sends the real number “123.45” [...]

Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-17 loaded, the Message Available (MAV ) bit in the Status Byte Register is set true. (For more information, see "Status Byte Register" later in this chapter.) Numeric output from the instrument is returned as shown in the following examples: • Integer Values Exa[...]

2620A, 2625A Users M anual 4-18 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 & & & & & & & & Logical OR Standard Event Status Register Read Using * ESR? Standard Event Status Enable Register Read Using * ESE? Write to Using * ESE Power On Command Error Execution Error Device Dependent Error Query Error Operation Complete IEB 1 2 [...]

Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-19 Table 4-4. Status Byte Register Bit Name Description 0 IEB Instrum ent Event Bit. When any bit in the Instrum ent Event Regist er is set and the corresponding m ask bit(s) in the Ins trument Event Enable regis ter is set, this Instrum ent Event Bit in the Status Byte w i[...]

2620A, 2625A Users M anual 4-20 Table 4-5. Event Status Register Bit Name Description 0 OPC Operation Com plete. Set true (1) upon execution of the *O PC comm and, indicating that the instrum ent has com pleted all selected pending operations . 1 not used Always set to 0. 2 QYE Query Error. Generated true (1) by the INTERRUPTED or UNTERMINATED mess[...]

Using the Computer Interface General Information ( RS-232 and IEEE-488) 4 4-21 Service Request Enable Register The Service Request Enable Register (SRE) is an 8-bit register that enables or disables (i.e., masks) corresponding summary messages in the Status Byte Register (STB). The instrument can be programmed to make a service request on errors or[...]

2620A, 2625A Users M anual 4-22 Table 4-6. Instrument Event Register (IER) Note Whenever the Instrum ent Event Register is read, the condition bits are c leared. This register is used in conjunction w ith the Instrument Event Enable R egister to determine the conditions under which the Instrum ent Event Bit of the Status By te is set. Bit Name Desc[...]

Using the Computer Interface Computer Interface Command Set 4 4-23 Table 4-7. Command and Query Summary Alarms ALARMS? Activ e Alarms Q uery ALARM_ASSOC Associate Alarm Output ALARM_ASSOC? Alarm As sociation Query ALARM_ASSOC_CLR Clear Alarm Ass ociation ALARM_DO_LEVEL Set Alarm Output Level ALARM_DO_LEVELS? Alarm Output State Query ALARM_LIMIT Set[...]

2620A, 2625A Users M anual 4-24 Table 4-7. Command and Query Summary (cont) Lock LOCK Lock/unloc k front panel control key s LOCK? Returns ins trument front panel lock s tatus Measurem ent Rate RATE Select Meas urement Rate RATE? Measurem ent Rate Query Measurem ent Values LAST? Channel’ s Last Sc an Value MAX? Channel’ s Max imum Value MIN? Ch[...]

Using the Computer Interface Computer Interface Command Set 4 4-25 Table 4-7. Command and Query Summary (cont) Response Form at FORMAT Response Form at FORMAT? Query R esponse Format Review Array REVIEW_CLR Clear Review Values Scan INTVL Set Scan Interval INTVL? Scan Interval Query SCAN Enable/Disable Scanning SCAN? Return Scan Status SCAN_TIME? Ti[...]

2620A, 2625A Users M anual 4-26 Table 4-8. Command and Query Reference *CLS Clear Status Clears all event regis ters sum marized in the status byte, exc ept for Mess age Available, which is cleared only if *CLS is the first mess age in the queue. *ESE Event Status Enable Sets the Event Status Enable Register to the given v alue. *ESE <value> [...]

Using the Computer Interface Computer Interface Command Set 4 4-27 Table 4-8. Command and Query Reference (cont) *SRE Service Reques t Enable Sets the Servic e Request Enable Register to the giv en value. *SRE <v alue> <value> = (0 .. 255) If the value is greater than 255, a Com mand Error is generated. The value of bit 6 is ignored, s [...]

2620A, 2625A Users M anual 4-28 Table 4-8. Command and Query Reference (cont) ALARMS? Activ e Alarms Q uery Returns alarm s tatus for the indicated c hannel(s). The value returned represents data from the most recent s can. The mos t recent scan is the scan in progres s or, if scanning is not in progress, the las t completed scan. ALARMS? <chann[...]

Using the Computer Interface Computer Interface Command Set 4 4-29 Table 4-8. Command and Query Reference (cont) ALARM_ASSOC? Alarm As sociation Query Returns alarm output as sociations for the indic ated channel and alarm limit. ALARM_ASSOC? <channel>,<lim it_num> <channel> = (4 .. 20) <limit_num> = 1 2 Returns the digital [...]

2620A, 2625A Users M anual 4-30 Table 4-8. Command and Query Reference (cont) ALARM_LIMIT Set Alarm Lim it Store alarm limit information for the indic ated channel and limit. The fields to be given (in order) are: ALARM_LIMIT <c hannel>,<limit_num>,<sens e>,<value> <channel> = (0 .. 20) <limit_num> = 1 2 <sens[...]

Using the Computer Interface Computer Interface Command Set 4 4-31 Table 4-8. Command and Query Reference (cont) DIO_LEVELS? Digital I/O State Query Returns digital input and output lev els for the eight configurable digital I/O lines. Returns an integer value repres enting the actual states of the digital I/O lines. The low-order eight bits are us[...]

2620A, 2625A Users M anual 4-32 Table 4-8. Command and Query Reference (cont) MEASUREMENT UNITS STRING Scaled “MX+B” Volts DC “VDC” Volts AC “VAC” Resista nce “OHMS” Frequency “Hz ” Temperature “C” Temperature “F” FORMAT? Query R esponse Format Returns the format pres ently in use: The default. IEEE-488.2-compatible. No [...]

Using the Computer Interface Computer Interface Command Set 4 4-33 Table 4-8. Command and Query Reference (cont) For temperature functions , the "range" is a thermocouple ty pe (J, K, E, T, N, R, S, B, C) or DIN/IEC 751 R TD (PT). Use of any other v alue causes an Ex ecution Error. <terminals> = 2 (2-terminal) 4 (4-terminal) Specifi[...]

2620A, 2625A Users M anual 4-34 Table 4-8. Command and Query Reference (cont) IEE? Instrum ent Event Enable Query Returns the present v alue of the Instrument Ev ent Enable Register as an integer. IER? Instrument Ev ent Register Query Returns the value of the Ins trument Event Regis ter as an integer, then clears all bits . INTVL Set Scan Interval [...]

Using the Computer Interface Computer Interface Command Set 4 4-35 Table 4-8. Command and Query Reference (cont) LOCK Lock the ins trument front panel so that only us e of the arrow keys and the simultaneous use of F and B are recogniz ed. The following LOCK com mands are rec ognized: Unlo ck Lock and begin rev iew. If the instrument is not in revi[...]

2620A, 2625A Users M anual 4-36 Table 4-8. Command and Query Reference (cont) The Totalizer count is returned as a scientific notation value in the range 0 through 65535 (00.000E+3 through 65.535E+3). If the Totalizer has overflowed, a value of 1E+9 is returned. An Execution Error is generated if this query is us ed with the IEEE-488 interface. The[...]

Using the Computer Interface Computer Interface Command Set 4 4-37 Table 4-8. Command and Query Reference (cont) LOG_MO DE Determines treatment of new s can data when memory is full (RS-232 only) LOG_M ODE <mode> 0 Wrap around. When mem ory is full, oldest s cans are dis carded to make room for new scans. This is the default mode. 1 Disc a rd[...]

2620A, 2625A Users M anual 4-38 Table 4-8. Command and Query Reference (cont) MIN? Channel’ s Minim um Value Returns minim um value(s) for c hannels meas ured in the most recent scan. The v alue returned represents data from the m ost recent s can. The most rec ent scan is the s can in progress or, if scanning is not in progress, the las t comple[...]

Using the Computer Interface Computer Interface Command Set 4 4-39 Table 4-8. Command and Query Reference (cont) NEXT? Next Sc an’ s Values The NEXT? query returns data v alues for the next s can to complete. If a scan is in progress when the NEXT? query is proces sed, the data values returned are from the sc an in progress. If a sc an is not pre[...]

2620A, 2625A Users M anual 4-40 Table 4-8. Command and Query Reference (cont) PRINT_TYPE? Data Logging Type Query (RS-232 only ) Return the Autoprint or internal Memory Storage type and the type of scan data logged. Returns 0 (AUTOPRINT), 1 (STORE), O R 2 (BOTH), and 0 (ALL), 1 (ALARM), or 2 (TRAN S). For example, "1,0" could be returned,[...]

Using the Computer Interface Computer Interface Command Set 4 4-41 Table 4-8. Command and Query Reference (cont) REMS Remote without Lock out (RS-232 only) Enter the IEEE-488.1 remote without front panel lockout (REM S) state. The REM annunciator is lit, and only the following three front panel buttons are now activ e (with special R EMS functional[...]

2620A, 2625A Users M anual 4-42 Table 4-8. Command and Query Reference (cont) RWLS Remote with Lock out (RS-232 only) Enter the IEEE-488.1 remote with front panel lockout (RWLS) s tate. All front panel buttons are disabled, and the RE M annunciator is lit. If this com mand is used with the IEEE-488 interfac e, an Execution Error is generated. SCALE[...]

Using the Computer Interface Computer Interface Command Set 4 4-43 Table 4-8. Command and Query Reference (cont) SCALE_MB? Mx+B Scaling Values Query Return the M and B sc aling values for the indicated c hannel. SCALE_MB? <channel> <channel> = (0 .. 20) If the channel number giv en is invalid, an Exec ution Error is generated. Remember [...]

2620A, 2625A Users M anual 4-44 Table 4-8. Command and Query Reference (cont) Use the lowes t two bits of the v alue given as indiv idual flags to specify the temperature configuration. Therefore, the v alue given must be in the range from 0 through 3 or an Exec ution Error is generated. These settings affec t every channel; they cannot be set for [...]

Using the Computer Interface Computer Interface Command Set 4 4-45 Table 4-8. Command and Query Reference (cont) TOTAL Set Totalizer Count Give the Totaliz er count a new initial value. TOTAL <t_value> <t_value> = (0 .. 65535) If the value is not in the range 0 through 65,535, an Ex ecution Error is generated. Clear the Totalizer count [...]

2620A, 2625A Users M anual 4-46 Table 4-8. Command and Query Reference (cont) TRIGGER ? Trigger Type Query Returns an integer representing the pres ent trigger type: 0 (off) 1 (on) 2 (alarm)[...]

5-1 Chapter 5 Additional Considerations Title Page Introduction ....................................................................................................... 5- 3 Measurement Rate ............................................................................................. 5- 3 Advanced Trigg er Mechanisms ................................[...]

2620A, 2625A Users M anual 5-2[...]

Additional Considerations Introduction 5 5-3 Introduct ion Chapter 5 discusses some topics that will help you use the instrument more effectively. These considerations assume that you are familiar with the basic operation of the instrument and have some basic understanding of electronics. Measurement R ate The two measurement rates provide a choice[...]

2620A, 2625A Users M anual 5-4 Verify the trigger type over the computer interface by sending the query: TRIGGER? Single scans can be triggered via the RS-232 interface or the IEEE-488 interface by sending the *TRG command. Note that the IEEE-488 interface GET command can be used only when the IEEE-488 interface is enabled. Note If the instrument i[...]

Additional Considerations Advanced Trigger Mechanisms 5 5-5 LOW HIGH 7.0V 2.0V 0.8V –0.6V 0 VALID EXTERNAL TRIGGERS SCAN TIME SCAN HIGH ≥ 100 mS FALLING EDGE HELD 5 µ S IGNORED (SCAN IN PROGRESS) +–01 2 3 T R 0 1 2 3 4 5 6 7 Σ 9-16 V DC PWR ! +30V ALARM OUTPUTS DIGITAL I/O +– 01 2 3 T R oo15f.eps Figure 5-1. External Trigger Timing[...]

2620A, 2625A Users M anual 5-6 Monitor Al arm Enabl ed (Type 2) This corresponds to the Front Panel ALAr or Co mputer Interface TRIGGER =2 setting. When the Monitor Alarm trigger is enabled and the Monitor function is on, a scan is triggered if the monitor measurement is found to be in alarm. After this scan occurs, a monitor measurement is again m[...]

Additional Considerations When Measuring Resistance or Temperature ( Rtd) 5 5-7 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 2-WIRE (2T) CONNECTION RESISTANCE OR RTD SOURCE USE H AND L TERMINALS FOR ANY CHANNEL. • CHANNEL 0 ON FRONT PANEL • CHANNELS [...]

2620A, 2625A Users M anual 5-8 Table 5-1. Ohms Test Voltage Range Typical Full Scale Voltage 300.00 Ω 0.22 3.0000 k Ω 0.25 30.000 k Ω 0.29 300.00 k Ω 0.68 3.0000 M Ω 2.25 10.000 M Ω 2.72 • 4-Terminal Configuration In 4-terminal configuration, the instrument uses a second pair of leads to automatically eliminate measurement-lead and in[...]

Additional Considerations Making Mixed Measurements 5 5-9 average-responding measurement devices display the correct rms reading of 1.0000V (the dc component equals 0). However, consider the 2V (peak-to-peak) square wave. Both types of measurement correctly display the dc component (0V), but the instrument also correctly measures the ac component ([...]

2620A, 2625A Users M anual 5-10 DC AND AC TOTAL RMS TRUE RMS = 0.000 1.000 1.000 0.900 0.636 0.000 0.707 1.000 1.000 1.000 2D 0.000 1.000 AC-COUPLED INPUT WAVEFORM PK-PK PEAK VOLTAGES 0-PK MEASURED VOLTAGES AC COMPONENT ONLY RMS CAL * HYDRA DC COMPONENT ONLY SINE PK 0 PK-PK 2.828 1.414 1.000 1.000 0.436 0.421 1.414 2.000 0.779 0.771 1.414 2.000 2.0[...]

Additional Considerations Using Shielded Wiring 5 5-11 • Avoid connecting inputs with ac volts signals to any channel 10 numbers away from a sensitive channel (i.e. 4-terminal input channels.) • Avoid tying L (low) or (especially) H (high) inputs of a sensitive channel to earth (chassis) ground. This is very important in resistance measurements[...]

2620A, 2625A Users M anual 1. Connect the shield to L (low) at the 2620A-100 Input Module, and try connecting the sensor shield to a quiet earth ground at or very near the measurement sensor end (and at only one place), or 2. Connect the shield to L (low) at the Input Module, and try connecting the shield to earth ground (only) as close to the rear[...]

6-1 Chapter 6 Maintenance Title Page Introduction ....................................................................................................... 6- 3 Cleaning............................................................................................................. 6-3 Line Fuse ...........................................................[...]

2620A, 2625A Users M anual 6-2[...]

Maintenance Introduction 6 6-3 Introduct ion This chapter describes basic maintenance that the instrument user can perform. Do not attempt any maintenance not described in this chapter. For additional maintenance, service, and calibration procedures, qualified service personnel can refer to the Hydra Series II Service Manual (P/N 688868). Cleanin g[...]

2620A, 2625A Users M anual 6-4 Power-Line Cord Connector Line Fuse (T 125 mA, 250V, Slow Blow) Fuse Holder (Spare Fuse Provided) Complies with the limit for a class B computing device pursuant to Subpart J of Part 15 of FCC Rules +–0123 T R 0123 4567 Σ 9-16 V DC PWR ! +30V DIGITAL I/O MEETS 0871 B To Remove, Squeeze and Slide Out oo18f.eps Figur[...]

Maintenance Performance Tests 6 6-5 Table 6-1. Power-Up Error Codes Error Description 1 ROM checksu m erro r 2 External RAM test failed 3 Internal RAM tes t failed 4 Display power-up test failure 5 Display not responding 6 Instrum ent configuration corrupted 7 EEPROM instrum ent configuration corrupted 8 EEPROM calibration data c orrupted 9 A/D not[...]

2620A, 2625A Users M anual 6-6 Table 6-2. Recommended Test Equipment Instrument Type Minimum Specification Recommended Model Multifunction Calibrator D C Voltage: Fluke 5700A Range: 90 mV to 300V dc Accurac y: .005% AC Voltage: Frequency Voltage Accuracy 1 kHz 29 mV to 300V 0.05% 100 kHz 15 mV to 300V 1.25% Frequency: 10 kHz 1V rms .0125% Decade Re[...]

Maintenance Performance Tests 6 6-7 Accuracy Verificat i on Test 1. Power up the instrument and allow it to temperature stabilize for 1/2 hour. 2. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument. Select the channel 0 function and range on the H[...]

2620A, 2625A Users M anual 6-8 Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) Function Range Input Level Frequency Display Accuracy (1 year, 18-28 ° C) MIN MAX DC Volts 300 mV 0V -- -0.02 0.02 300 mV 150 mV --- 149.94 150.06 300 mV 290 mV --- 289.91 290.09 3V 2.9V --- 2.8991 2.9009 -3V -2.9V --- -2.9009 -2.8991 30V 29V --- 28.99[...]

Maintenance Performance Tests 6 6-9 Table 6-3. Performance Tests (Voltage, Resistance, and Frequency) (cont) Using inputs in decades of 1.9: 300 Ω short 0.00 0.09 190 Ω 189.93 190.12 3 k Ω short 0.0000 0.0003 1.9 k Ω 1.8992 1.9008 30 k Ω 19 k Ω 18.992 19.008 300 k Ω 190 k Ω 189.91 190.09 3 M Ω 1.9 M Ω 1.8983 1.9017 Using inputs [...]

2620A, 2625A Users M anual 6-10 3. Connect a cable from the Output VA HI and LO connectors of the 5700A to the V Ω and COM connectors on the front panel of the Hydra Series II Instrument. 4. Set the 5700A to output 0V dc 5. Using either a terminal or a computer running a terminal emulation program as the selected host, send the following commands[...]

Maintenance Performance Tests 6 6-11 Note 4-terminal connections are made using pairs of channels. 4-terminal measurements can only be made on channels 1 through 10. The accompanying pairs are channels 11 through 20. Thermocouple Temperature Accuracy Test Assure the Thermocouple Measurement Range Accuracy Test meets minimum acceptable levels before[...]

2620A, 2625A Users M anual 6-12 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L HYDRA INPUT MODULE HI HI LO LO HI SENSE V AUX CURRENT GUARD GROUND WIDEBAND 5700A NC NC OUTPUT V A Ω Ω 5700A UUT SENSE SENSE SOURCE SOURCE EX GRD : OFF 2-WIRE COMP OFF EX SN[...]

Maintenance Performance Tests 6 6-13 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H L H LH LH LH LH LH LH LH LH L 4-WIRE (4T) CONNECTION DECADE RESISTANCE BOX HYDRA INPUT MODULE oo20f.eps Figure 6-3. 4-Terminal Connections to Decade Resistance Box Table 6-4. Performance Tests for Therm[...]

2620A, 2625A Users M anual 6-14 RTD Temperature Accuracy Test The following two RTD Temperature Accuracy Tests are different in that one uses a Decade Resistance Source and the other uses an RT D. Only one of the tests need to be performed to assure operation. RTD Temperatur e Accur acy Test (Using Decade Resistance Source) Assure Channel 0’ s Ac[...]

Maintenance Performance Tests 6 6-15 RTD Temperatur e Accur acy Test (Using DIN/I EC 751) 1. Switch OFF power to the instrument and disconnect all other high voltage inputs. 2. Remove the Input Module from the rear of the instrument. Open the Input Module and connect a Platinum RTD, conforming to the European Standards IEC 751 (DIN 43760). 2-termin[...]

2620A, 2625A Users M anual 6-16 Digital Out put Test 1. Ensure that communication parameters (i.e., transmission mode, baud rate, parity, and echo mode) on the Hydra Series II and the host are properly configured to send and receive serial data. Refer to Chapter 4. 2. Switch OFF power to the instrument and disconnect all high voltage inputs. 3. Rem[...]

Maintenance Performance Tests 6 6-17 Verify that the returned value as shown on the Host screen = 255. Note The number returned is the decimal equivalent of the Digital Input binary word (inputs 0 through 7’ s status). See Table 6-7 to determine if the number returned corresponds to the bits jumpered to ground in this test. 3. Jumper input 0 to g[...]

2620A, 2625A Users M anual 6-18 5. Press the TOTAL button on the front panel of Hydra Series II. Assure Hydra Series II displays a 0 value. 6. Jumper output 0 to the Total ( ∑ ) input by connecting the ( ∑ ) terminal test lead to output 0’ s test lead. 7. Using either a terminal or a computer running a terminal emulation program, set up Hydra[...]

Maintenance Performance Tests 6 6-19 Hydra Series II’ s display should now show the totalizing value incrementing at a 10 count per second rate. Dedicated Alarm O ut put Test The Dedicated Alarm Output Test verifies that Alarm Outputs 0 through 3 are functioning properly. Because this test is dependent on voltage readings the Accuracy Verificatio[...]

2620A, 2625A Users M anual 6-20 12 11 13 14 15 16 17 18 19 20 2 1 3456789 1 0 SOURCE (4-WIRE) SENSE (4-WIRE) H L H LH LH LH LH LH LH LH LH L H LH LH LH LH LH LH LH LH L INPUT MODULE (USE STACKED BANANA JACKS) +–01 2 3 T R 0 1 2 3 4 5 6 7 Σ 9-16 V DC PWR ! +30V ALARM OUTPUTS DIGITAL I/O ALARM OUTPUT CONNECTOR V 300V MAX REVIEW LAST COM Ω FUNC A[...]

Maintenance Calibration 6 6-21 External Trigger I nput Test The External Trigger Input Test verifies that the rear panel trigger input of Hydra Series II is functioning properly. 1. Switch OFF power to the instrument and disconnect all high voltage inputs. 2. Remove the Alarm Output eight terminal connector module from the rear of Hydra Series II a[...]

2620A, 2625A Users M anual 6-22 no parts to disassemble, no mechanical adjustments to make, and the instrument can be calibrated by an automated instrumentation system. The instrument should normally be calibrated on a regular cycle, typically every 90 days or 1 year. The chosen calibration cycle depends on the accuracy specification you wish to ma[...]

Appendices Appendix Titl e Page A Specification s ...................................................................................................... . A - 1 B ASC II & I EEE - 488 Bus Code s ........................................................................... . B - 1 C I EEE - 488.2 De v ise Docu m entation Requi re m ent s .........[...]

[...]

A-1 Appendix A Specifications Introduct ion The instrument specifications presented here are applicable within the conditions listed in the Environmental chapter. The specifications state total instrument accuracy following calibration, including: • A/D errors • Linearization conformity • Initial calibration errors • Isothermality errors ?[...]

2620A/2625A Users M anual A-2 DC Voltage Input s Range Resolution Slow Fast 300 mV 10 µ V 0.1 mV 3 V 0.1 mV 1 mV 30 V 1 mV 10 mV 300 V 10 mV 0.1 V Accuracy ± (% ± V) Range 18°C to 28°C 0°C to 60°C 90 Days, Slow 1 Year, Slow 1 Year, Fast 1 Year, Slow 1 Year, Fast 300 mV 0. 018% + 20 µV 0.023% + 20 µV 0. 040% + 0.2 mV 0.067% + 20 µV 0.084% [...]

Appendices Specifications A A-3 Thermoc ouple Inputs Temperature Measurements - Accuracy (Thermocouples) (IPTS-68) Thermocouple Accuracy (±°C)* 18°C to 28°C 0°C TO 60°C Type Temperatur e (C°) 90 Days Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -100 to -30 0.43 0.44 0.91 0.55 1.09 J -30 to 150 0.38 0.40 0.81 0.58 1.02 150 to 760 0.43[...]

2620A/2625A Users M anual A-4 Temperature Measurements - Accuracy (Thermocouples) (ITS-90) Thermocouple Accuracy (±°C)* 18°C to 28°C 0°C to 60°C Type (°C) Temperatur e (°C) 90 Days Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -100 to -30 0.44 0.45 0.92 0.57 1.10 J -30 to 150 0.41 0.43 0.83 0.61 1.06 150 to 760 0.48 0.53 0.98 0.92 1.[...]

Appendices Specifications A A-5 Input Im pedance 100 M Ω minimum in parallel with 150 pF maximum Common Mode and Normal Mode Rej ect i on See Specifications, DC Voltage Inputs Cross-Talk Reject i on Refer to Appendix D Open Thermocouple Detect Small ac signal injection and detection scheme before each measurement detects greater than 1 to 4 k Ω[...]

2620A/2625A Users M anual A-6 IEC 751, Amendment 2, 100 e Platinum (ITS-90) RTD 4 Wire Accuracy* (±°C) Temperature Resolution 18°C to 28°C 0°C to 60°C (°C) Slow Fast 90 Day Slow 1 Year Slow 1 Year Fast 1 Year Slow 1 Year Fast -200.00 0.02 0.1 0.13 0.13 0.54 0.13 0.55 0.00 0.02 0.1 0.09 0.09 0.55 0.13 0.59 100.00 0.02 0.1 0.12 0.12 0.59 0.18 [...]

Appendices Specifications A A-7 1 Year Accuracy ± (% ± V) Range Frequency 18 ° C to 28 ° C 0 ° C to 60 ° C Slow Fast Slow Fast 20 Hz - 50 Hz 1.43% + 0. 25 m V 1. 43% + 0.4 m V 1. 54% + 0.25 mV 1.54% + 0.4 mV 50 Hz - 100 Hz 0.30% + 0. 25 m V 0. 30% + 0.4 m V 0. 41% + 0.25 mV 0.41% + 0.4 mV 300 mV 100 Hz - 10 k Hz 0.16% + 0. 25 mV 0.16% + 0. 4 [...]

2620A/2625A Users M anual A-8 Frequency Maximum Input at Upper Frequency 20 Hz - 50 Hz 300 V rms 50 Hz - 100 Hz 300 V rms 100 Hz - 10 kH z 200 V rms 10 kHz - 20 k Hz 100 V rms 20 kHz - 50 k Hz 40 V rms 50 kHz - 100 k Hz 20 V rms Input Im pedance 1 M Ω in parallel with 100 pF maximum Maximum Maximum Crest Factor 3.0 2.0 for rated accuracy Crest Fa[...]

Appendices Specifications A A-9 Ohms Inputs Range Resolution Typical Full Maximum Current Through Maximum Open Slow Fast Scale Voltage Unknown Circuit Voltage 300 Ω 10 m Ω 0.1 Ω 0.22 V 1 mA 3.2V 3 k Ω 0.1 Ω 1 Ω 0.25V 110 µ A 1.5 V 30 k Ω 1 Ω 10 Ω 0.29 V 13 µ A 1.5 V 300 k Ω 10 Ω 100 Ω 0.68 V 3.2 . µ A 3.2 V 3 M Ω 100 ?[...]

2620A/2625A Users M anual A-10 Freque ncy Input s Frequency Range 15 Hz to greater than 1 Mhz Range Resolution Accuracy + (% ± Hz) Slow Fast Slow Fast 15 Hz - 900 Hz 0.01 Hz 0.1 H z 0.05% + 0.02 Hz 0.05% + 0.2 Hz 9 kHz 0.1 Hz 1 Hz 0.05% + 0.1 Hz 0.05% + 1 Hz 90 kHz 1 Hz 10 Hz 0.05% + 1 Hz 0.05% + 10 Hz 900 kHz 10 Hz 100 Hz 0.05% + 10 Hz 0.05% + 10[...]

Appendices Specifications A A-11 Typica l Scanning Ra te See table below. The measurement conditions are: averaged rate over 20 scans; continuous scanning; alarm limits and Mx+B scanning set on all channels; logging data to internal memory; and RS-232 communications set at 9600 baud. Measurements were taken with short-circuit inputs on all channels[...]

2620A/2625A Users M anual A-12 Maximum Aut oranging Time (Seconds per Channel) Function Range Change Slow Fast VDC 300 mV ---------------------------- > 150 V 0.25 0.19 150 V 300 mV ---------------------------- > 0.26 0.19 VAC 300 mV ---------------------------- > 150V 4.50 4.12 150 V 300 mV ---------------------------- > 1.38 1.08 Ohms[...]

Appendices Specifications A A-13 Isolati on none dc-coupled Threshold 1.4V Hysteresis 500 mV Trigger Input Input Volt ages contact closure and TTL compati ble “high” =2.0V min, 7.0V max “low” = -0.6V min, 0.8V max Isolati on None dc-coupled Minimum Pul se Wi dt h 5 µs Maximum Frequency 5 Hz Specified Condi tions The instrument must be in t[...]

2620A/2625A Users M anual A-14 Digital and Ala rm Outputs Output Logi c Level s Logical “zero”: 0.8V max for an Iout of -1.0 mA (1LSTTL load) Logical “one”: 3.8V min for an Iout of 0.05 m A (1LSTTL load) For non-TTL loads: 1.8V max for an Iout or -20 mA Logical “zero”: 3.25 max for an Iout of -50 mA Isolati on none Real-Time Cl ock and [...]

Appendices Specifications A A-15 Altitude Operating: 2,000 m maximum Non-operating: 12,200 m maximum Vibration 0.7 g at 15 Hz 1.3 g at 25 Hz 3 g at 55 Hz Shock 30 g half sine per Mil-T-28800 Bench handling per Mil-T-28800 General Channel Capacity 21 Analog Inputs 4 Alarm Outputs 8 Digital I/O (inputs/outputs) Measurement Speed Slow rate: 4 readings[...]

2620A/2625A Users M anual A-16 Power 90V to 264V ac (no switching required), 50 and 60 Hz, 10 VA maximum 9V dc to 16V dc, 10W maximum If both sources are applied simultaneously, ac is used if it exceeds approximately 8.3 times dc. Automatic switchover occurs between ac and dc without interruption. (At 120V ac the equivalent dc voltage is ~14.5V). S[...]

B-1 Appendix B ASCII & IEEE-488 Bus Codes[...]

2620A/2625A Users M anual B-2 B 7 B 6 B 5 B 4 2 7 2 6 2 5 2 4 B 3 2 3 2 2 2 1 2 0 B 2 B 1 B 0 BITS NUL SP ! " 1 2 # $ 0@ P p NUL SOH GTL DLE MLA0 MLA16 @ MTA0 P MTA16 MSA0 MSA16 P SPACE CONTROL UPPER CASE LOWER CASE NUMBERS SYMBOLS 0 0 00 0 0 0 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 0 11 STX 22 ETX 33 E[...]

C-1 Appendix C IEEE-488.2 Devise Documentation Requirements Introduct ion Section 4.9 of the IEEE Standard 488.2-1987 states: "All devices shall supply information to the user about how the device has implemented this standard." (In this context, "device" means the Fluke 2620A Hydra Series II Data A cquisition Unit. The Fluke Hy[...]

2620A/2625A Users M anual C-2 Measurement rate: Slow. Scaling (M):1 (all channels) Offset (B): 0 (all channels) Alarm parameters: Limit-1 and Lim it-2 OFF. All limit values 0. Alarm assignments: Channels 0-3 assigned to outputs 0-3,respectively. Channels 4-20 assigned to digital I/O lines 4-7, as shown in Table 3-8. Scan interval time: 0:00:00 (con[...]

Appendices IEEE-488.2 Devise Docum entation Requirements C C-3 <PROGRAM MESSAGE UNIT> <PROGRAM MESSAGE UNIT SEPARATOR> <COMMAN D MESSAGE U NIT> <QUERY MESSAGE UNIT> <COMMAND PROGRAM HEADER> <QUERY PROGRAM HEADER> <PROGRAM DATA> <CHARACTER PROGRAM DATA> <DECIMAL NUMERI C PROGRAM DATA> 7. A descri[...]

2620A/2625A Users M anual C-4 There are no device-to-device messages. 11. The size of any block data responses, Section 8.7.9.4. There are no block data responses. 12. A list of common commands and queries which are implemented, Section 10. *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RST, *SRE, *SRE?, *STB?, *TRG, *TST?, *WAI 13. A description o[...]

Appendices IEEE-488.2 Devise Docum entation Requirements C C-5 22. For each command, a statement describing whether is overlapped or sequential. All commands are sequential; none are overlappe d . 23. For each command, the device documentation shall specify the functional criteria that are met when an operation complete message is generated in resp[...]

2620A/2625A Users M anual C-6[...]

D-1 Appendix D Making Mixed Measurements Introduct ion This appendix augments the discussion of ac signal effects on other channels (cross talk) found in Chapter 5 ("Making Mixed Measurements"). Effects on each measurement function are discussed below. These numbers should only be considered as references. Since cross talk can be introduc[...]

2620A/2625A Users M anual D-2 AC Signal Cross Talk Into a n AC Volt a ge Channel ACV Error Ratio = VACrm s error VACr ms crosstalk Frequency crosstalk () () () ×       Range Ratio (worst case) Ratio (typical) × vH z ×     × vH z ×     × vH z ×     × vH z ×     30.000 V 1.2 ?[...]

Appendices Making M ixed Meas urements D D-3 AC Si gnal Cro sstalk Into a T emperature Ch annel Frequency = 50, 60 Hz TEMPERATURE Error Rat io = °       C e r r o r VACrm s crosstalk () () Types J, K, E, T, N: Worst case Typical 2. 7 × 10 -3 °       C Vrms 5. 0 × 10 -4 °       C Vrms Types [...]

2620A/2625A Users M anual D-4[...]

E-1 Appendix E Binary Upload of Logged Data (LOG_BIN?) (2625A only) Introduct ion The LOG_BIN? <index> query can be used to quickly upload logged data from a 2625A. The response is a single ASCII string, which encodes the raw binary data stored at the specified <index> position. The logged data is also retained in the 2625A. The measure[...]

2620A/2625A Users M anual E-2 /* -* decode(): Decode LOG_BIN? response string into raw byte stream ** ** Decoding is done on multiples of four input bytes: ** ** 543210 543210 543210 543210 (bit number in ASCII bytes) ** +--------+--------+--------+--------+ ** | src[0] | src[1] | src[2] | src[3] | ASCII string input ** +--------+--------+--------+[...]

Appendices Binary Upload of Logged Data (LOG _BIN?) (2625A only) E E-3 The raw data output array contains the information listed below. Note that the number of floating point values is equal to the number of channels in use, plus one. (The totalizer count is always present in the data, and is stored as a floating point number.) • Time stamp (BCD [...]

2620A/2625A Users M anual E-4 The floating point format used is 32-bit with a 1-bit sign, 8-bit exponent, and 24-bit mantissa with the most significant bit hidden under the LSB of the exponent. The number is formatted as shown in Table F-1. Table E-1. Floating Point Format sign 1 bit exponent 8 bits mantissa 23 bits (plus one hidden bit) high byte [...]

Appendices Binary Upload of Logged Data (LOG _BIN?) (2625A only) E E-5 /* Import globals from main program */ extern int timestamp[]; extern int misc[]; extern float values[]; /* -* convert(): Convert a LOG_BIN? array of binary data into useful data ** ** Converts BCD values to integer, raw floating point values into float ** values usable under th[...]

2620A/2625A Users M anual E-6 /* Globals convert() uses for destination */ int timestamp[6]; /* Scan timestamp */ int misc[3]; /* Temperature units, measurement rate, digital I/O */ float values[22]; /* Measurement values */ extern int isnan(); /* Floating point value is NaN (not a number) */ extern int isinf(); /* Floating point value is Inf (infi[...]

F-1 Appendix F RS-232 Cabling Introduct ion This appendix details the RS-232 cabling between the instrument and a PC, instrument controller (Fluke 17XXA series), pri nter, or modem . All connections can be m ade using the Fluke RS-series of cables (see Options and Accessories in Chapter 1). RS-232 cables should not exceed 50 feet (15 meters) althou[...]

2620A/2625A Users M anual F-2 For example, connection to a serial-to-parallel converter (when using a printer with a parallel input) may be as a DTE (cable RS42) or DCE (cable RS40). HYDRA (DTE) (DB-9/MALE) RS43 HYDRA (DTE) (DB-9/MALE) PC (DTE) (DB-9/MALE) RS40 HYDRA (DTE) (DB-9/MALE) PC (DTE) (DB-25/MALE) RS41 (MODEM) HYDRA (DTE) (DB-9/MALE) MODEM[...]

Appendices RS-232 Cabling F F-3 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 DCD Rx Tx DTR GND DSR RTS CTS RI 1 2 3 4 5 6 7 8 9 COM PC DB-9 RS43 CABLE (NULL MODEM) FEMALE MALE PINS KEY DCD – DATA CARRIER DETECT Rx – RECEIVE Tx – TRANSMIT DTR – DATA TERMINAL READY GND – GROUND DSR – DATA SET READY RTS – REQUEST TO SEN[...]

2620A/2625A Users M anual F-4 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI COM PC DB-25 RS40 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT Rx – RECEIVE RTS – REQUEST TO SEND CTS – CLEAR TO SEND DSR – DATA SET READY GND – GROUND DCD – DATA CARRIER DETECT DTR – DATA TERMINAL REA[...]

Appendices RS-232 Cabling F F-5 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI MODEM DB-25 RS41 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT Rx – RECEIVE RTS – REQUEST TO SEND CTS – CLEAR TO SEND DSR – DATA SET READY GND – GROUND DCD – DATA CARRIER DETECT DTR – DATA TERMINAL RE[...]

2620A/2625A Users M anual F-6 Rx Tx DTR GND DSR RTS CTS 1 2 3 4 5 6 7 8 9 RS-232C HYDRA DB-9 Tx Rx RTS CTS DSR GND DCD DTR RI PRINTER DB-25 RS42 CABLE (OR EQUAL) FEMALE MALE PINS KEY Tx – TRANSMIT Rx – RECEIVE RTS – REQUEST TO SEND CTS – CLEAR TO SEND DSR – DATA SET READY GND – GROUND DCD – DATA CARRIER DETECT DTR – DATA TERMINAL RE[...]

Appendices RS-232 Cabling F F-7 DB-9 CONNECTOR CONNECTOR SIDE DB-25 CONNECTOR SOLDER SIDE FEMALE CONNECTOR SIDE SOLDER SIDE MALE CONNECTOR SIDE SOLDER SIDE FEMALE CONNECTOR SIDE SOLDER SIDE MALE 6 1 9 5 7 2 8 4 8 3 7 3 9 4 6 21 5 12 25 2 14 1 13 11 24 3 15 10 23 4 16 9 22 5 17 8 21 6 18 7 20 7 19 6 19 8 20 5 18 9 21 4 17 10 22 3 16 11 23 2 15 12 24[...]

2620A/2625A Users M anual F-8[...]

Hy dra Confi guration Recor d SET-UP NAME _________________________________________ DATE_________________________ SCAN RATE: q Slow TEMPERATURE UNITS q °C q °F q Fast COMMUNICATION I/F q RS-232-C SCAN INTERVAL:_______ :_______: _______ Baud Rate _______________________ OUTPUT: q Printer Parity q Even q Odd q None q Memory Echo q On q Off Mode: q [...]

1 Index —2— 2 - w ire accurac y , A - 6, A - 9 —4— 4-ter m inal resistan ce test, 6-10 —A— AC signal cross talk in a dc voltage channel, D-1 AC signal cross talk into a frequenc y channel, D- 2 AC signal cross talk into an ac voltage channel, D-2 AC signal cross talk into an oh m s channel, D-2 A C signal crosstalk in to a te m perature[...]

2620A/2625A Users M anual 2 Front panel trigger control, 5 -3 —G— General, 3 - 22 General in f or m ation (R S - 232 and IEEE-488), 4- 13 —H— Ho w the in stru m en t processes input , 4 - 13 H y steresis, A -12 —I— IEEE - 488 operating li m itat ions, 4 - 9 I f po w er is in terrupted, 3 - 4 If the configuration is reset, 3-4 I m ple m [...]