Agilent Technologies E4350B manual

OPERATING GUIDE for SOLA R A RRA Y SIMULA TOR A GILENT MODELS E4350B, E4351B A gilent Model E4350B: US37410101 and A bov e * A gilent Model E4351B: US37430101 and A bov e * * For instruments with higher Serial Numbers, a change page may be included. A gilent Part No. 5962-8206 Printed in USA : Microf iche 5962-8207 December, 1997[...]

2 CERTIFICA TION Agilent Technologies Company certifies that this pr oduct met its published specifications at time of shipment from the factory. Agilent Technologies further certifies that its calibration meas urements are traceable to the United States National Bureau of Standards, to the extent allow ed by the Bureau’ s calibration facility, a[...]

3 SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this m anual violates safety standards of design, manufacture, and intended use of the instrum ent. Agilent Technologies Co[...]

4 SAFETY SUMMARY (continued) GENERA L Any LEDs us ed in this produ ct are Clas s 1 LEDs as per IEC 825- l. ENVIRONMENT A L CONDITIONS All i nstru men ts are intended for in door use in an in stallati on category II, pollution deg ree 2 environ ment. They are design ed to operate at a max im um relative hum idity of 95% an d at altitudes of up to 20[...]

5 PRINTING HIST ORY The editio n and current revision of this manual are indicated below. Reprints of this manual containing minor corrections and updates may have the sam e printing da te. Revised editions are identified b y a new p r inting date. A revised edition incorporates all new or corrected material since the prev ious printing date. Ch an[...]

6 Table Of Contents 1 General Information What’s In This Guide? .................................................................................................................................. 13 Safety Considerations ................................................................................................................................[...]

7 Capacitive Loads ..................................................................................................................................... 30 Inductiv e Loads ...................................................................................................................................... 31 Connectin g to an External Voltage Sou [...]

8 Types of SC P I Messages .............................................................................................................................. 51 The Message Un it.................................................................................................................................... 52 Headers.................................[...]

9 Measure Subs ys tem ....................................................................................................................................... 72 MEAS:CUR R? ........................................................................................................................................ 72 MEAS:VOL T? .........................[...]

10 8 . Status Reporting Agilen t SAS Status Structu re................................................................................................... ...................... 87 Operation Status Grou p ................................................................................................................................. 87 Regis ter Fun[...]

11 Entering the Calibration Values ............................................................................................................ 109 Saving the Calibration Constan ts ........................................................................................................... 109 Disabling th e Calibration Mode ........................[...]

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General Information 13 1 General Information What’s In This Guide? This gu ide describes the A gilent Model E4350B/E4351B S o lar Array S im ulator (S AS). A n overview of the u nit is given in this chapter. Installation and user connections are discussed in chapters 2 an d 4. P rogramm ing from the front panel and ov er the GPIB is discussed in [...]

14 General Information Operator Replaceable Parts Table 1-3 O perator Replaceable Parts Description Agilent Part No. Description Agilent Part No . Cover, dc ou tput 0360-2191 Plug , analog connector 1252-3698 Foot, cabin et 5041-8801 Plug , digi tal conn ector 1252-1488 Fuse, pow er 100 Vac line v o ltage, 15 A 120 Vac line v o ltage, 12 A 220/230/[...]

General Information 15 Output Charact eristic The Agi lent E4350B/ E4351B Solar A rray S im ulator can be operated in three m odes: fixed m ode, sim ulator m ode, and table mode. Mode sw itching on the Ag ilent SA S is accomplished ov er the GPIB bus via the SC P I CURRent:MODE com mand. You cannot sw itch modes from the front panel. Note: The Agil[...]

16 General Information I V sc mp oc mp I I VV 120V 130V = E4351B 0 E4351B = 4A 480W MAX = 1 Ω min (E4351B) .25 Ω min (E4350B) V I MAXIMU M VO LT AGE TYPICA L CURV E MAX IMUM CURRENT E4350B = 8A P mp POINTS UNDER DASH ED LI NE ARE IN VALID 60V 65V = E4350B Figure 1-2. Simulator M ode Characteristic Note that under certain cond itio ns, such as i[...]

General Information 17 Front panel operation: You can use the front panel when the unit is operating in Simulator m ode. T o do this, press the Local key w henever the front panel RMT annunc iator is o n. Be aware however, tha t any voltage a nd curre nt values that you ente r fro m the fro nt panel will have no effect on the unit w hile it is in S[...]

18 General Information ■ There is no restrictio n o n the spacing between points in either voltage or current, b ut the points must be monotonic. Voltage values must be sent in increasing order of magnitude; current values must be sent in equal or decreasing o rder of m agnitude. F or an Ag ilent E4350B for ex ampl e: (1,8) (50,7.8) (55,7.5) (56,[...]

Installation 19 2 Installation Inspection Damage When y o u receive y our Agilent SA S, inspect it for any obvious dam age that m ay have occu rred during shipm ent. If th ere is damag e, notify t he sh ipping carri er and the n earest Agilen t Sales an d Support Office i mm ediately. Warran ty inf ormati on is printed in the fro nt of this guide. [...]

20 Installation Rack Mounting The Agilent SAS can be m ounted in a standard l9- inch rack panel or cabinet. Rack mounting k its are available as Option 908 or 909 (with handles). Installation in structions are included w ith each rack m ounting kit. Support rails are required w hen rack-mounting the Agilent SAS (see table 1- 1). Temperature Per for[...]

Installation 21 AC Line Voltage Conversion SHOCK HAZ ARD . Hazardous voltage can rem ain inside the un it even after it has been tu rned off . This procedure s hould on ly be done by qualified el ectronics service pers onnel. Line voltag e conversion is accomplish ed by chang ing w ire and jumper positions on the ac input of th e main power transfo[...]

22 Installation Downloading and Installing the Driver NOTE: Before ins talling th e VXI plug&play instrum ent driver, m ake sure t hat y ou have on e of th e supported applic a tions installed and running o n your computer. 1. Access Agi l e n t T e c h n o lo g i e s ’ W e b s i t e a t h t t p : / / www. a g i le n t . c o m/ fi n d / d r i[...]

Turn-On Checkout 23 3 Turn-On Checkout Introduction Successfu l tests in this ch apter provide a hig h degree of con fidence that the Ag ilent SAS is operating properly . For verifica tion tests, se e app endix B under Ver i fic ation. Do not apply ac pow er to the Agilent SAS unt il told to do so. Note This chapter pr o vides a preliminary introdu[...]

24 Turn-O n Checkout Using The Keypad Shifted Keys Some of the front panel key s perform tw o functions , one labeled in black an d the other in blue. You access th e blue fun ction by f irst pressin g the bl ue key, w hich is not lab eled. When the Shift annunciato r is on, you will know you have access to the key’ s shifted (blue) function. Bac[...]

Turn-On Checkout 25 Table 3-1. Checking the Voltage Functions w ith Output Terminals Open (continued) Procedure Display Explanation Rotate the Voltage control first count erclockw ise and then clockw ise Control ope rates similarly to and key s. The control is rate sensitive. Turning it more quickly causes a m ore rap id change in voltage. Pres s 4[...]

26 Turn-O n Checkout Table 3-2. Checking the Current Functions w ith Output Terminals Shorted (continued) A ction Display Explanation Press VOLT 60.000 Program output to 60 v o lts. Press AMPS 1.000 Program outpu t to 1 am pere. Press AMPS 1. 000 Dis annunciator turns off, CC annunciator tur ns on, and AMPS display show s the prog ramme d current. [...]

Turn-On Checkout 27 Checking The Save And Recall Functions The Save and Recall functions are app licab le to the Agilent SAS in Fixed m o d e only. Note that in Simu lato r or in T able modes, the Save function is ignored, the recall will return the unit to the Fixed mode and reset the parameters to the *RST values (refer to the discussion of *RCL [...]

28 Turn-O n Checkout Table 3-3. Pow er-O n Selftest Errors Error No. Display Failed Test Error No. Display Failed Test El FP RAM Front Panel RAM E8 SEC RAM Secondary RAM E2 FP ROM Front Panel ROM checksu m E9 SEC ROM Secondary R OM checksum E3 EE CHKSUM EEP ROM E10 SEC 5V Secondary 5 V ADC reading E4 PRI XRAM Primary external RA M Ell TEM P Seconda[...]

User Connections 29 4 User Connections Rear Panel Connections Make application load conn ections to the output term inals or bus bars, analog conn ector, and digital connector as show n on the rear-panel draw ing for y our model Agilen t SAS. Make controller conn ections (GPIB and serial link) as sh ow n in Figu re 4-12 at the en d of this ch apter[...]

30 User Connections Digital Connector This connecto r , which is on the rear panel, is for connecting fault/inhibit, d igital I/O, o r relay link signals. The connector accepts wi res sizes from AWG 22 to AWG 12. Pin No. 1 2 3 4 Fault/Inhibit 1 FLT OUTP UT FLT OUTP UT INH INPUT INH COMMON Digital I/O OUT 0 OUT 1 IN/OUT 2 COMMON  Insert Wires ô [...]

User Connections 31 Because of its high output v oltage, the A gilent E4351B g enerates hig h currents w hen discharging the load capacitor und er overvoltage conditio ns. Excessive currents can d amage the unit. The peak discharge curren t is limited by the sum of the external capacitor’ s ESR (equivalent series resistance) and the series resist[...]

32 User Connections of at the load, but with a 3% to 5% increase in voltage at the output terminals. Bundle or tie wrap the load leads to minim ize inductance an d reduce noise pickup. CV Regulation The Fixed mode voltage lo ad regulation sp ecification in ap pendix A applies at the o utput terminals of the Ag ilent SAS. When remote sensing, this s[...]

User Connections 33 Over Current Protection Considerations The front panel overcurrent protection (OCP) is functional only when the Agilent SAS is operating in Fixed m o de . This is because the norm al function of th e OCP circuit, when en abled, is to turn the output of the Agilent SA S off wh enever the unit changes fro m constant voltage oper a[...]

34 User Connections +S -S + - 2 1 + - +240 VDC MAX - - I - IM IP IP + S - S +- - I SAS P A B 3 SENS E Local Remote  Load Conn ection ô Loa d í Analog Connector Set switch f o r local or op tional remote sensing Connect fo r re mote sensing (o ptiona l) Figure 4-5. Multiple Load Connection (Remote Sensing Optional) Connecting Supplies in Parall[...]

User Connections 35 Connecting Supplies in Auto-Parallel Auto- p arallel connections are used on ly if it is required that th e output cu rrents of all paralleled u nits be accurately matche d. Otherw ise you can use straig ht parallel connections as described in th e previous paragraphs. Auto-Pa r a llel Wiring in Simulator and Table M odes Figure[...]

36 User Connections + - - +- IM IM SAS P IM S S +240 VDC MAX - - I 1 + - +240 VDC M AX - - I + - +S - S +I P 2 B A 3 C 5 - IP +- - I I - IM - +- +- - I 6 +- -+ - +-- I +240 VDC MAX - - I +IP 2 B - IP IM IM SAS P IM S S IM IM SAS P I M S S P Slave Slave Maste r 68 200 200 0.1uF . . 2.2uF 4  Analog Connectors ô Slave Supplies (Set the slave o utp[...]

User Connections 37 3. Remove or disable the Agilent SAS OVP crow bar SCR. For fu rther information , contact an A gilent Service Engin eer through your lo cal Agile nt Sa les and Su pport Office. Figure 4-9. Using Series Diodes wit h A uto-Parallel Operat ion Connecting Supplies in Series Only connect units in series that have identical voltage an[...]

38 User Connections Analog Current Control (applies in Fixed mode only) The setup sho wn in Figure 4-11 allows an external dc voltage to p rogram the Agilent SA S o utp ut current in Fixed mode. A voltage applied to the differential current programming input programs the output current. Note that depending o n the polarity of the external source, t[...]

User Connections 39 Note The Agilent SAS is shipped from the factory with its GPIB add ress set to 5. T he Agilent SAS prim ary and secondary addresses can be changed from the front panel as described un d er Changing the GPIB Address in chapter 5. For Agilent SA S GP IB interface capabilities, see appendix A.  ô í ÷ û ø ù From 1 to 15 dir[...]

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Front Panel Operation 41 5 Front Panel Operation Introduction Note Only in Fixed m o de are front panel op e ratio ns fully functional. The Agilent SAS can be operated as a standard dc so urce in Fixed mode. SAS functions are available w hen the unit is set to Simu lator or T able mode. You cannot sw itch m odes from the front panel. Modes can only[...]

42 Front Panel Operation Table 5-1. Front Panel Controls and Indicators (See Figure 5-1) Control or Indicator Function or Indication  Display VOLTS Shows present output voltage o f the Agilent SAS. AMPS Shows present output current o f the Agilent SA S. Status Annunciat ors CV The Agilent SAS is in constant-voltage m ode. (Applies in Fixed mode [...]

Front Panel Operation 43 Table 5-1. Front Panel Controls and Indicators (continued) ÷ Function Keys Press to enable or disable the Agilen t SAS outpu t. This key tog gles betw een the two states. The disabled state programs the output to the *RST voltage and current se ttings. Note T o prevent curren t oversh oots, do not u se the Output On Off k [...]

44 Front Panel Operation Programming the Output Important These instructions sho w how to program a single Ag ilent SAS from the f ront panel. T hese instructions apply primarily when the unit is set to operate in Fixed mode. For example, any voltage and current values that you enter from the front panel will have no eff ect o n the unit w hile it [...]

Front Panel Operation 45 Programming Curr ent You may program the Ag ilent SAS current w itho ut a load , but must have a load in order to draw output current. These tests assum e you have the load con nected in accordance w ith the inf o rmation in chapter 4 - User Connections and Considerations . If y o u do not have a load on the A gilent SAS, y[...]

46 Front Panel Operation Clearing The OVP Condition With the OVP tripp ed, return to the meter mode and try to clear the condition by pressing . Nothing will appear to happen because the OV trip voltage is still below th e programm ed o utput voltage. Thus, as soon as the circu it is cleared , it trips again. You can clear the OV cond itio n by: ?[...]

Front Panel Operation 47 CV Mode VS. CC Mode Once you pr ogram a vo lta ge (V SE T ) and a current (I SET ), the Agilent SAS w ill maintain itself in either CV or CC m o de, depending on the resistance of the load (R L ). If the load demands less current than I SET , operatio n will be in CV m o de with the voltage maintained at V SET . T he output[...]

48 Front Panel Operation 3. T urn o ff the Agilent SAS. 4. Hold in the key and turn the Ag ilent SA S back on. The display indicates RCL 0 PWR-ON to verify that the A gilent SAS has configured its turn-on state to that stored in lo cation 0. 5. From now on the unit w ill always turn on to the state defined in location 0. Whenever you w ish, you can[...]

Remote Programming 49 6 Remote Programming GPIB Capabilities of the Agilent SAS All A gilent S AS f unctions except f or settin g the GPIB address are program mable ov er the IEEE 488 bu s (also k now n as the General Purpose Interf ace B us or "GPIB" ). The IEEE 488.1 capabilities of the A gilent SA S are listed in the Supplem ental Char[...]

50 Remote Programming Types of SCPI Commands SCPI h as tw o types of com mands , com mon and subsy stem . ■ Common comm ands (see table 7-1) generally are not related to sp ecific op eratio n but to controlling o verall Agilent SAS functions, such as reset, status, and synchronization. All com mon commands consist of a three-letter m nemonic prec[...]

Remote Programming 51 Moving Among Subsystems In order to co mbine comm ands from different subsystem s, you need to be able to restore the active path to the ro ot. You do this w ith the root specifier (:). For exam ple, you could clear the ou tput protection and check th e status of the Operation Condition register as follo ws: OUTPUT:PROTECTION:[...]

52 Remote Programming The following figure illustrates the SCPI message structure: Figure 6-2. Command Message Structure The Message Unit The simplest SCPI com man d is a single m essage unit consistin g of a com mand header (or k eyw ord) followed by a message termin ator. The message u nit may include a param eter after the header. The parameter [...]

Remote Programming 53 SCPI Data Formats All data programm e d to or returned fro m the unit is ASCII. The data may be numerical or charact er string. Numerical Data Table 2-1. Numerical Data Formats Symbol Data For m Talking Formats <NR1> Digits with an im plied d ecimal point assumed at the right of the least-significant digit. Examples: 273[...]

54 Remote Programming Examples Most examples given here are generic, without regard to the programming language or ty pe of GPIB inter face. Because SCPI c o mmands are sent a s ASCI I outp ut strings within the pro gramming language statements, the SCP I syntax is independ ent o f both pro gramm ing language and interface. The examples are followe[...]

Remote Programming 55 The following example illustrates auto-parallel operation in T able mode. 1000 ! 2 Units in auto-parallel - Table Mode 1010 OUTPUT 705;”*RST” Resets the master unit. 1020 OUTPUT 706;”*RST” Resets the slave unit. 1030 OUTPUT 705;”MEM:TABL:SE L TABLE1” Selects a table for entering data f or master uni t 1040 OUTPUT 7[...]

56 Remote Programming Writing to the Display You can include messages to the front panel LCD in your programs. The description o f DISP:T EXT in chap ter 7 shows the number and types of perm itted display characters. In order to write to the display, you m ust first change it to text m ode as show n in the follow ing exam ple: DIS:MODE T EXT Switch[...]

Remote Programming 57 Assigning the GPIB Address In Programs The Agilent SAS address cannot be set remotely; it mu st be set from the front panel. Once the address is set, you can assign it inside programs. Refer to chapter 5 under “Setting the GPIB Address” for more information. The following exam p le assumes that the GPIB select code is 7 , [...]

58 Remote Programming SAMPLE PROGRAM FOR A gilent SA S USING T HE AGILENT BASIC PROGRAMMING LA NGUAGE 10!RE-STORE"SAS_DEMO" 20 ! 30 ! This example program demonstrates how to: 40 ! 1) use the Agilent SAS in Fixed Mode 50 ! 2) use the Agilent SAS in Simulator Mode 60 ! 3) use the Agilent SAS in Table Mode 70 ! This program assumes the Agil[...]

Remote Programming 59 570 ! delete table T1 580 Display_msg("DELETING T1") 590 Output_off 600 OUTPUT 705;"CURR:MODE FIX" ! exit Table mode 610 OUTPUT 705;"CURR:TABL:NAME " ! de-activate active table (T1) 620 ! space required after :NAME 630 OUTPUT 705;"MEM:TABL:SEL " ! de-select working table (T1) 640 ! space[...]

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Language Dictionary 61 7 Language Dictionary Introduction This secti on giv es the sy ntax and param eters for all th e IEEE 488.2 SCPI comm ands and the C omm on comm ands used by the Agilent SA S. It is assumed that y o u are familiar w ith the material in chapter 6 - Remote Programm ing. T hat chapter explains th e terms, sy mbols, and sy ntacti[...]

62 Language Dictionary Description Of Common Commands Table 7-1 show s the com mon comm ands and queries. These comm ands are listed alphabetically in the dictionary. If a comm and has a corresponding qu ery that sim ply return s the data or status specified by the comm and, then both comm and and query are included under the ex planation for the c[...]

Language Dictionary 63 If PSC is program med to 0 , the *E SE register bits are stored in nonvolatile memory . T he nonvolatile mem ory has a finite m aximum number of write cycles (see Supplem ental Characteristics in appendix A). Programs th at rep eatedly w rite to nonvolatile mem ory can ev entually exceed the maxim um num ber of write cy cles [...]

64 Language Dictionary *OPC Meaning and T ype Operation Co mplete Device Status Description This comm and causes the interface to set the OPC bit (bit 0) of th e Standard Event Statu s register w hen the Agilen t SAS has completed all pending o p erations. (See *ESE for the bit con figu ration of the Stan dard Event Status register.) Pending operat[...]

Language Dictionary 65 *PSC Meaning and T ype Power-on St atus Cl ear Device Initialization Description This comm and controls the autom atic clearing at power tu rn-on of the Service Request Enable regi ster and the Standard Event Status Enable register. The setting o f the *PSC command is stored in non-volatile memory . If the com mand param eter[...]

66 Language Dictionary Com m and Syntax *RCL <NRf> Param eters 0 | 1 | 2 | 3 Example *RCL 3 Query Synta x (None) Related Comm a nds * P SC * RST *SAV *RST Meaning and T ype Reset Device State Description This comm and resets the Agilent SAS to a factory -defined state as def ined below . *RST also f o rces an ABORt c o mma nd . If Sim ulator [...]

Language Dictionary 67 The Agilent SAS uses nonvolatile mem ory for recording register states. Pro grams that repeatedly use *SAV for recalling states cau se frequen t w rite cycles to th e mem ory and can ev entually exceed the max im um num ber of write cy cles and may cause the mem ory to fail (see Supplem ental Characteristics in appendix A). C[...]

68 Language Dictionary Bit Configuration of Status Byte Register Bit Position 7 6 5 4 3 2 1 0 Condition OP ER MSS 1 ESB MAV QUES 2 2 2 (RQS) Bit Weigh t 128 64 32 16 8 4 2 1 ESB = Event statu s byte sum mary; MA V = Message available; MSS = Master statu s summ ary; OPER = Operation status sum mary; QUES = Qu estionable status summ ary; RQS = Reques[...]

Language Dictionary 69 Description Of Subsy stem Commands Table 7-2 is a tree di agram of the subs ystem comm ands. C omm ands foll owe d by a qu estion ma rk (?) take on ly the qu ery form . Except as noted in th e syn tax descriptions , all other com man d s take both the com mand and qu ery form. The comm ands are listed in alphabetical order an[...]

70 Language Dictionary Table 7-2. Subsystem Commands Sy ntax (continued) [SOURce:] CURRent [:LEVel] [:IMMediate][:AMPLitude]< NRf+ > Sets the outpu t current lev el :TRIGgered [:AMPLitude] < NRf+ > Sets the triggered output current level :MODE <mode> Sets the operating mode (FIX | SA S | TABL) :PROTection [:LEVel] < NRf+ > S[...]

Language Dictionary 71 Table 7-3. Agilent S A S Programming Parameters (in Fixed Mode) Parameter A gilent E4350B Agilent E4351B CURR[:LEV] MAX and 8.16 A 4.08 A CURR[:LEV]:TRIG MAX 8.16 A 4.08 A CURR:PROT[:LEV]: MAX 10 A 5 A (P r ogr amming range is 0 to M AX) *RST C urrent Valu e 0.096 A 0.048 A *RST Cu rrent Protect Value MAX f or both m odels OU[...]

72 Language Dictionary DISP:T EXT Sends character strings to the display wh en the display m ode is TEXT . The LCD display h as the follow ing character set: LCD Character Set uppercase letters A through Z (Case -se nsitive entry) digits 0 thro ugh 9 punctuation _ | “ $ < > + - / = ? . : , blank space A display is capable of showin g up to [...]

Language Dictionary 73 Memory Subsystem This subsystem m anages the instrument’s data table memory . ME M:C OP Y: TA BL This comm and copies the table that w as selected with MEM:TABL :SEL to non- volatile m emory . You can us e the same nam e or a differen t name. Nam es cannot be long er than 12 alphanum eric characters and mu st start with an [...]

74 Language Dictionary MEM :T A BL:CURR:POIN? ME M:TA BL :VO LT: PO IN ? These comm ands return the nu mber of current or voltage points in th e active table. Query Syntax MEMory:TABLe:CURRent[:M AGnitude]:POINts? MEMo ry:TABLe:VOL Tage[:MAGnitud e]:POINts? Returned Param eters <NRI> (n um ber of points) Exam ples M EM :TABL:CURR:POIN? MEM :T[...]

Language Dictionary 75 OU TP: PROT: DEL This comm and o nly applies in Fixed mode. It sets the tim e in seconds between the program ming of an output chang e that prod uces a CV, CC, or UNREG condition and the recording o f that cond ition by the Status Operation Cond ition register. The delay preven ts the momen tary changes in Agilent SAS statu s[...]

76 Language Dictionary [SOUR:]CURRent:MODE This comm and selects the operating m ode of the Agilent SAS. The choices are: FIXed In Fixed mode, the o utput is a fixed recta ngular I-V c ha r acter istic . T he o utput cap acitance is < 100 nF on the A gilent E4350B and <50 n F on the Ag ilent E4351B, w hich optim izes the un it as a constan t [...]

Language Dictionary 77 [SOUR:]CURR:SA S:ISC This command sets the short-circuit current for the Sim ulator mode. If you are programm ing a slave unit that is p a ralleled to a master u nit, y o u m ust set Isc and Im p to zero (0). T his config ures the un it to act as a slave. Comm and Sy nt a x [SOURce]:CURRent:SASim ulator:ISC <NRf> Param [...]

78 Language Dictionary Bit position 2 normally serves as an output. To change it to an input, it must f irst b e programmed high. The DIG:DATA? query returns the l ast programm ed value in bits 0 and 1 and th e value read at pin 3 i n bit 2. The bits are tu rned on an d off in straight bi na ry code as follo ws: Digital I/O Port Programming Char t [...]

Language Dictionary 79 [SOUR:]VOLT:PROT This comm and sets the overvoltage protection (OVP) level of the Agilent SA S. If the output voltage ex ceeds the OVP level, then the Agilent SAS output is disabled and the Questionab le Co ndition status register OV bit is set (see chap ter 8 for more inform atio n). An overvoltage conditio n can be cleared [...]

80 Language Dictionary [SOUR:]VOLT:TABL:OFFS This com mand adds a v oltage of fset w hen operating in tabl e mode. Comm and Sy nt a x [SOURce]:VOLTage:T ABLe:OFFSet <NRf> Param eter 0 to VMAX *RST Value 0 Examples VOLT:TABL:O FFSet 4 Query Synt ax VO LT: TABL:OF F S? Returned Param eters <NRI> Status Subsy s tem This sub s ystem pro gra[...]

Language Dictionary 81 STAT:OPER:ENAB This comm and and its query set an d read the value of the Operational En able register. This register is a mask f or enabling specific bits from the Operation Event register to set the operation summary b it (OPER) of the Status Byte register. This bit (bit 7) is the logical OR of all the Operational Event reg[...]

82 Language Dictionary Status Questionable Regist ers Bit Configuration of Questionable Registers Bit Position 15-11 10 9 8 7 6 5 4 3 2 1 0 Condition NU UNR RI NU NU NU NU OT NU NU OC OV Bit Weight 1024 512 256 128 64 32 16 8 4 2 1 NU = (Not used); OC = Ov ercurrent protection circuit (OCP) or h ardw are overcurren t level (OC) h as tripped. OT = O[...]

Language Dictionary 83 STA T:QUES NTR/PTR Commands These commands allow y ou to set or read the value o f the Questionable NT R (Negative-T ransition) and P TR (P ositive- Transitio n) registers. T hese registers serve as polarity filters between the Questionable Enable and Questionable Event registers to cause the following actions: l When a bit i[...]

84 Language Dictionary SYST :VERS? This query returns the SCPI version number to which the A gilent SAS complies. The returned value is of the form YYYY.V, wh ere YYYY represents the year and V is the revision num ber for that year. Query Synta x SYSTem :VERSio n? Param eters (none) Returned Param eters <NR2> Examples SYST:VERS? SYST EM:VERSI[...]

Language Dictionary 85 TRI G When the trigger subsystem is enab led , TRIG generates a trigger signal. The trigger w ill then: 1. Initiate a pending level change as specified by CURR[:LEV]:TRIG or VOLT[:LEV] :TRIG. 2. Clear the WTG bit in the Status Op eratio n Condition register. 3. If INIT:CONT has be en given, the tr igger sub s ystem is imm edi[...]

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Status Reporting 87 8 Status Reporting Agilent SAS Status Struct ure Figure 8-1 sh ows the status reg ister structure of the Ag ilent SAS. The Standard Event, Statu s Byte, an d Service Request Enable registers an d the Output Queue perf orm stan dard GPIB functions as defined in the IEEE 488.2 Standard Di gital Interface for Programm able Instrum [...]

88 Status Reporting Table 8-2. Bit Configurations of Status Registers Bit Signal Meaning Bit Signal Meaning Operation S tatus G roup Standard Ev ent Stat us Gro up 0 CAL The interface is com puting new calibration constants. 0 OPC Operation complete. 5 WTG The interface is waitin g for a trigger. 2 QYE Query error. 8 CV The power module is in const[...]

Status Reporting 89 Questionable Status Group Register Functions The Questionable Status registers record sig nals that indicate abnormal operation of the A gilent SA S. As show n in Figure 8-1, the g roup consists of the sam e type of registers as the Statu s Operation group. The outputs of the Questionable Statu s group are logically-ORed into th[...]

90 Status Reporting The RQS Bit Whenever the Agilent SAS requests service, it sets the SRQ interrupt line true and latches RQS into bit 6 of the Status Byte register. When the controller services the interrupt, RQS is cleared insid e the register and returned in bit p osition 6 of the response. The remain ing bits of the Status By te register are n[...]

Status Reporting 91 The PON (Power-On) Bit The PON bit in the Standard Event regi ster is set wh enever the Agilent SAS is turned on . T he most com mon use for PON is to generate an SR Q at power on follow ing an un expected loss of pow er. T o do this, bit 7 of the Stan dard Event Enable register must be set so that a power- o n event registers i[...]

92 Status Reporting Now w hen there is a serv ice request, read back both th e operational and the questionable ev ent registers. STAT: OPER:EVEN?; QUES:EVEN? Monitoring Both Phases of a Stat us Transition You can monitor a status signal for both its po sitive and negative transitions. For example, to generate RQS when the Agilent SAS either enters[...]

Status Reporting 93 RI (Remote Inhibit) Whenever a rem o te inhibit signal is received at the dig ital port (see appendix C - Dig ital P ort Functions), the A gilent SAS will receiv e an RI event at the Questionable Status reg ister. By program min g the status subsys tem, y ou may u se RI to generate a service request (SRQ) to the controller and/o[...]

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Specifications and A pplication Information 95 A Specifications and Application Information Specifications and Supplemental Characteristics Perform ance specifications are warranted ov er a temperature range of 0 to 40 ° C unless specified otherw ise. Unless otherw ise noted, speci ficati ons apply to Fixed, Sim ulator, and Table m odes. Supplemen[...]

96 Specifications and A pplication Information Table A-2. Supplemental Characteristics for A gilent E4350B/E4351B SAS Parameter A gilent E4350B A g ilent E4351B Output Progra mm ing Range (m axim um progra mma ble va lues) Simul ator/T able Voltage 0 - 65 V 0 - 130 V Fixe d mode Vol tage: 0 - 61.5 V 0 - 123 V Curren t: 0 - 8.16 A 0 - 4.08 A Overvol[...]

Specifications and A pplication Information 97 Table A-2. Supplemental Characteristics for A gilent E4350B/E4351B SA S (continued) Parameter Both Models AC Line Voltage Ratings (selectable via internal switc hing 100, 120, 220, 240 Vac: -13%, +6 % - see Appendix B) 230 Vac 1 : - 10%, +10% Freq ue ncy Range: 47-6 3 Hz Ma ximum Input Pow e r 1380 VA;[...]

98 Specifications and A pplication Information Table A-2. Supplemental Characteristics for A gilent E4350B/E4351B SA S (continued) INH/FLT Characteristics Maxim um ratings: FL T Term in als (1 & 2 ): INH Terminals (3 & 4): 16.5 Vdc betw een termin als 1 & 2; 3 & 4; and from 1 or 2 to chassis ground Low-level output cur rent = 1 .25 [...]

Specifications and A pplication Information 99 Output Impedance Graphs Simulator Mode The fo llowing six output imped ance gr aphs were ge ne rated at thre e po ints on bo th Agilent SAS mode ls while op erating in simulator m od e with the ref erence settings indicated belo w. The reference curve shows the location of the three sample points on w [...]

100 Specifications and A pplication Information Agilent E 4350B Test Point #3 Voltag e: 40.75 V Curren t: 7.9 A dc Resis tance: 200 Ω Impedan ce in ohms 0 -45 -90 -13 5 -18 0 160 80 40 20 20 320 Freque ncy in Hertz Phase in degrees Agilent E 4351B Test Point #1 Voltag e: 128.8 V Curren t: 0.5 A dc Resis tance: 2.48 Ω Impedan ce in ohms 5 0 4 0 [...]

Specifications and A pplication Information 101 Agilent E 4351B Test Point #3 Voltage: 81.5 V Curren t: 3.95 A dc Resis tance: 800 Ω Impedan ce in ohms 3.2K 1.6K 0 -45 -90 20 0.8K 0.4K 0.2K 0.1K Freque ncy in Hertz Phase in degrees Fixed Mode The fo llowing four o utput impeda nc e grap hs were gener ated while bo th Agilent SAS models where o pe[...]

102 Specifications and A pplication Information Agilent E 4350B Constant Vo lt a ge Operation Voltage: 50 V Curren t: 1.0 A Impedan ce in ohms 90 45 0 8 4 2 1 .5 .25 .125 32 16 Freque ncy in Hertz Phase in degrees Agilent E 4351B Constant Vo lt a ge Operation Voltag e: 100 V Curren t: 0.95 A Impedan ce in ohms 90 45 0 32 16 .25 .125 8 4 2 1 .5 Freq[...]

Specifications and A pplication Information 103 Voc Vm p Imp Isc Pm p Ag ilent E4350B 65V 60V 7.5A 8A 450W Ag ilent E4351B 130V 120V 3.75A 4A 450W 0 100 200 300 400 500 600 700 800 90 0 1000 - 5 - 3 - 1 0 -2 - 4 - 6 -7 - 8 - 9 -1 0 V-I Sweep Frequency i n Hertz Power Error as a Percent of 450W Pmp At -15% of Peak P ower At -10% of Peak P ower At -5[...]

104 Specifications and A pplication Information Series Switching Regulation In this application, reg ulation across the load can be achiev ed by con trolling th e duty cycle of a series FET, which can be operated at frequ encies as hi gh as 50kHz. A proprietary non-diss ipative clam p circuit mi nim izes output v oltage oversh oots wh en the output[...]

Verification and Calibration 105 B Verification and Calibration Introduction This appendix includes ve rificat ion and cal ibration procedu res for the Ag ilent E4350B and E4351B SA S. Instruct ions are given for performin g the procedures either from the front pan el or from a controller over the GPIB. The verification pro cedures do no t check al[...]

106 Verification and Calibration Verification General Measurement Techniques Figure B-1 sh ows th e setup for the tests. Be certain to use load leads of su fficient w ire gauge to carry the output current (se e Table 4-1). To avoid noise pickup, use coaxial cable or sh ielded pairs for the test leads. Programming the Agilent SAS Table 7-3 in chapte[...]

Verification and Calibration 107 Current Programming and Readback Accuracy This test verifies that th e current programm ing and readback are with in specification. Connect th e appropriate current monitorin g resistor (see T able B -1) as show n in Figure B-1(2). The accuracy of the resistor mu st be as specified in the table. Table B-3. Current P[...]

108 Verification and Calibration Table B-4. Operation Verification Test Parameters (continued) Test Description Minimum Spec Results * M aximum Spec M easurement Uncertainty MODEL Agilent E4351B Voltage Programm ing and Readb ack Low Voltage (0 V) -20 m V V DVM = ______ m V +20 mV 2.0 µ V Front Panel Display Readback V DVM -84 m V V FP = ______ mV[...]

Verification and Calibration 109 Front Panel Calibration Eight shifted keys and the Entry keypad are used for calibratio n functions (see chapter 5 - Front Panel Operatio n for explanations of shif ted keys and the En try key pad). The followin g procedures assume y ou understand how to operate front panel ke ys. Entering the Calibr ation Values Fo[...]

110 Verification and Calibration Table B-5. Typical Front Panel Calibration Pr ocedure (continued) A ction Display Response 4. Select the second calibration poin t by pressin g again. 5. Read the DVM and u se the Entry key pad to enter the second voltage v alue. Note: If one of the en tered values is not with in acceptable range, an error occurs. T[...]

Verification and Calibration 111 Recovering From Calibration Problems You can encou nter serious calibration problem s if y ou cannot determ ine a calibration password th at has been changed or th e Agilent SA S is severely out of calibration. There are jumpers inside the Agilent SA S that permit the calibration password to be defeated and allow th[...]

112 Verification and Calibration Calibration Language Dictionary The calibration comm ands are listed in alphabetical order. The form at for each comm and follows th at show n in chapter 7 - Language Di c tionar y. Calib ratio n err o r messages that c an occ ur duri ng G PIB calib ratio n are sho wn in Tabl e B-6. CAL:CURR This comm and is used to[...]

Verification and Calibration 113 CAL:STAT This command enables and disables the calibration mode. T he calibration mode must be enabled before the Agilent SAS will accept an y other calibration com mands. The first parameter specifies th e enabled or disabled state. T he second parameter is the password. It is required if the calibration mode is b [...]

114 Verification and Calibration Agilent BASIC Calibration Program The fo llowing pro gram can be r un on any contr o ller o per ating under Agilent BASIC. T he a ssumed Agilent SAS ad d ress is 5 and calibrati on passw ord is 4350. If requ ired, change th ese param eters in the appropri ate stat emen ts. 10 ! A gilent BASIC Calibration Pro gram 20[...]

Verification and Calibration 115 540 Password is optio nal - only required if set to non-zero value 550 Default passw ord is fou r-dig it m odel number 560 ! 570 OUTPUT @P s;"C AL :STAT E ON, 4350" 58 0 OUTP U T @P s; "VO LT:LEV 2 " 590 ! Ref er to Table A -1 for corre ct shunt value f or model being calibrated 600 ! 610 INP UT [...]

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Digital Port Functions 117 C Digital Port Functions Digital Connector A 4- pin conn ector and a quick- disconnect m ating plu g are provided for dig ital in put and outpu t sig nals (s ee Figure C- l for wi ring conn ections and appendix A f or electrical characteristics). T his digital port can be con figu red to provide either Fault/Inhibit or Di[...]

118 Digital Port Functions GPIB Figure C-2. Example of Inhibit Input In Figure C-3A, the FLT output is connected to a relay driver circuit that energizes a relay w henever a fault conditio n occurs in the pow er supply. The relay can be used to ph ysically discon nect the outpu t of the power su pply from the load. The FLT output is generated by th[...]

Digital Port Functions 119 Figure C-4. Digital Port Configuration Jumper Changing The Port Configuration As shipped fro m the factor y , the d igital port is co nfigured for FL T /INH operation. Yo u can change the co nfiguration of the port to o p erate as a general-purpose digital input/output po rt to contro l y o ur custo m circuitr y as sho w [...]

120 Digital Port Functions OUT 0 (pin 1) This port can only be us ed as an open-coll ector outpu t. It is as sign ed a bit weig ht of 1. OUT 1 (pin 2) This port can only be us ed as an open-coll ector outpu t. It is as sign ed a bit weig ht of 2. IN/OUT 2 (pin 3) This port can be prog ramme d to be either a h igh im pedance input or an open-col lec[...]

Error Messages 121 D Error Messages Hardware Error Messages Front panel error messages resulting from self test errors or runtime failures are described in chapter 3 - T urn-On Checkout. Calibration Error Messages Front panel error messages resulting from calibration errors are described in ap p endix B. System Error Messages System error messages [...]

122 Error Messages Table D-1. Summary of System Error Messages (continued) Error Number Error String [Description/Explanation/Examples] -141 Inv alid character data [bad character, or u nrecogn ized] -144 Character data too lon g [m axim um length is 12 characters] -148 Character data not allowed [character data not accepted w here positioned] -150[...]

Index 123 Index A <AA RD>, 53, 63, 64 air clearance, 20 air fan, 23 analog port characteristics, 29 connec tor configur ation, 29 sign als, 29 program ming , 29 annunciato r s, 42 Addr, 23, 42 CC, 32, 42 CV, 24, 42 Cal, 42, 109 Dis, 23, 27, 42 Err, 18, 42 OCP, 26, 42, 47 Prot , 25, 27, 42, 46 Rm t, 42 Shift, 25, 42 SRQ, 42 Unr, 42, 48 autopar[...]

124 Index calibration , 111, 122 hardw are, 121 runti me, 28, 121 selftest , 28, 121 sy stem , 121 error queue, 83, 90 exhau st fan, 19, 20, 23 external cu rrent cont rol, 37 ESB bit (see status bit) ESD puls e, 20 EXE bit (see status bit) F factory -default state (see * RST state) Fixed mode, 17 restrictions, 18 FLT out put, 30, 92, 98, 117 front [...]

Index 125 L LED (see f ront panel LEDs) line cord, 19, 20 line fuse (see f use) linked co nnectio ns, 37 local vo ltage se nsing, 31 load capacitive (see capacitive load) inductive (see inductive load) load w ire, 29 M ma xim um pow er, 16, 17 measu rement su bsystem, 72 mem ory (table) subs ystem, 73 mes sage, error (see error m essag es) met er m[...]

126 Index respo nse message, 51 resistor, cu rrent m onitoring, 105 RI description , 93, 98, 117 connector, 30, 117, 118 root specifier, 52 RQS bit (see status bit) *R ST state, 66, 90 RST P OWER-ON, 4 8 S safety class, 13 safety compliance, 98 safety cover, ac input, 14 safe ty w arning, 13, 20, 21, 29, 30, 36, 65, 105 saved param eters, 66 savin [...]

Index 127 standard ev ent, 56, 62, 80, 87, 89 status bit CAL , 76, 88 CC, 76, 88 CME, 63, 88 CV, 76, 88 DDE, 63, 88 ESB, 63, 68, 88, 91 EXE, 63, 88 MAV, 63, 68, 88, 90 MSS, 67, 88, 90 OC, 71, 74, 77, 88, 92 OPC, 63, 88, 93 OPER, 68, 88, 92 OT, 74, 77, 88, 9 OV, 77, 83, 88 PON, 63, 88, 91, 108 PSC, 64, 65, 68, 89, 91 QUES, 68, 88 QYE, 63, 77, 88 RI,[...]

A gilent Sales and Support Offices For more inform ation, call your local Agilent sales off ice listed in your telephone directory or an Agilent regional off ice listed bel ow for location of your n earest sal es/su pport office. United States of Am erica: Europe: Agilent T e chnolo gies Company Agilent T echno lo gies Test and Measuremen t Organiz[...]

Manual Updates T he follo w ing updates have b een m a d e to this m anual since the pr int revisio n indicated on the title pa ge. 3/01/00 A ll references to HP have been changed to A gilent. A ll references to HP-IB hav e been chang ed to GP IB. Infor m ation about installing VXI plug & play instrument drivers has been added to page 21.[...]