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OPERATING & PROGRAMMING GUIDE Agilent Model E4356A Telecommunications DC Power Supply Agilent Part No. 5964-8166 Microfiche No. 5964-8167 Printed in USA: August 1999.
2 CERTIFICATION Agilent Technologies Company certifies that this product met its published specifications at time of shipment from the factory. Agilent Technologies further certifies that its calibrat.
3 Safety Summary The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to com ply with these precautions or with specific warnings elsewhere in this m anual violates safety standards of design, manufacture, and intended use of the instrument.
4 Safety Symbol - Definitions Symbol Description Symbol Description Direct current Terminal for Line conductor on permanently installed equipment Alternating current Caution, risk of electric shock Bo.
5 Declaration Page Printing History The edition and current revision of this manual are indicated below. Reprints of this manual containing minor corrections and updates may have the same printing date. Revised editions are identified by a new printing date.
6 Table of Contents Safety Summary 3 Safety Symbol - Definitions 4 Acoustic Noise Information 4 Declaration Page 5 Printing History 5 Table of Contents 6 1 - GENERAL INFORMATION 13 Introduction 13 Saf.
7 Power-On Error Messages 25 Checksum Errors. 26 Runtime Error Messages 26 4 - USER CONNECTIONS 27 Rear Panel Connections 27 Load Wire Selection 27 Analog Connector 27 Connecting the Power supply to t.
8 Introduction To SCPI 46 Conventions 46 Types of SCPI Commands 46 Traversing the Command Tree 47 Active Header Path 47 The Effect of Optional Headers 47 Moving Among Subsystems 48 Including Common Co.
9 *SAV 69 *SRE 70 *STB? 70 *TRG 71 *TST? 71 *WAI 71 Description Of Subsystem Commands 72 ABOR 72 Calibration Commands 72 Current Subsystem 73 CURR CURR:TRIG 73 CURR:PROT:STAT 73 Digital Subsystem 74 D.
10 Register Commands 87 Questionable Status Group 89 Register Functions 89 Register Commands 89 Standard Event Status Group 89 Register Functions 89 Register Commands 89 Status Byte Register 90 The MS.
11 Test Equipment Required 105 List of Equipment 105 Current Monitoring Resistor 105 Performing The Tests 106 General Measurement Techniques 106 Programming the Power supply 106 Order of Tests 106 Tur.
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General Information 13 1 General Information Introduction The following Getting Started Map will help you find the information you need to complete the specific task that you want to accomplish. Refer to the table of contents or index of each guide for a complete list of the information contained within.
General Information 14 Options Table 1-2. List of Options Option Description Standard Input power 230 Vac, nominal 200 Input power 200 Vac, nominal 831 Power cord, 12 AWG, UL listed, CSA certified, wi.
General Information 15 Description The Agilent E4356A is a unipolar, GPIB programmable power supply, which is programmable locally from the front panel or remotely via a rear-panel analog control port. Operational features include: ■ Constant voltage (CV) or constant current (CC) output over the rated output range.
General Information 16 Output Characteristic The power supply can operate in either CV (constant voltage) or CC (constant current) over its output voltage and current ratings (see Figure 1-l). Although the power supply can operate in either mode, it is designed as a constant voltage source.
Installation 17 2 Installation Inspection Damage When you receive your power supply, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and the nearest Agilent Sales and Support Office immediately.
Installation 18 Location and Temperature Bench Operation The Table A-2 in Appendix A gives the dimensions of your power supply. The cabinet has plastic feet that are shaped to ensure self-alignment when stacked with other Agilent System II cabinets. The feet may be removed for rack mounting.
Installation 19 The power cord supplied with power supply may or may not include a power plug (see "Options" in Chapter l) at one end of the cord. Terminating connections and a ground lug are attached to the other end of the cord. See Figure 2 -2 and proceed as follows: 1.
Installation 20 VXI plug&play Power Products Instrument Drivers VXI plug&play Power Products instrument drivers for Microsoft Windows 95 and Windows NT are now available on the Web at http://www.agilent.com/find/drivers. These instrument drivers provide a high-level programming interface to your Agilent Power Products instrument.
Turn-On Checkout 21 3 Turn-On Checkout Introduction Note This chapter provides a preliminary introduction to the power supply front panel. See Chapter 5 - "Front Panel" for more details. Successful tests in this chapter provide a high degree of confidence that the power supply is operating properly.
Turn-On Checkout 22 Using the Keypad Shifted Keys Some of the front panel keys perform two functions, one labeled in black and the other in blue. You access the blue function by first pressing the blue key, which is not labeled. When the Shift annunciator is on, you will know you have access to the key’s shifted (blue) function.
Turn-On Checkout 23 Press OV 30 Program the OVP to 30 volts, which is less than the output voltage. Press 0.000 OVP voltage entered is less than the output voltage. This causes the OVP circuit to trip. The output drops to zero, CV turns off, and Prot turns on.
Turn-On Checkout 24 Press Dis annunciator turns on. Press You have disabled the overcurrent protection circuit. The OCP annunciator turns off. Press ( )** You have cleared the overcurrent protection circuit. The Prot annunciator turns off. Press Dis turns off and CC turns on.
Turn-On Checkout 25 The line fuse is located inside the power supply. To change it, proceed as follows: l. Turn off the front panel power switch and unplug the line cord from the power source. 2. Remove the power supply dustcover as follows: a. Remove the four screws securing the carrying straps and dustcover.
Turn-On Checkout 26 Table 3-3. Power-On 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.
User Connections 27 4 User Connections Rear Panel Connections Make application load connections to the output terminals or bus bars, analog connector, and digital connector as shown on the rear-panel drawing for your model power supply. Make controller connections (GPIB and serial link) as shown in Figure 4-6 at the end of this chapter.
User Connections 28 Note It is good engineering practice to twist and shield all signal wires to and from the analog and digital connectors Digital Connector This connector, which is on the rear panel, is for connecting fault/inhibit, digital I/O, or relay link signals.
User Connections 29 Output Safety Cover ô Analog Connector í – Output Bus Bar ÷ – Local Sense Terminal û + Local Sense Terminal ø + Output Bus Bar ù Signal Common î Local Sense Jumpers .
User Connections 30 Local Voltage Sensing Your power supply was shipped set up for local sensing. This means that the unit will sense and regulate its output at the output terminals, not at the load.
User Connections 31 Note The signal ground binding post on the rear panel is a convenient place to ground the sense shield. OVP Considerations The OVP circuit senses the voltage near the output terminals and not at the sense terminals.
User Connections 32 Load Connection ô Load í Analog Connector Connect for remote sensing (optional) Connect for local sensing (default) Figure 4-5. Single Load Connection (Remote Sen sing Optional) Connecting One Power supply To Multiple Loads Figure 4-6 shows how to connect a single power supply to more than one load.
User Connections 33 Analog Connector ô Slave Unit í Master Unit ÷ Program only the master. Set slave output and OVP slightly higher than the master to ensure that slave stays in CC mode û Load ø Load Connection Only local sensing permitted Connect for optional remote sensing Figure 4-7.
User Connections 34 Load Connection ô Analog Connector í Load ÷ Program each unit for full load current and 1/2 the load voltage Connect for remote sensing (optional) WARNING FLOATING VOLTAGES MUST NOT EXCEED ± 240 VDC NO OUTPUT TERMINAL MAY BE MORE THAN 240 V FROM CHASSIS GROUND.
User Connections 35 Programming. Note from Figure 4-1 that you have three options for programming the current. You can use a voltage source that is positive, negative, or floating with respect to Common P. Do not exceed ± 15 V with respect to Common P.
User Connections 36 ô í ÷ û ø ù A B From 1 to 16 direct supplies may be connected to 1 controller GPIB interface. Tighten connector thumbscrews by hand.
Front Panel Operation 37 5 Front Panel Operation Introduction This chapter shows you how to operate the front panel. It is assumed that you are familiar with the turn-on checkout procedure in Chapter 3. That chapter describes how to perform basic power supply functions from the control panel.
38 Front Panel Operation Figure 5-1. Front Panel Controls and Indicators Table 5-1. Front Panel Controls and Indicators (See Figure 5 -1) Control or Indicator Function or Indication Display VOLTS Shows present output voltage of the power supply. AMPS Shows present output current of the power supply.
Front Panel Operation 39 Table 5-1. Front Panel Controls and Indicators (continued) í SYSTEM Keys When the power supply is under remote control, press to enable local operation. This control can be defeated by a lock -out command over the GPIB Press to display the power supply’s GPIB address.
40 Front Panel Operation Programming The Output Important These instructions show how to program a single power supply. There are special considerations when you have two or more supplies connected in series or in autoparallel. See "Chapter 4 - User Connections and Considerations".
Front Panel Operation 41 Setting the OVP Level. Assuming that you have programmed the power supply for 45 volts, you can set the OVP level to 48 volts as follows: ■ Press . The display will change from meter mode to indicate 0V, followed by the present OVP value.
42 Front Panel Operation Programming Overcurrent Protection When enabled, overcurrent protection removes the power supply output whenever it goes into CC operation. This prevents the unit from indefinitely uniting the full programmed current to the load.
Front Panel Operation 43 Saving and Recalling Operating States You can save programming time by storing up to 5 operating states in nonvolatile memory. The front panel programming parameters that are saved are: ■ Output voltage, Output current, *OVP voltage, ■ OCP state (on or off), Output state (enabled or disabled).
44 Front Panel Operation 1. As a stand-alone unit (the only unit at the address). It has a primary address in the range of 0 to 30. For example: 5 or 7. 2. As the direct unit in a serial link. It is the only unit connected directly to the GPIB bus. The primary address is unique and can be from 0 to 30.
Remote Programming 45 6 Remote Programming Prerequisites for Remote Programming This organization of this guide assumes that you know or can learn the following information: 1. How to program in your controller language (Agilent BASIC, QUICKBASIC, C, etc.
46 Remote Programming GPIB Capabilities of the Power supply All power supply functions except for setting the GPIB address are programmable over the IEEE 488 bus (also known as the General Purpose Interface Bus or "GPIB"). The IEEE 488.1 capabilities of the power supply are listed in the Supplemental Characteristics in Table A-2.
Remote Programming 47 Subsystem Commands. Subsystem commands (see Figure 6-1) perform specific power supply functions. They are organized into an inverted tree structure with the "root" at the top. Some are single commands while others are grouped under other subsystems.
48 Remote Programming The optional header SOURCE precedes the current, digital, and voltage subsystems. This effectively makes : CURRENT, :DIGITAL, and : VOLTAGE root-level commands. Moving Among Subsystems In order to combine commands from different subsystems, you need to be able to restore the active path to the root.
Remote Programming 49 Types of SCPI Messages There are two types of SCPI messages, program and response. • A program message consists of one or more properly formatted SCPI commands sent from the controller to the power supply. The message, which may be sent at any time, requests the power supply to perform some action.
50 Remote Programming Headers. Headers (which are sometimes known as "keywords") are instructions recognized by the power supply interface. Headers may be either in the long form or the short form. Long Form The header is completely spelled out, such as VOLTAGE STATUS DELAY.
Remote Programming 51 SCPI Data Formats All data programmed to or returned from the power supply is ASCII. The data may be numerical or character string.
52 Remote Programming SCPI Command Completion SCPI commands sent to the power supply are processed either sequentially or in parallel. Sequential commands finish execution before a subsequent command begins. A parallel command can begin execution while a preexisting command is still executing (overlapping commands).
Remote Programming 53 Programming Voltage and Current The following statements program both voltage and current and return the actual output from the sense terminals: OUTP OFF Disable the output. VOLT 45;CURR 25 Program the voltage and current. VOLT?;CURR? Read back the programmed levels.
54 Remote Programming You can remotely save and recall operating states. See *SAV and *RCL in "Chapter 7 - Language Dictionary" for the parameters that are saved and recalled. Note When you turn the pow er supply on, it automatically retrieves the state stored in location 0.
Remote Programming 55 Note The last query string can be handled without difficulty. However, should you request too many queries, the system may return a "Query DEADLOCKED” error (-430).
56 Remote Programming Press Display returns to meter mode If you try to enter a forbidden number, ADDR ERROR is displayed. The following examples show how to set addresses: To set stand-along primary .
Remote Programming 57 DOS Drivers Types of Drivers The Agilent 82335A and National Instruments GPIB are two popular DOS drivers. Each is briefly described here. See the software documentation supplied with the driver for more details. Agilent 82335A Driver .
58 Remote Programming Programming Some Power supply Functions SAMPLE FOR POWER SUPPLY AT STAND-ALONE ADDRESS 6. SEQUENCE SETS UP CV MODE OPERATION, FORCES UNIT TO SWITCH TO CC MODE, AND DETECTS AND REPORTS MODE CHANGE.
Remote Programming 59 Programming Some Power supply Functions (continued) 1220 CALL IOENTER (PS,OEVENT) ’Read back event bit 1225 IF PCIB.ERR < > NOERR THEN ERROR PCIB.BASERR 1230 IF (OEVENT AND 1024) = 1024 THEN PRINT "Unit switched to CC mode.
60 Remote Programming Programming Some Power supply Functions (continued) 1130 ’Enable Status Byte OPER summary bit 1135 CODES$ = "*SRE 128" :GOSUB 2000 1140 ‘ 1146 'Arm trigger cir.
Remote Programming 61 Programming Some Power supply Functions (continued) 3030 WHILE C< >O 3035 D$=MID$(OUTPUT$,I,C-I) 3040 OUTPUT(X)=VAL(D$) ’Get values 3045 I=C+1 3050 C=INSTR(I,OUTPUT$,&quo.
62 Remote Programming SCPI Confirmed Commands 1 This power supply conforms to Version 1990.0. ABOR OUTP:PROT:DEL TRIG[:STAR]:DEL CAL[:STAT) OUTP:PROT:DEL? TRIG[:STAR]:DEL? [SOUR]:CURR[:LEV][:IMM][:AMP.
Language Dictionary 63 7 Language Dictionary Introduction This section gives the syntax and parameters for all the IEEE 488.2 SCPI commands and the Common commands used by the power supply. It is assumed that you are familiar with the material in Chapter 6 - "Remote Programming".
64 Language Dictionary Description Of Common Commands Figure 7-1 shows the common commands and queries. These commands are listed alphabetically in the dictionary. If a command has a corresponding query that simply returns the data or status specified by the command, then both command and query are included under the explanation for the command.
Language Dictionary 65 *ESE Meaning and Type Event Status Enable Device Status Description This command programs the Standard Event Status Enable register bits. The programming determines which events of the Standard Event Status Event register (see *ESR? ) are allowed to set the ESB (Event Summary Bit) of the Status Byte register.
66 Language Dictionary *IDN? Meaning and Type Identification Query System Interface Description This query requests the power supply to identify itself.
Language Dictionary 67 *OPC? Meaning and Type Operation Complete Device Status Description This query causes the interface to place an ASCII "1" in the Output Queue when all pending operations are completed. Pending operations are as defined for the *OPC command.
68 Language Dictionary Command Syntax *PSC <bool> Parameters 0 | 1 | OFF | ON Example *PSC 0 *PSC 1 Query Syntax *PSC? Returned Parameters <NR1> 0 | 1 Related Commands *ESE *SRE *PSC causes a write cycle to nonvolatile memory. If *PSC is programmed to 0 , then the *ESE and *SRE commands also cause a write cycle to nonvolatile memory.
Language Dictionary 69 *RST Meaning and Type Reset Device State Description This command resets the power supply to a factory-defined state as defined below.
70 Language Dictionary *SRE Meaning and Type Service Request Enable Device Interface Description This command sets the condition of the Service Request Enable Register.
Language Dictionary 71 Query Syntax *STB? Returned Parameters <NR1> (Register binary value) Related Commands (None) *TRG Meaning and Type Trigger Device Trigger Description This command generates a trigger when the trigger subsystem has BUS selected as its source.
72 Language Dictionary Description Of Subsystem Commands Figure 7-2 is a tree diagram of the subsystem commands. Commands followed by a question mark (?) take only the query form. Except as noted in the syntax descriptions, all other commands take both the command and query form.
Language Dictionary 73 Current Subsystem This subsystem programs the output current of the power supply. CURR CURR:TRIG These commands set the immediate current level or the pending triggered current level of the power supply. The immediate level is the current programmed for the output terminals.
74 Language Dictionary Digital Subsystem This subsystem programs the control port on the back of the power supply when it is configured for Digital I/O operation. DIG:DATA This command sets and reads the power supply digital control port when that port is configured for Digital I/O operation.
Language Dictionary 75 DISP:MODE Switches the display between its normal metering mode and a mode in which it displays text sent by the user. The command uses the character data <CRD> format.
76 Language Dictionary Initiate Subsystem This subsystem enables the trigger system. INIT INIT:CONT When a trigger is enabled with this command, an event on a selected trigger source causes the specified trigging action to occur. If the trigger subsystem is not enabled, all trigger commands are ignored.
Language Dictionary 77 Output Subsystem This subsystem controls the power supply’s voltage and current outputs and an optional output relay. OUTP This command enables or disables the power supply output. The state of a disabled output is a condition of zero output voltage and a model-dependent minimum source current (see Table 7-1).
78 Language Dictionary OUTP:REL This command is valid only if the power supply is configured for the optional relay connector. Programming ON closes the relay contacts; programming OFF opens them. The relay is controlled independently of the output state.
Language Dictionary 79 Status Operation Registers The bit configuration of all Status Operation registers is shown in the following table. See "Chapter 8 - Status Reporting" for more explanation of these registers.
80 Language Dictionary STAT:OPER:NTR STAT:OPER:PTR These commands set or read the value of the Operation NTR (Negative-Transition) and PTR (Positive-Transition) registers.
Language Dictionary 81 STAT:QUES:COND? This query returns the value of the Questionable Condition register. That is a read-only register which holds the real-time (unlatched) questionable status of the power supply.
82 Language Dictionary System Commands System commands query error messages and software versions, and program system language functions. SYST:ERR? This query returns the next error number followed by its corresponding error message string from the remote programming error queue.
Language Dictionary 83 Trigger Subsystem This subsystem controls remote triggering of the power supply. TRIG When the trigger subsystem is enabled, TRIG generates a trigger signal. The trigger will then: 1. Initiate a pending level change as specified by CURR[:LEV]:TRIG or VOLT[:LEV]:TRIG.
84 Language Dictionary Command Syntax [SOURce]:VOLTage[:LEVel][:IMMediate][AMPLitude] <NRf+> [SOURce][:VOLTage[:LEVel]:TRIGgered[:AMPLitude] <NRf+> Parameters Table 7-1 Default Suffix V *RST Value Table 7-1 Examples VOLT 200 MA VOLTAGE:LEVEL 200 MA VOLTAGE:LEVEL:IMMEDIATE:AMPLITUDE 2.
Language Dictionary 85 Command Summary This summary lists all power supply subsystem commands in alphabetical order, followed by all common commands in alphabetical order.
86 Language Dictionary Command Summary Command Parameters Subsystem Commands ABOR (none) CAL (See Appendix A in the Operating Manual) [SOUR]:CURR[:LEV][:IMM][:AMPL] <NRf+>[suffix] [SOUR]:CURR[:L.
Status Reporting 87 8 Status Reporting Power supply Status Structure Figure 8-1 shows the status register structure of the power supply. The Standard Event, Status Byte, and Service Request Enable registers and the Output Queue perform standard GPIB functions as defined in the IEEE 488.
Status Reporting 88 Table 8-2. Bit Configurations of Status Registers Bit Signal Meaning Bit Signal Meaning Operation Status Group Standard Event Status Group 0 CAL The interface is computing new calibration constants. 0 OPC Operation complete. 5 WTG The interface is waiting for a trigger.
Status Reporting 89 Questionable Status Group Register Functions The Questionable Status registers record signals that indicate abnormal operation of the power supply. As shown in Figure 8-1, the group consists of the same type of registers as the Status Operation group.
Status Reporting 90 Status Byte Register This register summarizes the information from all other status groups as defined in the "IEEE 488.2 Standard Digital Interface for Programmable Instrumentation" standard. The bit configuration is shown in Table 8-1.
Status Reporting 91 Initial Conditions At Power On Status Registers When the power supply is turned on, a sequence of commands initializes the status registers. For the factory-default *RST power-on state, Table 8-4 shows the register states and corresponding power-on commands.
Status Reporting 92 Servicing an Operation Status Mode Event This example assumes you want a service request generated whenever the power supply switches to the CC (constant current) mode. From Figure 8-1, note that the required path is for a condition at bit 10 (CC) of the Operation Status register to set bit 6 (RQS) of the Status Byte register.
Specifications 93 A Specifications Specifications are performance parameters warranted over the specified temperature range. Supplemental Characteristics are not warranted but are descriptions of performance determined either by design or type testing.
Specifications 94 Table A-2. Supplemental Characteristics for Agilent E4356A Parameter Value Output Programming Range Voltage: Current: Overvoltage Protection: 81.9 V 30.71 A 96 V Typical Programming Resolution Voltage: Current: Overvoltage Protection: 20 mV 7.
Specifications 95 Table A-2. Supplemental Characteristics (continued) Parameter Value Command Processing Time (Average time for output voltage to change after receipt of digital data when the unit is .
Specifications 96 Table A-2. Supplemental Characteristics (continued) Safety Compliance Complies with: Designed to comply with : CSA 22.2 No.231,IEC 348 UL 1244 RFI Suppression Complies with: CISPR-ll, Group 1, Class B Dimensions Width: Height (with removable feet) : Depth (with safety cover) : 425.
Calibration 97 B Calibration Introduction The power supply may be calibrated either from the front panel or from a controller over the GPIB. The procedures given here apply to all models. Important These instructions do not include verification procedures.
Calibration 98 Front Panel Calibration Eight shifted keys and the Entry keypad are used for calibration functions (see Chapter 5 for explanations of shifted keys and the Entry keypad). The following procedures assume you understand how to operate front panel keys.
Calibration 99 Table B-2. Typical Front Panel Calibration Procedure Action Display Response Enabling the Calibration Mode 1. Begin calibration by pressing . 2. Enter calibration password from Entry keypad. If password is correct the Cal annunciator will come on.
Calibration 100 Recovering From Calibration Problems You can encounter serious calibration problems if you cannot determine a calibration password that has been changed or the power supply is severely out of calibration.
Calibration 101 Calibration Language Dictionary The calibration commands are listed in alphabetical order. The format for each command follows that shown in Chapter 7. Calibration error messages that can occur during GPIB calibration are shown in Table B -3.
Calibration 102 CAL:STAT This command enables and disables the calibration mode. The calibration mode must be enabled before the power supply will accept any other calibration commands. The first parameter specifies the enabled or disabled state. The second parameter is the password.
Calibration 103 BASIC Calibration Program The following program can be run on any controller operating under Agilent BASIC. The assumed power supply address is 5 and calibration password is 4356. If required, change these parameters in the appropriate statements.
Calibration 104 Figure B-2. BASIC Calibration Program (continued) 480 Current_cal: ! Imon DAC and Current DAC calibration 490 Err_found=0 500 PRINT TABXY(5,10),"CONNECT INSTRUMENTS AS SHOWN IN FIG.
Verification 105 C Verification Introduction This appendix provides operation verification test procedures. The tests do not check all the operating parameters, but verify that the power supply is performing properly. The required test equipment and acceptable test results are specified in tables at the end of this appendix.
106 Verification Performing The Tests General Measurement Techniques Figure C-1 shows the setup for the tests. Be certain to use load leads of sufficient wire gauge to carry the output current (see Table 8 -1). To avoid noise pickup, use coaxial cable or shielded pairs for the test leads.
Verification 107 Current Programming and Readback Accuracy This test verifies that the current programming and readback are within specification. Connect the appropriate current monitoring resistor (see Table C-1) as shown in Figure C-1(2). The accuracy of the resistor must be as specified in the table.
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Error Messages 109 D Error Messages Power supply Hardware Error Messages Front panel error messages resulting from selftest errors or runtime failures are described in “Chapter 3 - Turn-On Checkout”. Calibration Error Messages Front panel error messages resulting from calibration errors are described in Appendix B.
Error Messages 110 Table D-1. Summary of System Error Messages (continued) Error Number Error String [Description/Explanation/Examples] -141 Invalid character data [bad character, or unrecognized] -14.
Line Voltage Conversion 111 E Line Voltage Conversion SHOCK HAZARD . Hazardous voltage can remain inside the power supply even after it has been turned off. This procedure should only be done by qualified electronics service personnel. Line voltage conversion is accomplished by setting a line voltage select switch.
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Digital Port Functions 113 F Digital Port Functions Digital Connector A 4-pin connector and a quick-disconnect mating plug are provided for digital input and output signals (see Figure F-l for wiring connections, and Table A-2 for electrical characteristics).
114 Digital Port Functions GPIB Figure F-2. Example of Inhibit Input In Figure F-3A, the FLT output is connected to a relay driver circuit that energizes a relay whenever a fault condition occurs in the power supply. The relay can be used to physically disconnect the output of the power supply from the load.
Digital Port Functions 115 Changing The Port Configuration As shipped from the factory, the digital port is configured for FLT/INH operation. You can change the configuration of the port to operate as a general -purpose digital input/output port to contro l your custom circuitry as shown in Figure F -4.
116 Digital Port Functions Digital I/O Operation The digital port can be configured (see Figure F -4) to provide a digital input/output to be used with custom digital interface circuits or relay circuits.
Digital Port Functions 117 Figure F-6 shows how to connect your power supply to an Agilent 59510A or 59511A Relay Accessory when the digital port is configured for relay link operation. An error will be generated if you attempt to program the relay box without first configuring the digital port for relay link operation .
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Compatibility Language 119 G Compatibility Language Introduction This power supply is programatically compatible with the Agilent 603xA Series AutoRanging Power Supplies (ARPS). This means that you can program this power supply over the GPIB using the ARPS commands.
120 Compatibility Language Table G-1. ARPS Commands ARPS Command 1 Description Similar SCPI Command VSET x VSET xV VSET xMV These commands program output voltage. See Table 7-1 for the programming ranges of these commands. Initial condition: 0 V VOLT ISET x ISET xA ISET xMA These commands program output current.
Compatibility Language 121 Table G-1. ARPS Commands (continued) ARPS Command 1 Description Similar SCPI Command RST This command resets the power supply if the output is disabled by the overvoltage, remote inhibit, or foldback protection circuits. The power supply resets to the parameters stored for the power-on state.
122 Compatibility Language Table G-1. ARPS Commands (continued) ARPS Command 1 Description Similar SCPI Command UNMASK? This command reads which bits in the status register have been enabled as fault conditions. The decimal equivalent of the total bit weight of all enabled bits is returned.
Index 123 Index —<— <bool>, 51 <NR1>, 51 <NR2>, 51 <NR3>, 51 <NRf+>, 51 <NRf>, 51 —A— AARD, 51 accessories, 14 active header path, 47 airflow, 18 analog .
124 Index connector analog, 27 digital, 28 controller connections, 35 linked, 35 stand-alone, 35 conventions, 46 CRD, 51 current monitor resistor, 107 current programming, 41, 53 current sinking, 16 c.
Index 125 load, inductive, 29 local voltage sensing, 30 location, 18 —M— master unit, 32 message terminator, 50 message unit separator, 50 moving among subsystems, 48 multiple load connections, 32.
126 Index data format, 51 header path, 47 message structure, 49 message types, 49 message unit, 49 multiple commands, 47 non-conformance, 62 program message, 49 queries, 48 references, 45 response mes.
Index 127 voltage programming, 40, 53 voltage sensing, local, 30 voltage sensing, remote, 30 VP, 27 VXIplug&play, 13, 20 —W— warranty, 2 wire capacity, 27 wire resistance, 27 wire size, 27 wri.
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Manual Updates T he foll o w i n g updates h a ve bee n mad e to thi s m a nu a l s i nce the print revision i ndicated o n the title p a ge. 3/01/00 A ll r e ferenc e s to HP have been ch a nged to Agil e nt. All r e fere nc e s to H P -IB have b een c ha n ge d to G P I B .
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