Agilent Technologies E3631A User Manual
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Agilent Technologies E3631A User Manual

Triple output dc power supply
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See also: Service Manual
User's Guide
Part Number: E3631-90002
Eighth Edition, October 25, 2013
For Safety information, Warranties, and Regulatory information,
see the page behind the Index.
© Copyright Agilent Technologies, Inc. 2000–2013
All Rights Reserved.
Agilent E3631A
Triple Output
DC Power Supply

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  • Page 1 User’s Guide Part Number: E3631-90002 Eighth Edition, October 25, 2013 For Safety information, Warranties, and Regulatory information, see the page behind the Index. © Copyright Agilent Technologies, Inc. 2000–2013 All Rights Reserved. Agilent E3631A Triple Output DC Power Supply...
  • Page 2 The Agilent E3631A is a high performance 80 watt-triple output DC power supply with GPIB and RS-232 interfaces. The combination of bench-top and system features in this power supply provides versatile solutions for your design and test requirements. Convenient bench-top features Triple output •...
  • Page 3 The Front Panel at a Glance 1 Meter and adjust selection keys 7 I/O Configuration / Secure key 2 Tracking enable/disable key 8 Output On/Off key 3 Display limit key 9 Control knob 4 Recall operating state key 10 Resolution selection keys 5 Store operating state/Local key 11 Voltage/current adjust selection key 6 Error/Calibrate key...
  • Page 4 Meter and adjust selection keys Select the output voltage and current of any one supply (+6V, +25V, or -25V output) to be monitored on the display and allow knob adjustment of that supply. Tracking enable / disable key Enables / disables the track mode of ±25V supplies. Display limit key Shows the voltage and current limit values on the display and allows knob adjustment for setting limit values.
  • Page 5 N o t e All front panel keys and controls can be disabled with remote interface commands. The Agilent E3631A must be in “Local” mode for the front panel keys and controls to function.
  • Page 6 Display Annunciators Adrs Power supply is addressed to listen or talk over a remote interface. Power supply is in remote interface mode. Displays the output voltage and current for +6V supply. Knob is active for +6V supply. +25V Displays the output voltage and current for +25V supply. Knob is active for +25V supply.
  • Page 7 The Rear Panel at a Glance 1 Power-line voltage setting 4 Power-line module 2 Power-line fuse-holder assembly 5 GPIB (IEEE-488) interface connector 3 AC inlet 6 RS-232 interface connector Use the front-panel key to: I/O Config Select the GPIB or RS-232 interface (see chapter 3). •...
  • Page 8 Tutorial Chapter 7 describes basic operation of linear power supplies and gives specific details on the operation and use of the Agilent E3631A power supplies. Specifications Chapter 8 lists the power supply’s specifications.

  • Page 9: Environmental Conditions

    Environmental Conditions This instrument is designed for indoor use and in an area with low condensation. The table below shows the general environmental requirements for this instrument. Environmental condition Requirements Temperature Operating condition • 0 °C to 40 °C Storage condition •...

  • Page 10: Declaration Of Conformity

    The Declaration of Conformity (DoC) for this instrument is available on the Agilent website. You can search the DoC by its product model or description at the web address below. http://regulations.corporate.agilent.com/DoC/search.htm N o t e If you are unable to search for the respective DoC, please contact your local Agilent representative.

  • Page 11: Table Of Contents

    Contents Chapter 1 General Information Safety Considerations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17 Safety and EMC Requirements - - - - - - - - - - - - - - - - - - - - - - - - 17 Options and Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18 Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18...
  • Page 12 Parity Selection (RS-232)- - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 To Set the GPIB Address - - - - - - - - - - - - - - - - - - - - - - - - - - - - 52 To Set the Baud Rate and Parity (RS-232) - - - - - - - - - - - - - - - - 53 GPIB Interface Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - 55 RS-232 Interface Configuration - - - - - - - - - - - - - - - - - - - - - - - - - 56...
  • Page 13 Programs Agilent BASIC Programs - - - - - - - - - - - - - - - - - - - - - - - - - - - - 128 C and QuickBASIC Language Programs - - - - - - - - - - - - - - - - - - 128...
  • Page 14 Load Consideration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 150 Extending the Voltage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 152 Series Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 152 Remote Programming - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 153 Reliability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 155...

  • Page 15: Chapter 1 General Information

    General Information...

  • Page 16: General Information

    General Information This chapter provides a general description of your power supply. This chapter also contains instructions for initial inspection, location and cooling for bench and rack operation, selecting the power-line voltage, and connecting your power supply to ac power.

  • Page 17: Safety Considerations

    Chapter 1 General Information Safety Considerations Safety Considerations This power supply is a Safety Class I instrument, which means that it has a protective earth terminal. That terminal must be connected to earth ground through a power source with a 3-wire ground receptacle. Before installation or operation, check the power supply and review this manual for safety markings and instructions.

  • Page 18: Options And Accessories

    Extra English manual set (local language manual files are included on the CD-ROM, Agilent part number 5964-8251.) Accessories The accessories listed below may be ordered from your local Agilent Technologies Sales Office either with the power supply or separately. Agilent No.

  • Page 19: Description

    Description Description The Agilent E3631A power supply features a combination of programming capabilities and linear power supply performance that makes it ideal for power systems applications. The triple power supply delivers 0 to ± 25 V outputs rated at 0 to 1 A and 0 to +6 V output rated at 0 to 5 A.
  • Page 20 Chapter 1 General Information Description The front panel includes a VFD for displaying the output voltage and current. Two 4-digit voltage and current meters accurately show the actual or limit values of a selected supply simultaneously. Three meter selection keys choose the voltage and current of any one output to be monitored on the display.

  • Page 21: Installation

    Keep the original packing materials in case the power supply has to be returned to Agilent Technologies in the future. If you return the power supply for service, attach a tag identifying the owner and model number. Also include a brief description of the problem.
  • Page 22 A rack-mounting kit for a single instrument is available as Option 1CM (P/N 5063-9243). Installation instructions and hardware are included with each rack-mounting kit. Any Agilent System II instrument of the same size can be rack-mounted beside the Agilent E3631A power supply.
  • Page 23 Chapter 1 General Information Installation To rack mount two instruments of the same depth side-by-side, order lock-link kit 5061-9694 and flange kit 5063-9214. To install two instruments in a sliding support shelf, order support shelf 5063-9256, and slide kit 1494-0015.

  • Page 24: Input Power Requirements

    The power supply is shipped from the factory with a power-line cord that has a plug appropriate for your location. Contact the nearest Agilent Sales and Service Office if the wrong power-line cord is included with your power supply. Your power supply is equipped with a 3-wire grounding type power cord;...
  • Page 25 Chapter 1 General Information Input Power Requirements 1 Remove the power cord. Remove the fuse-holder 2 Install the correct line fuse. Remove the power- assembly with a flat-blade screwdriver from the line voltage selector from the power-line module. rear panel. 3 Rotate the power-line voltage selector until the 4 Replace the power-line voltage selector and the correct voltage appears.
  • Page 26 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

  • Page 27: Chapter 2 Initial Operation

    Initial Operation...
  • Page 28 Initial Operation There are three basic tests in this chapter. The automatic power-on test includes a self- test that checks the internal microprocessors and allows the user visually to check the display. The output check ensures that the power supply develops its rated outputs and properly responds to operation from the front panel.

  • Page 29: Preliminary Checkout

    See “Power-Line Voltage Selection”, starting on page 24 in chapter 1 if you need to change the power-line voltage or the power-line fuse. To replace the 2.5 AT fuse, order Agilent part number 2110-0913. To replace the 2 AT fuse, order Agilent part number 2110-0982.

  • Page 30: Power-On Checkout

    Chapter 2 Initial Operation Power-On Checkout Power-On Checkout The power-on test includes an automatic self-test that checks the internal microprocessors and allows the user visually to check the display. You will observe the following sequence on the display after pressing the front panel power switch to 1 All segments of the display including all annunciators will turn on for about one second.

  • Page 31: Output Checkout

    Chapter 2 Initial Operation Output Checkout Output Checkout The following procedures check to ensure that the power supply develops its rated outputs and properly responds to operation from the front panel. For complete performance and verification tests, refer to the Service Guide. For each step, use the keys shown on the left margins.
  • Page 32 Chapter 2 Initial Operation Output Checkout 5 Check the voltage function for the +25V supply. +25V Select the meter and adjust selection key for the +25V supply. The CV annunciator is still lit and the +25V annunciator will turn on. Repeat steps (3) and (4) to check the voltage function for the +25V supply.

  • Page 33: Current Output Checkout

    Chapter 2 Initial Operation Output Checkout Current Output Checkout The following steps check basic current functions with a short across the appropriate supply’s output. 1 Turn on the power supply. Power The power supply will go into the power-on / reset state; all outputs are disabled (the OFF annunciator turns on);...
  • Page 34 Chapter 2 Initial Operation Output Checkout 6 Ensure that the current can be adjusted from zero to the maximum rated value. Adjust the knob until the ammeter indicates 0 amps and then until the ammeter indicates 5.0 amps. 7 Check the current function for the +25V supply. +25V Disable the outputs by pressing the key and connect a short across...

  • Page 35: Chapter 3 Front-Panel Operation

    Front-Panel Operation...
  • Page 36 Front-Panel Operation So far you have learned how to install your power supply and perform initial operation. During the initial operation, you were briefly introduced to operating from the front panel as you learned how to check basic voltage and current functions. This chapter will describe in detail the use of these front-panel keys and show how they are used to accomplish power supply operation.

  • Page 37: Front-Panel Operation Overview

    Chapter 3 Front-Panel Operation Front-Panel Operation Overview Front-Panel Operation Overview The following section describes an overview of the front-panel keys before operating your power supply. • The power supply is shipped from the factory configured in the front-panel operation mode. At power-on, the power supply is automatically set to operate in the front-panel operation mode.

  • Page 38: Constant Voltage Operation

    Chapter 3 Front-Panel Operation Constant Voltage Operation Constant Voltage Operation To set up the power supply for constant voltage (CV) operation, proceed as follows. 1 Connect a load to the desired output terminals. With power-off, connect a load to the desired output terminals. 2 Turn on the power supply.
  • Page 39 Chapter 3 Front-Panel Operation Constant Voltage Operation 5 Adjust the knob for the desired current limit. Check that the Lmt annunciator still blinks. Set the knob for current control. The second digit of ammeter will be blinking. Adjust the knob to the desired current limit. 6 Adjust the knob for the desired output voltage.

  • Page 40: Constant Current Operation

    Chapter 3 Front-Panel Operation Constant Current Operation Constant Current Operation To set up the power supply for constant current (CC) operation, proceed as follows. 1 Connect a load to the output terminals of the desired supply. With power-off, connect a load to the desired output terminals. 2 Turn on the power supply.
  • Page 41 Chapter 3 Front-Panel Operation Constant Current Operation 5 Adjust the knob for the desired voltage limit. Check that the knob is still selected for voltage control and the Lmt annunciator blinks. Adjust the knob for the desired voltage limit. 6 Adjust the knob for the desired output current. Vol/Cur Set the knob for current control.

  • Page 42: Tracking Operation

    Chapter 3 Front-Panel Operation Tracking Operation Tracking Operation The ±25V supplies provide 0 to ±25 V tracking outputs. In the track mode, two voltages of the ±25V supplies track each other within ±(0.2% output +20 mV) for convenience in varying the symmetrical voltages needed by operational amplifiers and other circuits using balanced positive and negative inputs.

  • Page 43: Storing And Recalling Operating States

    Chapter 3 Front-Panel Operation Storing and Recalling Operating States Storing and Recalling Operating States You can store up to three different operating states in non-volatile memory. This also enables you to recall the entire instrument configuration with just a few key presses from the front panel.
  • Page 44 Chapter 3 Front-Panel Operation Storing and Recalling Operating States 4 Save the operating state. Store The operating state is now stored. To recall the stored state, go to the following steps. DONE This message appears on the display for approximately 1 second. 5 Turn on the recall mode.

  • Page 45: Disabling The Outputs

    Chapter 3 Front-Panel Operation Disabling the Outputs Disabling the Outputs The outputs of the power supply can be disabled or enabled from the front panel using key. Output On/Off • When the power supply is in the “Off” state, the OFF annunciator turns on and the three outputs are disabled.

  • Page 46: System-Related Operations

    • If the complete self-test is successful, “PASS” is displayed on the front panel. If the self-test fails, “FAIL” is displayed and the ERROR annunciator turns on. See the Service Guide for instructions on returning the power supply to Agilent Technologies for service.

  • Page 47: Error Conditions

    Chapter 3 Front-Panel Operation System-Related Operations Error Conditions When the front-panel ERROR annunciator turns on, one or more command syntax or hardware errors have been detected. A record of up to 20 errors can be stored in the power supply's error queue. See chapter 5 “Error Messages”, starting on page 115 for a complete listing of the errors.

  • Page 48: Display Control

    Disable / enable the display DISPlay {OFF|ON} Display the string enclosed in quotes <quoted string> DISPlay:TEXT Clear the displayed message DISPlay:TEXT:CLEar The following statement shows how to display a message on the front panel from a Agilent Technologies controller. "DISP:TEXT ’HELLO’"...

  • Page 49: Firmware Revision Query

    • Remote interface operation Returns “HEWLETT-PACKARD,E3631A,0,X.X-X.X-X.X” *IDN? Be sure to dimension a string variable with at least 40 characters. SCPI Language Version The power supply complies with the rules and regulations of the present version of SCPI (Standard Commands for Programmable Instruments).

  • Page 50: Remote Interface Configuration

    • Your GPIB bus controller has its own address. Be sure to avoid using the bus controller’s address for any instrument on the interface bus. Agilent Technologies controllers generally use address “21”. • If you enable the RS-232 interface, you must select the baud rate and parity to be used.

  • Page 51: Gpib Address

    • Your GPIB bus controller has its own address. Be sure to avoid the bus controller’s address for any instrument on the interface bus. Agilent Technologies controllers generally use address “21”.

  • Page 52: To Set The Gpib Address

    Chapter 3 Front-Panel Operation Remote Interface Configuration To Set the GPIB Address To configure the power supply for the GPIB interface, proceed as follows: 1 Turn on the remote configuration mode. I/O Config HPIB / 488 You will see the above message on the front-panel display if the power supply has not been changed from the default setting.

  • Page 53: To Set The Baud Rate And Parity (Rs-232)

    Chapter 3 Front-Panel Operation Remote Interface Configuration To Set the Baud Rate and Parity (RS-232) To configure the power supply for the RS-232 interface, proceed as follows: 1 Turn on the remote configuration mode. I/O Config HPIB / 488 You will see the above message on the display if the power supply has not been changed from the default setting.
  • Page 54 Chapter 3 Front-Panel Operation Remote Interface Configuration 5 Save the change and turn off the I/O configuration mode. I/O Config CHANGE SAVED The RS-232 baud rate and parity selections are stored in non-volatile memory, and does not change when power has been off or after a remote interface reset. The power supply displays a message to show that the change is now in effect.

  • Page 55: Gpib Interface Configuration

    The GPIB connector on the rear panel connects your power supply to the computer and other GPIB devices. Chapter 1 lists the cables that are available from Agilent Technologies. An GPIB system can be connected together in any configuration (star, linear, or both) as long as the following rules are observed: •...

  • Page 56: Rs-232 Interface Configuration

    Chapter 3 Front-Panel Operation RS-232 Interface Configuration RS-232 Interface Configuration You connect the power supply to the RS-232 interface using the 9-pin (DB-9) serial connector on the rear panel. The power supply is configured as a DTE (Data Terminal Equipment) device. For all communications over the RS-232 interface, the power supply uses two handshake lines: DTR (Data Terminal Ready, on pin 4) and DSR (Data Set Ready, on pin 6).

  • Page 57: Connection To A Computer Or Terminal

    The cable and adapter diagrams shown below can be used to connect the power supply to most computers or terminals. If your configuration is different than those described, order the Agilent 34399A, 34399A Adapter Kit. This kit contains adapters for connection to other computers, terminals, and modems. Instructions and pin diagrams are included with the adapter kit.

  • Page 58: Dtr/Dsr Handshake Protocol

    DB-25 Serial Connection If your computer or terminal has a 25-pin serial port with a male connector, use the null-modem cable and 25-pin adapter included with the Agilent 34398A Cable Kit. The cable and adapter pin diagram are shown below. 5182-4794...

  • Page 59: Rs-232 Troubleshooting

    • Verify that you have connected the correct interface cable and adapters. Even if the cable has the proper connectors for your system, the internal wiring may be incorrect. The Agilent 34398A Cable Kit can be used to connect the power supply to most computers or terminals.

  • Page 60: Calibration Overview

    Chapter 3 Front-Panel Operation Calibration Overview Calibration Overview This section gives an overview of the calibration features of the power supply. For more detailed discussion of the calibration procedures, see the Service Guide. Calibration Security This feature allows you to enter a security code to prevent accidental or unauthorized calibrations of the power supply.
  • Page 61 Chapter 3 Front-Panel Operation Calibration Overview To Unsecure for Calibration You can unsecure the power supply for calibration either from the front panel or over the remote interface. The power supply is secured when shipped from the factory, and the security code is set to “HP003631”. •...
  • Page 62 Chapter 3 Front-Panel Operation Calibration Overview To Secure Against Calibration You can secure the power supply against calibration either from the front panel or over the remote interface. The power supply is secured when shipped from the factory, and the security code is set to “HP003631”. Be sure to read the security code rules on page 60 before attempting to secure the power supply.
  • Page 63 Chapter 3 Front-Panel Operation Calibration Overview To Change the Security Code To change the security code, you must first unsecure the power supply, and then enter a new code. Be sure to read the security code rules on page 60 before attempting to secure the power supply.

  • Page 64: Calibration Count

    Chapter 3 Front-Panel Operation Calibration Overview Calibration Count You can determine the number of times that your power supply has been calibrated. Your power supply was calibrated before it left the factory. When you receive your power supply, read the count to determine its initial value. The calibration count feature can be performed from the remote interface only.

  • Page 65: Chapter 4 Remote Interface Reference

    Remote Interface Reference...
  • Page 66 Remote Interface Reference • SCPI Command Summary, page 65 • Simplified Programming Overview, page 70 • Using the APPLy Command, page 73 • Output Setting and Operation Commands, page 74 • Triggering Commands, page 79 • System-Related Commands, page 82 •...

  • Page 67: Scpi Command Summary

    Chapter 4 Remote Interface Reference SCPI Command Summary SCPI Command Summary This section summarizes the SCPI (Standard Commands for Programmable Instruments) commands available to program the power supply over the remote interface. Refer to the later sections in this chapter for more complete details on each command.

  • Page 68: Triggering Commands

    Chapter 4 Remote Interface Reference SCPI Command Summary Output Setting and Operation Commands APPLy voltage {P6V|P25V|N25V}[,{< >|DEF|MIN|MAX}[,{ |DEF|MIN|MAX}]] <current> APPLy? [{P6V|P25V|N25V}] INSTrument [:SELect] {P6V|P25V|N25V} [:SELect]? :NSELect {1|2|3} :NSELect? <list> :COUPle[:TRIGger] {ALL|NONE| :COUPle[:TRIGger]? MEASure :CURRent[:DC]? [{P6V|P25V|N25V}] [:VOLTage][:DC]? [{P6V|P25V|N25V}] OUTPut [:STATe] {OFF|ON} [:STATe]? :TRACk[:STATe] {OFF|ON} :TRACk[:STATe]?
  • Page 69 Chapter 4 Remote Interface Reference SCPI Command Summary System-Related Commands DISPlay[:WINDow] [:STATe] {OFF|ON} [:STATe]? quoted string :TEXT[:DATA] < > :TEXT[:DATA]? :TEXT:CLEar SYSTem :BEEPer[:IMMediate] :ERRor? :VERSion? *IDN? *RST *TST? *SAV {1|2|3} *RCL {1|2|3} Calibration Commands CALibration :COUNt? numeric value :CURRent[:DATA] < >...
  • Page 70 Chapter 4 Remote Interface Reference SCPI Command Summary Status Reporting Commands STATus:QUEStionable [:EVENt]? enable value :ENABle < > :ENABle? :INSTrument[:EVENt]? enable value :INSTrument:ENABle < > :INSTrument:ENABle? :INSTrument:ISUMmary<n>[:EVENt]? :INSTrument:ISUMmary<n>:CONDition? enable value :INSTrument:ISUMmary<n>:ENABle < > :INSTrument:ISUMmary<n>:ENABle? SYSTem:ERRor? *CLS enable value *ESE < >...
  • Page 71 Chapter 4 Remote Interface Reference SCPI Command Summary IEEE-488.2 Common Commands *CLS enable value *ESE < > *ESE? *ESR? *IDN? *OPC *OPC? *PSC {0|1} *PSC? *RST *SAV {1|2|3} *RCL {1|2|3} enable value *SRE < > *SRE? *STB? *TRG *TST? *WAI...

  • Page 72: Simplified Programming Overview

    Chapter 4 Remote Interface Reference Simplified Programming Overview Simplified Programming Overview First-time This section gives an overview of the basic techniques used to program the power SCPI users, supply over the remote interface. This section is only an overview and does not give see page 104 all of the details you will need to write your own application programs.

  • Page 73: Reading A Query Response

    Chapter 4 Remote Interface Reference Simplified Programming Overview Reading a Query Response Only the query commands (commands that end with “?”) will instruct the power supply to send a response message. Queries return either output values or internal instrument settings. For example, the following statements executed from your computer will read the power supply's error queue and print the most recent error: Dimension string array (80 elements) dimension statement...

  • Page 74: Programming Ranges And Output Identifiers

    The following table lists the programming ranges, output names, and output numbers for each output. Refer to this table to identify parameters when programming the power supply. Table 4-1. Agilent E3631A Programming Ranges and Output Identifiers Output +6V output...

  • Page 75: Using The Apply Command

    Chapter 4 Remote Interface Reference Using the APPLy Command Using the APPLy Command The APPLy command provides the most straightforward method to program the power supply over the remote interface. You can select the specific output, output voltage, and output current all in one command. APPLy {P6V | P25V | N25V}[,{<voltage>| DEF | MIN | MAX}[,{<current>| DEF | MIN | MAX}]] This command is combination of INSTrument:SELect, [SOURce:] VOLTage,...

  • Page 76: Output Setting And Operation Commands

    Chapter 4 Remote Interface Reference Output Setting and Operation Commands Output Setting and Operation Commands This section describes the low-level commands used to program the power supply. Although the APPLy command provides the most straightforward method to program the power supply, the low-level commands give you more flexibility to change individual parameters.
  • Page 77 Chapter 4 Remote Interface Reference Output Setting and Operation Commands INSTrument:COUPle[:TRIGger] {ALL | NONE |< >} list This command defines a coupling between various logical outputs of the power supply. The couple command consists of an optional subsystem node followed by a single parameter.

  • Page 78: Measurement Commands

    Chapter 4 Remote Interface Reference Output Setting and Operation Commands INSTrument:COUPle[:TRIGger]? This query returns the currently coupled output. Returns “ALL”, “NONE”, or a list. If any output is not coupled, “NONE” is returned. If all of three outputs are coupled, “ALL”...

  • Page 79: Output On/Off And Tracking Operation Commands

    Chapter 4 Remote Interface Reference Output Setting and Operation Commands Output On/Off and Tracking Operation Commands OUTPut[:STATe] {OFF | ON} This command enables or disables all three outputs of the power supply. The state of the disabled outputs is a condition of less than 0.6 volts of opposite polarity with no load and less than 60 mA of opposite direction with a short circuit.
  • Page 80 Chapter 4 Remote Interface Reference Output Setting and Operation Commands [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPLitude] | MINimum | MAXimum} <current> This command programs the pending triggered current level of the power supply. The pending triggered current level is a stored value that is transferred to the output terminals when a trigger occurs.

  • Page 81: Triggering Commands

    Chapter 4 Remote Interface Reference Triggering Commands Triggering Commands The power supply's triggering system allows a change in voltage and current when receiving a trigger, to select a trigger source, and to insert a trigger. Triggering the power supply is a multi-step process. •...
  • Page 82 • You can also trigger the power supply from the GPIB interface by sending the IEEE-488 Group Execute Trigger (GET) message. The following statement shows how to send a GET from a Agilent Technologies controller. TRIGGER 705 (group execute trigger) •...

  • Page 83: Triggering Commands

    Chapter 4 Remote Interface Reference Triggering Commands Triggering Commands INITiate[:IMMediate] This command causes the trigger system to initiate. This command completes one full trigger cycle when the trigger source is an immediate and initiates the trigger subsystem when the trigger source is bus. TRIGger[:SEQuence]:DELay{ | MINimum | MAXimum} <seconds>...

  • Page 84: System-Related Commands

    Chapter 4 Remote Interface Reference System-Related Commands System-Related Commands DISPlay[:WINDow][:STATe] {OFF | ON} This command turns the front-panel display off or on. When the display is turned off, outputs are not sent to the display and all annunciators are disabled except the ERROR annunciator.
  • Page 85 The command returns a string with the following format (be sure to dimension a string variable with at least 40 characters): HEWLETT-PACKARD,E3631A,0,X.X-X.X-X.X...
  • Page 86 Chapter 4 Remote Interface Reference System-Related Commands *RST This command resets the power supply to its power-on state as follows: Command State CURR[:LEV][:IMM] Output dependent value* CURR[:LEV]:TRIG Output dependent value* DISP[:STAT] INST[:SEL] INST:COUP NONE OUTP[:STAT] OUTP:TRAC TRIG:DEL TRIG:SOUR VOLT[:LEV][:IMM] VOLT[:LEV]:TRIG *The reset operation sets the current of +6V output to 5 A and the current of +25V and -25V outputs to 1 A.

  • Page 87: Calibration Commands

    Chapter 4 Remote Interface Reference Calibration Commands Calibration Commands See chapter 3 “Calibration Overview”, starting on page 60 for an overview of the calibration features of the power supply. For more detailed discussion of the calibration procedures, see the Service Guide. CALibration:COUNt? This command queries the power supply to determine the number of times it has been calibrated.
  • Page 88 Chapter 4 Remote Interface Reference Calibration Commands CALibration:SECure:STATe {OFF | ON>}, <code> This command unsecures or secures the power supply for calibration. The calibration code may contain up to 12 characters over the remote interface. CALibration:SECure:STATe? This command queries the secured state for calibration of the power supply. The returned parameter is “0”...

  • Page 89: Rs-232 Interface Commands

    Chapter 4 Remote Interface Reference RS-232 Interface Commands RS-232 Interface Commands Use the front-panel “I/O configuration” key to select the baud rate, parity, and the number of data bits (See chapter 3 “Remote Interface Configuration”, starting on page 50). SYSTem:LOCal This command places the power supply in the local mode during RS-232 operation.

  • Page 90: The Scpi Status Registers

    Chapter 4 Remote Interface Reference The SCPI Status Registers The SCPI Status Registers All SCPI instruments implement status registers in the same way. The status system records various instrument conditions in three register groups: the Status Byte register, the Standard Event register, and the Questionable Status register group. The status byte register records high-level summary information reported in the other register groups.
  • Page 91 Chapter 4 Remote Interface Reference The SCPI Status Registers...

  • Page 92: Scpi Status System

    Chapter 4 Remote Interface Reference The SCPI Status Registers SCPI Status System Binary Weights = 16 = 32 = 64 = 128 = 256 = 512 = 1024 = 2048 = 4096 = 8192 = 16384 = 32768...

  • Page 93: The Questionable Status Register

    Chapter 4 Remote Interface Reference The SCPI Status Registers The Questionable Status Register The Questionable Status register provides information about unexpected operation of the power supply. Bit 4 reports a fault with the fan, and bit 13 summarizes questionable outputs for any of the three supplies. For example if one of the three supplies is in constant voltage mode and due to an overload loses regulation, bit 13 is set (latched).
  • Page 94 Chapter 4 Remote Interface Reference The SCPI Status Registers To determine the operating mode (CV or CC) for the power supply send STAT:QUES:INST:ISUM<n>:COND?, where n is 1, 2, or 3 depending on the output. Bit 1 true indicates the output is in constant voltage mode, bit 0 true indicates constant current mode, both bits true indicates neither the voltage nor the current is regulated, and both bits false indicates the outputs of the power supply are off.

  • Page 95: The Standard Event Register

    Chapter 4 Remote Interface Reference The SCPI Status Registers The Standard Event Register The Standard Event register reports the following types of instrument events: power- on detected, command syntax errors, command execution errors, self-test or calibration errors, query errors, or when an *OPC command is executed. Any or all of these conditions can be reported in the Standard Event Summary bit (ESB, bit 5) of Status Byte register through the enable register.

  • Page 96: The Status Byte Register

    Chapter 4 Remote Interface Reference The SCPI Status Registers The Standard Event register is cleared when: • You execute the *CLS (clear status) command. • You query the event register using the *ESR? (Event Status register) command. For example, 28 (4 + 8 + 16) is returned when you have queried the status of the Standard Event register, QYE, DDE, and EXE conditions have occurred.

  • Page 97: Using Service Request (Srq) And Serial Poll

    Chapter 4 Remote Interface Reference The SCPI Status Registers The Status Byte Summary register is cleared when: • You execute the *CLS (clear status) command. • Querying the Standard Event register (*ESR? command) will clear only bit 5 in the Status Byte summary register. For example, 24 (8 + 16) is returned when you have queried the status of the Status Byte register, QUES and MAV conditions have occurred.

  • Page 98: Using *Stb? To Read The Status Byte

    Chapter 4 Remote Interface Reference The SCPI Status Registers C a u t i o n The IEEE-488 standard does not ensure synchronization between your bus controller program and the instrument. Use the *OPC? command to guarantee that commands previously sent to the instrument have completed. Executing a serial poll before a *RST,*CLS, or other commands have completed can cause previous conditions to be reported.

  • Page 99: To Determine When A Command Sequence Is Completed

    Chapter 4 Remote Interface Reference The SCPI Status Registers To Determine When a Command Sequence is Completed 1 Send a device clear message to clear the power supply's output buffer (e.g., CLEAR 705). 2 Clear the event registers with the *CLS (clear status) command. 3 Enable the “operation complete”...

  • Page 100: Status Reporting Commands

    Chapter 4 Remote Interface Reference Status Reporting Commands Status Reporting Commands See diagram “SCPI Status System”, on page 92 in this chapter for detailed information of the status register structure of the power supply. SYSTem:ERRor? This query command reads one error from the error queue. When the front-panel ERROR annunciator turns on, one or more command syntax or hardware errors have been detected.
  • Page 101 Chapter 4 Remote Interface Reference Status Reporting Commands STATus:QUEStionable:INSTrument[:EVENt]? This command queries the Questionable Instrument event register. The power supply returns a decimal value which corresponds to the binary-weighted sum of all bits in the register and clears the register. STATus:QUEStionable:INSTrument:ENABle <enable value>...
  • Page 102 Chapter 4 Remote Interface Reference Status Reporting Commands STATus:QUEStionable:INSTrument:ISUMmary<n>:ENABle? This query returns the value of the Questionable Instrument Isummary enable register. n is 1, 2, or 3. *CLS This command clears all event registers and Status Byte register. *ESE <enable value> This command enables bits in the Standard Event enable register.
  • Page 103 Chapter 4 Remote Interface Reference Status Reporting Commands *SRE <enable value> This command enables bits in the Status Byte enable register. *SRE? This command queries the Status Byte Enable register. The power supply returns a decimal value which corresponds to the binary-weighted sum of all bits set in the register.

  • Page 104: An Introduction To The Scpi Language

    Chapter 4 Remote Interface Reference An Introduction to the SCPI Language An Introduction to the SCPI Language SCPI (Standard Commands for Programmable Instruments) is an ASCII-based instrument command language designed for test and measurement instruments. Refer to “Simplified Programming Overview”, starting on page 70 for an introduction to the basic techniques used to program the power supply over the remote interface.

  • Page 105: Command Format Used In This Manual

    Chapter 4 Remote Interface Reference An Introduction to the SCPI Language Command Format Used in This Manual The format used to show commands in this manual is shown below: <current> CURRent { |MINimum|MAXimum} The command syntax shows most commands (and some parameters) as a mixture of upper- and lower-case letters.

  • Page 106: Command Separators

    Chapter 4 Remote Interface Reference An Introduction to the SCPI Language Command Separators A colon ( : ) is used to separate a command keyword from a lower-level keyword as shown below: "SOURce:CURRent:TRIGgered" A semicolon ( ; ) is used to separate two commands within the same subsystem, and can also minimize typing.

  • Page 107: Querying Parameter Settings

    Chapter 4 Remote Interface Reference An Introduction to the SCPI Language Querying Parameter Settings You can query the value of most parameters by adding a question mark (?) to the command. For example, the following command sets the output current to 5 amps: "CURR 5"...

  • Page 108: Scpi Parameter Types

    Chapter 4 Remote Interface Reference An Introduction to the SCPI Language SCPI Parameter Types The SCPI language defines several different data formats to be used in program messages and response messages. Numeric Parameters Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs, decimal points, and scientific notation.

  • Page 109: Halting An Output In Progress

    • The power supply's input and output buffers are cleared. • The power supply is prepared to accept a new command string. • The following statement shows how to send a device clear over the GPIB interface using Agilent BASIC. IEEE-488 Device Clear CLEAR 705 •...

  • Page 110: Scpi Conformance Information

    SCPI Conformance Information SCPI Conformance Information The Agilent E3631A Power Supply conforms to the 1995.0 version of the SCPI standard. Many of the commands required by the standard are accepted by the power supply but are not described in this manual for simplicity or clarity. Most of these non-documented commands duplicate the functionality of a command already described in this manual.
  • Page 111 Chapter 4 Remote Interface Reference SCPI Conformance Information SCPI Confirmed (continued) STATus :QUEStionable[:EVENt]? :QUEStionable:ENABle <enable value> :QUEStionable:ENABle? :QUEStionable:INSTrument[:EVENt]? :QUEStionable:INSTrument:ENABle <enable value> :QUEStionable:INSTrument:ENABle? :QUEStionable:INSTrument:ISUMary<n>[:EVENt]? :QUEStionable:INSTrument:ISUMary<n>:CONDition? :QUEStionable:INSTrument:ISUMary<n>:ENABle <enable value> :QUEStionable:INSTrument:ISUMary<n>:ENABle? SYSTem :BEEPer[:IMMediate] :ERRor? :VERSion TRIGger [:SEQuence]:DELay {<seconds>|MIN|MAX} [:SEQuence]:DELay? [:SEQuence]:SOURce{BUS|IMM} [:SEQuence]:SOURce? INITiate[:IMMediate]...
  • Page 112 SCPI Conformance Information Device Specific Commands The following commands are device-specific to the Agilent E3631A power supply. They are not included in the 1995.0 version of the SCPI standard. However, these commands are designed with the SCPI standard in mind and they follow all of the command syntax rules defined by the standard.

  • Page 113: Ieee-488 Conformance Information

    Chapter 4 Remote Interface Reference IEEE-488 Conformance information IEEE-488 Conformance information Dedicated Hardware Lines IEEE-488 Common Commands Attention *CLS Interface Clear <enable value> *ESE Remote Enable *ESE? Service Request Enable *ESR? *IDN? *OPC Addressed Commands *OPC? *PSC {0|1} Device Clear *PSC? End or Identify *RST...
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  • Page 115: Chapter 5 Error Messages

    Error Messages...

  • Page 116: Error Messages

    Error Messages When the front-panel ERROR annunciator turns on, one or more command syntax or hardware errors have been detected. A record of up to 20 errors is stored in the power supply's error queue. The power supply beeps once each time an error is generated.

  • Page 117: Execution Errors

    Chapter 5 Error Messages Execution Errors Execution Errors Invalid character -101 An invalid character was found in the command string. You may have inserted a character such as #, $, or % in the command keyword or within a parameter. Example: OUTP:TRAC #ON Syntax error...
  • Page 118 Chapter 5 Error Messages Execution Errors Program mnemonic too long -112 A command header was received which contained more than the maximum 12 characters allowed. Undefined header -113 A command was received that is not valid for this power supply. You may have misspelled the command or it may not be a valid command.
  • Page 119 Chapter 5 Error Messages Execution Errors Suffix error -130 A suffix was incorrectly specified for a numeric parameter. You may have misspelled the suffix or the numeric parameter does not accept a suffix. Example: TRIG:DEL 0.5 SECS Invalid suffix -131 A suffix was incorrectly specified for a numeric parameter.
  • Page 120 Chapter 5 Error Messages Execution Errors String data not allowed -158 A character string was received but is not allowed for the command. Check the list of parameters to verify that you have used a valid parameter type. Example: TRIG:DEL ’zero’ Block data errors -160 to -168 The power supply does not accept block data.
  • Page 121 Chapter 5 Error Messages Execution Errors Self-test failed -330 The power supply's complete self-test failed from the remote interface (*TST? command). In addition to this error, more specific self-test errors are also reported. See also “Self-Test Errors”, starting on page 123. Queue overflow -350 The error queue is full because more than 20 errors have occurred.
  • Page 122 Chapter 5 Error Messages Execution Errors RS-232 framing error RS-232 overrun error RS-232 parity error Command allowed only with RS-232 There are three commands which are only allowed with the RS-232 interface: SYSTem:LOCal, SYSTem:REMote, and SYSTem:RWLock. Input buffer overflow Output buffer overflow Command not allowed in local You should always execute the SYSTem:REMote command before sending other commands over the RS-232 interface.

  • Page 123: Self-Test Errors

    Chapter 5 Error Messages Self-Test Errors Self-Test Errors The following errors indicate failures that may occur during a self-test. Refer to the Service Guide for more information. Front panel does not respond RAM read/write failed A/D sync stuck A/D slope convergence failed Cannot calibrate rundown gain Rundown gain out of range Rundown too noisy...

  • Page 124: Calibration Errors

    Chapter 5 Error Messages Calibration Errors Calibration Errors The following errors indicate failures that may occur during a calibration. Refer to the Service Guide for more information. Cal security disabled by jumper The calibration security feature has been disabled with a jumper inside the power supply.
  • Page 125 Chapter 5 Error Messages Calibration Errors Cal checksum failed, secure state Cal checksum failed, string data Cal checksum failed, store/recall data in location 1 Cal checksum failed, store/recall data in location 2 Cal checksum failed, store/recall data in location 3 Cal checksum failed, DAC cal constants Cal checksum failed, readback cal constants Cal checksum failed, GPIB address...
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  • Page 127: Chapter 6 Application Programs

    Application Programs...

  • Page 128: Agilent Basic Programs

    Programmable Instruments) commands available to program the power supply. Agilent BASIC Programs All of the Agilent BASIC example programs in this chapter were developed and tested on an HP 9000 Series 300 controller. Each device on the GPIB (IEEE-488) interface must have a unique address.

  • Page 129: Using The Apply Command

    • How to use the APPLy command to set output voltages and currents for three outputs. • How to use the *SAV command to store the instrument configuration in memory. Agilent BASIC / GPIB (Program 1) 10 ! 20 ! This program sets the output voltages and currents for 30 ! three outputs.
  • Page 130 Chapter 6 Application Programs Using the APPLy Command C / GPIB (Program 1) /*************************************************************************** This program sets up output voltages and currents for three outputs. This program also shows how to use "state storage" to store the instrument configuration in memory. ***************************************************************************/ #include <stdio.h>...
  • Page 131 Chapter 6 Application Programs Using the APPLy Command . . . continued void out_setting(void) /* Set 5.0 volts/1.0 amp to +6V output, 15 volts/1.0 amp to +25V output and -10 volts/0.8 amps to -25V output. */ static char *cmd_string[]= "APPL P6V, 5.0, 1.0;" /* Set 5.0 volts / 1.0 amp to +6V output */ "APPL P25V, 15.0, 1.0;"...
  • Page 132 Chapter 6 Application Programs Using the APPLy Command . . . continued void check_error(char *func_name) /* Read error queue to determine if errors have occurred */ char message[80]; int length = 80; IOOUTPUTS(ADDR, "SYST:ERR?", 9); /* Read the error queue */ IOENTERS(ADDR, message, &length);...

  • Page 133: Using The Low-Level Commands

    • How to use the low-level commands to program three outputs. • How to specify a trigger source and trigger the power supply over the GPIB interface. Agilent BASIC / GPIB (Program 2) 10 ! 20 ! This program uses low-level SCPI commands to program the 30 ! power supply to output a 3 volts/0.5 amps for +6V output,...
  • Page 134 ' also shows the use of a trigger received over the GPIB interface to ' initiate a single trigger. The program is written in QuickBASIC and ' uses Agilent 82335 GPIB card and GPIB command library. ISC& = 7 ' GPIB select code is "7"...
  • Page 135 Chapter 6 Application Programs Using the Low-Level Commands . . . continued Info1$ = "INST:SEL P6V" ' Select +6V output Length1% = LEN(Info1$) CALL IOOUTPUTS(Dev&, Info1$, Length1%) IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR Info1$ = "VOLT:TRIG 3" ' Set the pending voltage to 3 volts Length1% = LEN(Info1$) CALL IOOUTPUTS(Dev&, Info1$, Length1%) IF PCIB.ERR <>...
  • Page 136 Chapter 6 Application Programs Using the Low-Level Commands . . . continued Info1$ = "INIT" ' Initiate the trigger subsystem Length1% = LEN(Info1$) CALL IOOUTPUTS(Dev&, Info1$, Length1%) IF PCIB.ERR <> NOERR THEN ERROR PCIB.BASERR Info1$ = "*TRG" ' Set output changes after time delay Length1% = LEN(Info1$) CALL IOOUTPUTS(Dev&, Info1$, Length1%) IF PCIB.ERR <>...

  • Page 137: Using The Status Registers

    • How to service the interrupt if an error occurs and read the power supply's error queue using the SYST:ERR? command. Agilent BASIC / GPIB (Program 3) 10 ! 20 ! This program uses the status registers to generate an 30 ! interrupt if a SCPI error occurs.
  • Page 138 Chapter 6 Application Programs Using the Status Registers . . . continued 260 ! 270 ! Set the power supply to an output for three outputs 280 ! OUTPUT @Psup;"APPL P6V,3.0, 0.5" ! Set 3 V/0.5 A for +6V output, OUTPUT @Psup;"APPL P25V,10.0, 0.8"...

  • Page 139: Rs-232 Operation Using Quickbasic

    Chapter 6 Application Programs RS-232 Operation Using QuickBASIC RS-232 Operation Using QuickBASIC The following example shows how to send command instruction and receive command responses over the RS-232 interface using QuickBASIC. RS-232 Operation Using QuickBASIC (Program 4) LOCATE 1, 1 DIM cmd$(100), resp$(100) ' Set up serial port for 9600 baud, none parity, 8 bits;...
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  • Page 141: Chapter 7 Tutorial

    Tutorial...
  • Page 142 Tutorial The Agilent E3631A is a high performance instrument capable of delivering clean dc power. But to take full advantage of the performance characteristics designed into the power supply, certain basic precautions must be observed when connecting it for use on the lab bench or as a controlled power supply.

  • Page 143: Overview Of Agilent E3631A Operation

    To keep the voltage across the series resistance low, some supplies use preregulation before the rectifier bridge. Figure 7-1 shows a controlled transformer tap as used in the Agilent E3631A. This is one of several techniques using semiconductors for preregulation to reduce the power dissipated across the series element.
  • Page 144 The Agilent E3631A contains three linear regulated power supplies. Each is controlled by a control circuit that provides voltages to program the outputs. Each supply sends back to the control circuit voltages representing outputs at the terminals.

  • Page 145: Output Characteristics

    Each of the three Agilent E3631A power supply outputs can operate in either constant- voltage (CV) mode or constant-current (CC) mode. Under certain fault conditions, the power supply can not operate in either CV or CC mode and becomes unregulated.
  • Page 146 Chapter 7 Tutorial Output Characteristics Figure 7-5 shows the operating modes of the three outputs of the Agilent E3631A power supply. The operating point of one supply will be either above or below the line R . This line represents a load where the output voltage and the output current are equal to the voltage and current setting.

  • Page 147: Unregulated State

    Normal mode voltage noise is in the form of ripple related to the line frequency plus some random noise. Both of these are of very low value in the Agilent E3631A. Careful lead layout and keeping the power supply circuitry away from power devices and other noise sources will keep these values low.
  • Page 148 Chapter 7 Tutorial Output Characteristics Figure 7-6. Simplified Diagram of Common Mode and Normal Mode Sources of Noise When the load changes very rapidly, as when a relay contact is closed, the inductance in the hook up wire and in the power supply output will cause a spike to appear at the load.

  • Page 149: Connecting The Load

    Chapter 7 Tutorial Connecting the Load Connecting the Load Output Isolation The outputs of all three power supplies are isolated from earth ground. Any output terminal may be grounded, or an external voltage source may be connected between any terminal output and ground. However, output terminals must be kept within ±240 Vdc of ground.

  • Page 150: Load Consideration

    Chapter 7 Tutorial Connecting the Load Load Consideration Capacitive Loading In most cases, the power supply will be stable for almost any size load capacitance. Large load capacitors may cause ringing in the power supply's transient response. It is possible that certain combinations of load capacitance, equivalent series resistance, and load lead inductance will result in instability.
  • Page 151 Chapter 7 Tutorial Connecting the Load Reverse Current Loading An active load connected to the supply may actually deliver a reverse current to the supply during a portion of its operating cycle. An external source can not be allowed to pump current into the supply without risking loss of regulation and possible damage.

  • Page 152: Extending The Voltage

    In the Agilent E3631A the two 25V supplies can be operated in series to obtain one 0 - 50V supply. The power supply can be put in “Track” mode and then the output will be twice that shown on the front panel.

  • Page 153: Remote Programming

    Chapter 7 Tutorial Remote Programming Remote Programming During remote programming a constant-voltage regulated power supply is called upon to change its output voltage rapidly. The most important factor limiting the speed of output voltage change is the output capacitor and load resistor. Figure 7-7.
  • Page 154 Chapter 7 Tutorial Remote Programming If no load resistor is attached to the power supply output terminal, then the output voltage will rise linearly at a rate of C when programmed upward, and , the shortest possible up-programming time. Figure 7-8. Speed of Response -Programming Down Figure 7-8 shows that when the power supply is programmed down, the regulator senses that the output voltage is higher than desired and turns off the series transistors entirely.

  • Page 155: Reliability

    A fan internal to the Agilent E3631A is essential to keep internal temperatures low. To assist in cooling the Agilent E3631A the sides and rear of the Agilent E3631A should be kept clear.
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  • Page 157: Chapter 8 Specifications

    Specifications...

  • Page 158: Specifications

    Specifications The performance specifications are listed in the following pages. Specifications are warranted in the temperature range of 0 to 40 °C with a resistive load. Supplemental characteristics, which are not warranted but are descriptions of performance determined either by design or testing. The service guide contains procedures for verifying the performance specifications.

  • Page 159: Performance Specifications

    Chapter 8 Specifications Performance Specifications Performance Specifications (@ 0 °C - 40 °C) Output Ratings +6V Output 0 to +6 V ; 0 to 5 A +25V Output 0 to +25 V ; 0 to 1 A -25V Output 0 to -25 V ; 0 to 1 A Programming Accuracy 12 months (@ 25 °C ±...
  • Page 160 Chapter 8 Specifications Performance Specifications Programming Resolution +6V Output +25V Output -25V Output Voltage 0.5 mV 1.5 mV 1.5 mV Current 0.5 mA 0.1 mA 0.1 mA Readback Resolution +6V Output +25V Output -25V Output Voltage 0.5 mV 1.5 mV 1.5 mV Current 0.5 mA...

  • Page 161: Supplemental Characteristics

    Chapter 8 Specifications Supplemental Characteristics Supplemental Characteristics Output Programming Range (maximum programmable values) +6V Output +25V Output -25V Output Voltage 0 to 6.18 V 0 to 25.75 V 0 to -25.75 V Current 0 to 5.15 A 0 to 1.03 A 0 to 1.03 A Temperature Coefficient ±(% of output + offset)
  • Page 162 Chapter 8 Specifications Supplemental Characteristics Cooling Fan cooled Operating Temperature 0 to 40 °C for full rated output. At higher temperatures, the output current is derated linearly to 50% at 55 °C maximum temperature. Output Voltage Overshoot During turn-on or turn-off of ac power, output plus overshoot will not exceed 1 V if the output control is set to less than 1 V.
  • Page 163 Chapter 8 Specifications Supplemental Characteristics Figure 8-1. Dimensions of Agilent E3631A Power Supply...
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  • Page 165 20 accessories 18 *SRE 103 configuration, remote interface 50 active load 151 *SRE? 103 connection adapter kit, Agilent 34399A 57 *STB? 98, 103 series 152 address, GPIB bus controller 50 *TRG 83 connector, GPIB 55 address,GPIB 51 *TST? 86...
  • Page 166 Index firmware revision query 49 linear power supplies 143 performance specifications 158 power dissipation 155 front panel load drawing 3 active 151 power-line cord 24 enabled / disable 48 capacitive loading 150 power-line voltage selection 24 key discription 4 inductive loading 150 power-on / reset state 30, 33, 38, 40 voltage and current settings 5 pulse loading 150...
  • Page 167 Index RS-232 operation 139 specifications 158 troubleshooting, RS-232 59 square bracket 67, 105 stability 150 Š™ standard event register 95 safety and EMC requirements 17 unregulated condition 147 start bit 56 safety consideration 17 unregulated state 147 status byte register 96 SCPI command summary 67 unwanted signals 147 status register 90, 137...
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  • Page 169 To the extent allowed by local contain additional information to equipment or permanent ification or misuse, operation law, Agilent shall not be liable and replacement pages which loss of data. outside of the environmental for errors contained herein or you merge into the manual.
  • Page 170 Product specifications and descriptions in this document are subject to change without notice. Always refer to the English version at the Agilent Web site for the latest revision. © Agilent Technologies, Inc. 2000–2013 Eighth Edition, October 25, 2013 E3631A-90002...

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