Keysight Technologies E3630 Series User Manual
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Keysight Technologies E3630 Series User Manual

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Keysight E3633A and
E3634A DC Power Supplies
User's Guide

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Summary of Contents for Keysight Technologies E3630 Series

  • Page 1 Keysight E3633A and E3634A DC Power Supplies User’s Guide...
  • Page 2 DOCUMENT IS PROVIDED “AS IS,” sition Regulation (“FAR”) 2.101. Pursu- AND IS SUBJECT TO BEING © Keysight Technologies 1998 - 2020 ant to FAR 12.212 and 27.405-3 and CHANGED, WITHOUT NOTICE, IN No part of this manual may be repro- Department of Defense FAR Supple- FUTURE EDITIONS.

  • Page 3: Certification

    90 days from date of delivery. During the warranty period, either Keysight or Keysight Technologies will, at its option, either repair or replace products which prove to be defective. Keysight does not warrant that operation the software, firmware, or hardware shall be uninterrupted or error free.

  • Page 4: Limitation Of Warranty

    Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. KEYSIGHT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

  • Page 5: Safety Symbols

    Safety Symbols The following symbols on the instrument and in the documentation indicate precautions which must be taken to maintain safe operation of the instrument. Caution, risk of danger (refer to this manual for specific Warning or Caution Direct current (DC) information) Protective conductor terminal Alternating current (AC)

  • Page 6: Safety Considerations

    Safety Considerations Read the information below before using this instrument. 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 manual violates safety standards for design, manufacture, and intended use of the instrument.
  • Page 7 Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to a Keysight Technologies Sales and Service Office for service and repair to ensure that safety features are maintained.

  • Page 8: Regulatory Markings

    Regulatory Markings The CE marking is a legal compliance marking of the European Community. The CSA mark is a registered This CE marking shows that the trademark of the Canadian product complies with all the relevant Standards Association. European Legal Directives. This symbol indicates the time period during which no hazardous or toxic The RCM mark is a registered...

  • Page 9: Waste Electrical And Electronic Equipment (Weee) Directive

    Waste Electrical and Electronic Equipment (WEEE) Directive This instrument complies with the WEEE Directive marking requirement. This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste. Product category: With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument”...
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  • Page 11: Table Of Contents

    Table of Contents Certification ..........3 Warranty Information .
  • Page 12 Input Power Requirements ........36 Power-line cord .
  • Page 13 SCPI language version ........78 Remote Interface Configuration .
  • Page 14 System-Related Commands ....... . 123 Calibration Commands ........128 RS-232 Interface Commands .
  • Page 15 Error Messages Error Messages ......... . .156 Execution Errors .
  • Page 16 Specifications Performance Specifications ....... . . 198 Transient response time .

  • Page 17: List Of Figures

    List of Figures Figure 3-1 Recommended protection circuit for battery charging ......62 Figure 3-2 Remote voltage sensing connections .
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  • Page 19: List Of Tables

    List of Tables Table 4-1 Keysight E3633A programming ranges ...109 Table 4-2 Keysight E3634A Programming Ranges ..110 Table 4-3 Bit Definitions - Questionable Status Register .
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  • Page 21 Keysight E3633A and E3634A DC Power Supplies User’s Guide General Information Safety Considerations Options and Accessories Description Installation Product at a Glance This is the User’s guide for your Keysight E3633A and E3634A DC power supplies. Unless otherwise stated, the information in this manual applies to both two models.

  • Page 22: General Information

    General Information 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 23: Options And Accessories

    General Information Options and Accessories Options Option 0EM, 0E3, and 0E9 determine which power-line voltage is selected at the factory. The standard unit is configured for 115 Vac ± 10%, 47-63 Hz input voltage. For more information about changing the power-line voltage setting, see “Power-line voltage selection”...

  • Page 24: Accessories

    General Information Accessories The accessories listed below may be ordered from your local Keysight Technologies Sales Office either with the power supply or separately. Keysight part no. Description 10833A: GPIB cable, 1 meter (3.3 feet) 10833B: GPIB cable, 2 meter (6.6 feet) 34398A: RS-232, 9 pin (f) to 9 pin (f), 2.5 m (8.2 ft.) cable;...

  • Page 25: Description

    General Information Description The Keysight E3633A and Keysight E3634A DC power supplies feature a combination of programming capabilities and linear power supply performance that makes them ideal for power systems applications. The power supply is programmable locally from the front panel or remotely over the GPIB and RS-232 interfaces.
  • Page 26 General Information – Calibrating the power supply, including changing the calibration secure code – Configuring the power supply for remote interfaces – Enabling or disabling the output When operated over the remote interface, the power supply can be both a listener and a talker.
  • Page 27 General Information Floating the power supply output more than ±60 Vdc from the chassis WARNING presents an electric shock hazard to the operator. Do not float the outputs more than ±60 Vdc when metal shorting bars without insulation are used to connect the (+) output to the (+) sense and the (-) output to the (-) sense terminals.
  • Page 28 General Information The power supply is shipped with a detachable, 3-wire grounding type power cord.The ac line fuse is an extractor type on the rear panel. The power supply can be calibrated from the front panel directly or with a controller over the GPIB or RS-232 interface using calibration commands.

  • Page 29: Installation

    Keep the original packing materials in case the power supply has to be returned to Keysight 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 30 General Information Rack mounting The power supply can be mounted in a standard 19-inch rack cabinet using one of three optional kits available. 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.
  • Page 31 General Information 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. Keysight E3633A and E3634A User’s Guide...

  • Page 32: Product At A Glance

    General Information Product at a Glance The front panel at a glance 8V/20A range selection key (E3633A) Store operating state/Local key 25V/7A range selection key (E3634A) Error/Calibrate key 20V/10A range selection key (E3633A) I/O Configuration key 50V/4A range selection key (E3634A) Output On/Off key Overvoltage protection key Control knob...

  • Page 33: Front-Panel Voltage And Current Limit Settings

    General Information 1 8V/20A* or 25V/7A** range selection key Selects the 8V/20A or 25V/ 7Arange and allows the full rated output to 8V/20A or 25V/7A. 2 20V/10A* or 50V/4A** range selection key Selects the 20V/10A or 50V/4A range and allows the full rated output to 20V/10A or 50V/4A. 3 Overvoltage protection key Enables or disables the overvoltage protection function, sets trip voltage level, and clears the overvoltage condition.
  • Page 34 General Information Front-panel voltage and current limit settings You can set the voltage and current limit values from the front panel using the following method. Use the voltage/current adjust selection key, the resolution selection keys, and the control knob to change the voltage and current limit values.

  • Page 35: Display Annunciators

    General Information Display annunciators Adrs Power supply is addressed to listen or talk over a remote interface. Power supply is in remote interface mode. Shows the 8V/20A range is selected. (Keysight E3633A model) Shows the 20V/10A range is selected. (Keysight E3633A model) Shows the 25V/7A range is selected.

  • Page 36: The Rear Panel At A Glance

    General Information The rear panel at a glance Power-line voltage setting GPIB (IEEE-488) interface connection Power-line fuse-holder assembly RS-232 interface connector AC inlet Rear output terminals Power-line module Use the front-panel key to: – Select the GPIB or RS-232 interface (see chapter 3). –...

  • Page 37: Input Power Requirements

    General Information Input Power Requirements You can operate your power supply from a nominal 100 V, 115 V, or 230 V single phase ac power source at 47 to 63 Hz. An indication on the rear panel shows the nominal input voltage set for the power supply at the factory. If necessary, you can change the power-line voltage setting according to the instructions on the next page Power-line cord...
  • Page 38 General Information 1 Remove the power cord. Remove the fuse-holder 2 Install the correct line fuse. Remove the power-line assembly with a flat-blade screwdriver from the rear panel. voltage selector from the power-line module. 3 Rotate the power-line voltage selector until the correct 4 Replace the power-line voltage selector and the voltage appears.
  • Page 39 Keysight E3633A and E3634A DC Power Supplies User’s Guide Initial Operation Preliminary Checkout Power-on Checkout Output Checkout 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.

  • Page 40: Initial Operation

    1 Check the list of supplied items. Verify that you have received the following items with your power supply. If anything is missing, contact your nearest Keysight Technologies Sales Office. – One power cord for your location. – This User’s Guide.

  • Page 41: Power-On Checkout

    Initial Operation 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 on. 1 The front-panel display will light up briefly while the instrument performs its power-on self-test.
  • Page 42 Initial Operation 4 Enable the outputs. The OFF annunciator turns off and the 8V or 25V , OVP, OCP, and CV annunciators are lit. The blinking digit can be adjusted by turning the knob. Notice that the display is in the meter mode. “Meter mode” means that the display shows the actual output voltage and current.

  • Page 43: Output Checkout

    Initial Operation 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. Voltage output checkout The following steps verify basic voltage functions with no load 1 Turn on the power supply...
  • Page 44 Initial Operation You can use the resolution selection keys to move the blinking digit to the right NOTE or left when setting the voltage. Keysight E3633A and E3634A User’s Guide...

  • Page 45: Current Output Checkout

    Initial Operation Current output checkout The following steps check basic current functions with a short across the power supply’s output. 1 Turn on the power supply. The power supply will go into the power-on / reset state; the output is disabled (the OFF annunciator turns on);...
  • Page 46 Initial Operation 5 Set the knob to the current control to check that the front-panel ammeter properly responds to knob control. Turn the knob clockwise or counter clockwise when the display is in the meter mode (the Limit annunciator is off). Check that the ammeter responds to knob control and the voltmeter indicates nearly zero (the voltmeter will show the voltage drop caused by the test lead).
  • Page 47 Keysight E3633A and E3634A DC Power Supplies User’s Guide Front-Panel Operation Front-Panel Operation Overview Constant Voltage Operation Constant Current Operation Storing and Recalling Operating States Programming Overvoltage Protection Programming Overcurrent Protection Remote Voltage Sensing at the Front and Rear Terminals Disabling the Output Disabling the Output Using an External Relay Knob Locking...

  • Page 48: Front-Panel Operation

    Front-Panel Operation 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 49 Front-Panel Operation – The display provides the present operating status of the power supply with annunciators and also informs the user of error codes. For example, the power supply is operating in CV mode in the 8V/20A or 25V/7A range and controlled from the front panel, then the CV and 8V or 25V annunciators...

  • Page 50: Constant Voltage Operation

    Front-Panel Operation Constant Voltage Operation To setup the power supply for constant voltage (CV) operation, proceed as follows. – Front-panel operation: 1 Connect a load to the output terminals With the power-off, connect a load to the (+) and (-) output terminals. 2 Turn on the power supply The power supply will go into the power-on / reset state;...
  • Page 51 Front-Panel Operation 4 Adjust the knob for the desired current limit. Check that the Limit annunciator still blinks. Set the knob for current control. The second digit of the ammeter will be blinking. The blinking digit can be changed using the resolution selection keys and the blinking digit can be adjusted by turning the knob.
  • Page 52 Front-Panel Operation 8 Verify that the power supply is in the constant voltage mode. If you operate the power supply in the constant voltage (CV) mode, verify that the CV annunciator is lit. If the CC annunciator is lit, choose a higher current limit.

  • Page 53: Constant Current Operation

    Front-Panel Operation Constant Current Operation To set up the power supply for constant current (CC) operation, proceed as follows. – Front-panel operation: 1 Connect a load to the output terminals. With power-off, connect a load to the (+) and (-) output terminals. 2 Turn on the power supply The power supply will go into the power-on / reset state;...
  • Page 54 Front-Panel Operation 4 Adjust the knob for the desired voltage limit. Check that the Limit annunciator still blinks and the second digit of voltmeter blinks to indicate the knob is selected for voltage control.The blinking digit can be changed using the resolution keys and the blinking digit can be adjusted by turning the knob.
  • Page 55 Front-Panel Operation 8 Verify that the power supply is in the constant current mode. If you operate the power supply in the constant current (CC) mode, verify that the CC annunciator is lit. If the CV annunciator is lit, choose a higher voltage limit.

  • Page 56: Storing And Recalling Operating States

    Front-Panel Operation 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. The memory locations are supplied with the reset states from the factory for front-panel operation.
  • Page 57 Front-Panel Operation 4 Save the operating state. The operating state is now stored. To recall the stored state, go to the following steps. DONE 5 Turn on the recall mode. Memory location “1” will be displayed in the recall mode. RECALL 1 This message appears on the display for approximately 3 seconds.

  • Page 58: Programming Overvoltage Protection

    Front-Panel Operation Programming Overvoltage Protection Overvoltage protection guards the load against output voltages that reach a specified value greater than the programmed protection level. It is accomplished by shorting the output via an internal SCR when the trip level is set to equal or greater than 3 volts, or by programming the output to 1 volt when the trip level is set to less than 3 volts.
  • Page 59 Front-Panel Operation 4 Enable the OVP circuit. OVP ON You will see the above message after pressing key. 5 Exit the OVP menu. CHANGED The “CHANGED” message is highlighted for a second to show that the new OVP trip level is now in effect. If the OVP settings are not changed, “NO CHANGE”...
  • Page 60 Front-Panel Operation – Adjust the output voltage level 1 Lower the output voltage level. Lower the output voltage level below the OVP trip point after pressing key. The OVP and Limit annunciators are blinking. 2 Move to the clear mode. OVP CLEAR Press key twice to move to the OVP CLEAR mode.
  • Page 61 Front-Panel Operation – Adjust OVP trip level 1 Raise the OVP trip level. Press key and turn the knob to raise the OVP trip level. 2 Move to the OVP CLEAR mode. OVP CLEAR Press key to move the OVP clear mode. The “OVP ON” message appears on the display.
  • Page 62 Front-Panel Operation Figure 3-1 Recommended protection circuit for battery charging Keysight E3633A and E3634A User’s Guide...

  • Page 63: Programming Overcurrent Protection

    Front-Panel Operation Programming Overcurrent Protection Overcurrent protection guards the load against output currents that reach a specified value greater than the programmed protection level. It is accomplished by programming the output current to zero. The following steps show how to set the overcurrent protection trip level, how to check OCP operation and how to clear overcurrent condition.
  • Page 64 Front-Panel Operation 4 Enable the OCP circuit OCP ON You will see the above message after pressing the key. 5 Exit the OCP menu. CHANGED The “CHANGED” message is displayed for a second to show that the new OCP trip level is now in effect. If the OCP settings are not changed, “NO CHANGE” will be displayed.
  • Page 65 Front-Panel Operation – Adjust output current level 1 Lower the output current level. Press key and set the knob for current control by pressing then lower the output current level below the OCP trip point. 2 Move to the clear mode. OCP CLEAR Press key twice to move to the OCP CLEAR mode.
  • Page 66 Front-Panel Operation – Adjust OCP trip level 1 Raise the OCP trip level. Press key and turn the knob to raise the OCP trip level. 2 Move to the OCP CLEAR mode. OCP CLEAR Press the key to move to the OCP CLEAR mode. The “OCP ON” message appears on the display.

  • Page 67: Remote Voltage Sensing At The Front And Rear Terminals

    Front-Panel Operation Remote Voltage Sensing at the Front and Rear Terminals Remote voltage sensing is used to maintain regulation at the load and reduce the degradation of regulation that would occur due to the voltage drop in the leads between the power supply and the load. By connecting the power supply for remote voltage sensing, voltage is sensed at the load rather than at the power supply’s output terminals.

  • Page 68: Output Noise

    Front-Panel Operation Output noise Any noise picked up on the sense leads also appears at the output of the power supply and may adversely affect the voltage load regulation. Twist the sense leads to minimize external noise pickup and run them parallel and close to the load leads.
  • Page 69 Front-Panel Operation When you make the remote voltage sensing connections at the front or rear NOTE panel terminals, make sure to disconnect all the connections to the load and sense leads at the other end terminals. Do not make the sensing connections at both front and rear terminals at the same time.

  • Page 70: Remote Voltage Sensing At The Rear Panel

    Front-Panel Operation Remote voltage sensing at the rear panel External sense terminals are also available on the back of the power supply that allow the rear output voltages to be sensed at the load, which compensates for impedance losses in the load wiring. The front panel binding posts are paralleled with the rear output terminals.

  • Page 71: Disabling The Output

    Front-Panel Operation Disabling the Output The output of the power supply can be disabled or enabled from the front panel. When the power supply is in the “Off” state, the OFF annunciator turns on and the output is disabled. The OFF annunciator turns off when the power supply returns to the “On”...

  • Page 72: Disabling The Output Using An External Relay

    Front-Panel Operation Disabling the Output Using an External Relay When the output of the power supply is turned off, it is implemented by setting the output to 0 volts and 0.02 amps. This gives a zero output voltage without actually disconnecting the output. To disconnect the output an external relay must be connected between the output and the load.

  • Page 73: Knob Locking

    Front-Panel Operation Knob Locking The control knob can be locked to prevent from any unwanted changes occurring during an experiment, or when you leave the power supply unattended. To lock the knob, move the blinking digit to the right or left using the resolution selection until the blinking digit disappears.

  • Page 74: System-Related Operations

    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 Keysight Technologies for service. – Front-panel operation: To perform the complete front panel self-test, hold down the key as you turn on the power supply and hold down the key until you hear a long beep.

  • Page 75: Error Conditions

    Front-Panel Operation 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 “Error Messages” on page 156 for a complete listing of the errors.
  • Page 76 Front-Panel Operation – Front-panel operation: Press (Local) key to return to front-panel operation mode if the power supply is in remote operation mode. 3: ERR -102 If the ERROR annunciator is on, press key to view the errors. Use the knob to scroll through the error numbers.

  • Page 77: Display Control

    Front-Panel Operation Display control For security reasons, you may want to turn off the front-panel display. From the remote interface, you can display a 12-character message on the front panel. – The display can be enabled / disabled from the remote interface only. –...

  • Page 78: Firmware Revision Query

    Front-Panel Operation Firmware revision query The power supply has three microprocessors for control of various internal systems. You can query the power supply to determine which revision of firmware is installed for each microprocessor. – You can query the firmware version from the remote interface only. –...

  • Page 79: Remote Interface Configuration

    Front-Panel Operation Remote Interface Configuration Before you can operate the power supply over the remote interface, you must configure the power supply for the remote interface. This section gives information on configuring the remote interface. For additional information on programming the power supply over the remote interface, See “Remote Interface Reference”...

  • Page 80: Hpib Address

    Front-Panel Operation HPIB address Each device on the HPIB (IEEE-488) interface must have a unique address. You can set the power supply’s address to any value between 0 and 30. The current address is displayed momentarily on the front panel when you turn on the power supply.

  • Page 81: To Set The Hpib Address

    Front-Panel Operation To set the HPIB Address To configure the power supply for the HPIB interface, proceed as follows: 1 Turn on the remote configuration mode. HPIB / 488 You will see the above message on the front-panel display if the power supply has not been changed from the factory setting.

  • Page 82: To Set The Baud Rate And Parity (Rs-232)

    Front-Panel Operation 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. HPIB / 488 You will see the above message on the display if the power supply has not been changed from the factory setting.
  • Page 83 Front-Panel Operation 5 Save the change and turn off the I/O configuration mode. 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.

  • Page 84: Hpib Interface Configuration

    Front-Panel Operation HPIB Interface Configuration The HPIB connector on the rear panel connects your power supply to the computer and other HPIB devices. Chapter 1 lists the cables that are available from Hewlett-Packard. An HPIB system can be connected together in any configuration (star, linear, or both) as long as the following rules are observed: –...

  • Page 85: Rs-232 Interface Configuration

    Front-Panel Operation 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 86: Connection To A Computer Or Terminal

    Front-Panel Operation Connection to a computer or terminal To connect the power supply to a computer or terminal, you must have the proper interface cable. Most computers and terminals are DTE (Data Terminal Equipment) devices. Since the power supply is also a DTE device, you must use a DTE-to-DTE interface cable.
  • Page 87 Front-Panel Operation DB-9 Serial Connection NOTE If your computer or terminal has a 9-pin serial port with a male connector, use the null-modem cable included with the HP 34398A Cable Kit. This cable has a 9-pin female connector on each end. The cable pin diagram is shown below. DB-25 Serial Connection NOTE If your computer or terminal has a 25-pin serial port with a male connector, use...

  • Page 88: Dtr / Dsr Handshake Protocol

    Front-Panel Operation DTR / DSR Handshake Protocol The power supply is configured as a DTE (Data Terminal Equipment) device and uses the DTR (Data Terminal Ready) and DSR (Data Set Ready) lines of the RS-232 interface to handshake. The power supply uses the DTR line to send a hold-off signal.

  • Page 89: Rs-232 Troubleshooting

    Front-Panel Operation RS-232 troubleshooting Here are a few things to check if you are having problems communicating over the RS-232 interface. If you need additional help, refer to the documentation that came with your computer. – Verify that the power supply and your computer are configured for the same baud rate, parity, and number of data bits.

  • Page 90: Calibration Overview

    Front-Panel Operation 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 91 Front-Panel Operation If you forget your security code, you can disable the security feature by adding a NOTE jumper inside the power supply, and then entering a new code. See the Service Guide for more information. Keysight E3633A and E3634A User’s Guide...
  • Page 92 Front-Panel Operation 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 “HP003633” or “HP003634”...
  • Page 93 Front-Panel Operation – Remote interface operation: Secure or unsecure the power supply CAL:SEC:STAT {OFF|ON},<code> To unsecure the power supply, send the above command with the same code used to secure. For example, (E3633A) “CAL:SEC:STAT OFF, HP003633” (E3634A) “CAL:SEC:STAT OFF, HP003634” Keysight E3633A and E3634A User’s Guide...
  • Page 94 Front-Panel Operation 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 “HP003633” or “HP003634”...
  • Page 95 Front-Panel Operation – Remote interface operation: Secure or unsecure the power supply CAL:SEC:STAT {OFF|ON},<code> To secure the power supply, send the above command with the same code as used to unsecure. For example, (E3633A) “CAL:SEC:STAT ON, HP003633” (E3634A) “CAL:SEC:STAT ON, HP003634” Keysight E3633A and E3634A User’s Guide...
  • Page 96 Front-Panel Operation 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 90 before attempting to secure the power supply.

  • Page 97: Calibration Count

    Front-Panel Operation 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 98: Calibration Message

    Front-Panel Operation Calibration Message You can use the calibration message feature to record calibration information about your power supply. For example, you can store such information as the last calibration date, the next calibration due date, the power supply’s serial number, or even the name and phone number of the person to contact for a new calibration.
  • Page 99 Keysight E3633A and E3634A DC Power Supplies User’s Guide Remote Interface Reference SCPI Command Summary Simplified Programming Overview Using the APPLy Command Output Setting and Operation Commands Triggering Commands System-Related Commands Calibration Commands RS-232 Interface Commands The SCPI Status Registers Status Reporting Commands An Introduction to the SCPI Language Halting an Output in Progress...

  • Page 100: Remote Interface Reference

    Remote Interface Reference 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 101 Remote Interface Reference Output Setting and Measurement Commands APPLy {<voltage>|DEF|MIN|MAX}[,{<current>|DEF|MIN|MAX}] APPLy? [SOURce:] CURRent[:LEVel][:IMMediate][:AMPLitude]{<current>|MIN|MAX|UP|DOWN} CURRent[:LEVel][:IMMediate][:AMPLitude]? [MIN|MAX] CURRent[:LEVel][:IMMediate]:STEP[:INCRement] {<numeric value> |DEFault} CURRent[:LEVel][:IMMediate]:STEP[:INCRement]? {DEFault} CURRent[:LEVel]:TRIGgered[:AMPLitude] {<current>|MIN|MAX} CURRent[:LEVel]:TRIGgered[:AMPLitude]? [MIN|MAX] CURRent:PROTection[:LEVel] {<current>|MIN|MAX} CURRent:PROTection[:LEVel]? {MIN|MAX} CURRent:PROTection:STATe {0|1|OFF|ON} CURRent:PROTection:STATe? CURRent:PROTection:TRIPped? CURRent:PROTection:CLEar VOLTage[:LEVel][:IMMediate][:AMPLitude] {<voltage>|MIN|MAX|UP|DOWN} VOLTage[:LEVel][:IMMediate][:AMPLitude]? [MIN|MAX] VOLTage[:LEVel][:IMMediate]:STEP[:INCRement] {<numeric value>|DEFault} VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]? {DEFault} VOLTage[:LEVel]:TRIGgered[:AMPLitude] {<voltage>|MIN|MAX} VOLTage[:LEVel]:TRIGgered[:AMPLitude]? [MIN|MAX]...
  • Page 102 Remote Interface Reference VOLTage:RANGe {P8V |P20V |P25V |P50V |LOW|HIGH} VOLTage:RANGe? MEASure :CURRent[:DC]? [:VOLTage][:DC]? Triggering Commands INITiate[:IMMediate] TRIGger[:SEQuence] :DELay {<seconds>|MIN|MAX} :DELay? :SOURce {BUS|IMM} :SOURce? *TRG [1] For Keysight E3633A Model [2] For Keysight E3634A Model Keysight E3633A and E3634A User’s Guide...
  • Page 103 Remote Interface Reference System-Related Commands DISPlay[:WINDow] [:STATe] {OFF|ON} [:STATe]? :TEXT[:DATA] <quoted string> :TEXT[:DATA]? :TEXT:CLEar SYSTem :BEEPer[:IMMediate] :ERRor? :VERSion? OUTPut :RELay[:STATe] {OFF|ON} :RELay[:STATe]? [:STATe] {OFF|ON} [:STATe]? *IDN? *RST *TST? *SAV {1|2|3} *RCL {1|2|3} Keysight E3633A and E3634A User’s Guide...
  • Page 104 Remote Interface Reference Calibration Commands CALibration :COUNt? :CURRent[:DATA] <numeric value> :CURRent:LEVel {MIN|MID|MAX} :CURRent:PROTection :DAC:ERRor :SECure:CODE <new code> :SECure:STATe {OFF|ON},<code> :SECure:STATe? :STRing <quoted string> :STRing? :VOLTage[:DATA] <numeric value> :VOLTage:LEVel {MIN|MID|MAX} :VOLTage:PROTection Keysight E3633A and E3634A User’s Guide...
  • Page 105 Remote Interface Reference Status Reporting Commands STATus:QUEStionable :CONDition? [:EVENt]? :ENABle <enable value> :ENABle? SYSTem:ERRor? *CLS *ESE <enable value> *ESE? *ESR? *OPC *OPC? *PSC {0|1} *PSC? *SRE <enable value> *SRE? *STB? *WAI RS-232 Interface Commands SYSTem :LOCal :REMote :RWLock Keysight E3633A and E3634A User’s Guide...
  • Page 106 Remote Interface Reference IEEE-488.2 Common Commands *CLS *ESR? *ESE <enable value> *ESE? *IDN? *OPC *OPC? *PSC {0|1} *PSC? *RST *SAV {1|2|3} *RCL {1|2|3} *STB? *SRE <enable value> *SRE? *TRG *TST? *WAI Keysight E3633A and E3634A User’s Guide...

  • Page 107: Simplified Programming Overview

    Remote Interface Reference Simplified Programming Overview This section gives an overview of the basic techniques used to program the power supply over the remote interface. This section is only an overview and does not give all of the details you will need to write your own application programs. Refer to the remainder of this chapter and also chapter 6, “Application Programs”, for more details and examples.

  • Page 108: Reading A Query Response

    Remote Interface Reference 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)

  • Page 109: Power Supply Programming Ranges

    Remote Interface Reference Power supply programming ranges subsystem requires parameters for programming values. The available SOURce programming value for a parameter varies according to the desired output range of the power supply. The following table lists the programming values available and reset values of the Keysight E3633A and MINimum MAXimum...

  • Page 110: Keysight E3634A Programming Ranges

    Remote Interface Reference Table 4-2 Keysight E3634A Programming Ranges 0 - 25V/7A Range 0 - 50V/4A Range Voltage Programming Range 0 V to 25.75V 0 V to 51.5 V MAX Value 25.75 V 51.5 V MIN Value DEFault Value *RST Value Current Programming Range 0 A to 7.21 A...

  • Page 111: Using The Apply Command

    Remote Interface Reference Using the APPLy Command command provides the most straightforward method to program the APPLy power supply over the remote interface. You can select the output voltage and current in one command. APPLy {<voltage>| DEF|MIN|MAX}[,{<current>| DEF|MIN|MAX}] This command is combination of commands.
  • Page 112 Remote Interface Reference APPLy? This command queries the power supply’s present voltage and current setting values and returns a quoted string. The voltage and current are returned in sequence as shown in the sample string below (the quotation marks are returned as part of the string).

  • Page 113: Output Setting And Operation Commands

    Remote Interface Reference Output Setting and Operation Commands This section describes 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 output setting commands give you more flexibility to change the individual parameters.
  • Page 114 Remote Interface Reference CURRent? [MINimum|MAXimum] This query returns the presently programmed current level of the power supply. return the highest and lowest programmable CURR? MAX CURR? MIN current levels for the selected range. CURRent:STEP {<numeric value>|DEFault} This command sets the step size for current programming with the CURRent UP commands.
  • Page 115 Remote Interface Reference CURRent:PROTection {<current>|MINimum|MAXimum} This command sets the current level at which the overcurrent protection (OCP) circuit will trip. If the peak output current exceeds the OCP level, then the output current is programmed to zero. The Questionable Status register “OC” bit is set (see page 133).
  • Page 116 Remote Interface Reference VOLTage {<voltage>| MINimum|MAXimum|UP|DOWN} This command programs the immediate voltage level of the power supply. The immediate level is the voltage value of the output terminals. command changes the output of the power supply to the newly VOLTage programmed value regardless of the output range presently selected.
  • Page 117 Remote Interface Reference VOLTage:STEP {<numeric value>|DEFault} This command sets the step size for voltage programming with the VOLT UP commands. See the above example in the previous page. VOLT DOWN To set the step size to the minimum resolution, set the step size to “DEFault”.
  • Page 118 Remote Interface Reference VOLTage:PROTection? {MINimum|MAXimum}; This query returns the overvoltage protection trip level presently programmed. return the maximum and minimum VOLT:PROT? MAX VOLT:PROT? MIN programmable overvoltage trip levels. VOLTage:PROTection:STATe {0|1|OFF|ON} This command enables or disables the overvoltage protection function. An overvoltage condition can be cleared with the command after VOLT:PROT:CLE...
  • Page 119 Remote Interface Reference VOLTage:RANGe {P8V|P20V||LOW|HIGH} {P25V|P50V|LOW|HIGH} This command selects an output range to be programmed by the identifier. For example, when 8V/20A range is selected, the maximum programmable voltage and current are limited to 8.24 volts and 20.60 amps. When 20V/ range is selected, the maximum programmable voltage and current are limited to 20.60 volts and 10.30 amps.

  • Page 120: Triggering Commands

    – 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 Keysight Technologies controller. (group execute trigger) TRIGGER 705...
  • Page 121 Remote Interface Reference – To ensure synchronization when the bus source is selected, send the *WAI (wait) command. When the command is executed, the power supply *WAI waits for all pending operations to complete before executing any additional commands. For example, the following command string guarantees that the first trigger is accepted and is executed before the second trigger is recognized.

  • Page 122: Triggering Commands

    Remote Interface Reference Triggering commands INITiate 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:DELay {<seconds>| MINimum|MAXimum} This command sets the time delay between the detection of an event on the specified trigger source and the start of any corresponding trigger action on the power supply output.

  • Page 123: System-Related Commands

    Remote Interface Reference System-Related Commands DISPlay {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. The display state is automatically turned on when you return to the local mode.
  • Page 124 Remote Interface Reference OUTPut:RELay {OFF|ON} This command sets the state of two TTL signals on the RS-232 connector. These signals are intended for use with an external relay and relay driver. The TTL output is available on the RS-232 connector pin 1 and pin 9. When the state is “ON”, the TTL output of pin 1 is high (4.5 V) and pin 9 is OUTPut:RELay low (0.5 V).
  • Page 125 Remote Interface Reference SYSTem:ERRor? This command queries the power supply’s error queue. When the front-panel ERROR annunciator turns on, one or more command syntax or hardware errors have been detected. Up to 20 errors can be stored in the error queue. See “Error Messages”...
  • Page 126 Remote Interface Reference *RST This command resets the power supply to its power-on state as follows Command E3633A state E3634A State CURR 20 A CURR:STEP 0.32 mA (typical value) 0.13 mA (typical value) CURR: TRIG 20 A CURR: PROT 22.0 A 7.5 A CURR:PROT:STAT DISP...
  • Page 127 Remote Interface Reference *TST? This query performs a complete self-test of the power supply. Returns “0” if the self-test passes or “1” or any non-zero value if it fails. If the self-test fails, an error message is also generated with additional information on why the test failed.

  • Page 128: Calibration Commands

    Remote Interface Reference Calibration Commands “Calibration Overview” on page 90 for an overview of the calibration features of the power supply. For more detailed discussion of the calibration procedures, see the Service Guide. When you calibrate the power supply, you should not set the OVP and OCP to NOTE ON state in order to prevent OVP or OCP from tripping.
  • Page 129 Remote Interface Reference CALibration:CURRent:PROTection This command calibrates the overcurrent protection circuit of the power supply. It takes about 10 seconds to execute the command. The calibration must be unsecured and the output shorted before calibrating the overcurrent protection. The power supply automatically performs the calibration and stores the new overcurrent constant in nonvolatile memory.
  • Page 130 Remote Interface Reference CALibration:VOLTage[:DATA] <numeric value> This command can only be used after calibration is unsecured and the output state is ON. It enters a voltage value that you obtained by reading an external meter. You must first select the minimum calibration level ( CAL:VOLT:LEV MIN for the value being entered.

  • Page 131: Rs-232 Interface Commands

    Remote Interface Reference RS-232 Interface Commands Use the front-panel “I/O Config” key to select the baud rate, parity, and the number of data bits (see “Remote Interface Configuration” on page 79). SYSTem:LOCal This command places the power supply in the local mode during RS-232 operation.

  • Page 132: The Scpi Status Registers

    Remote Interface Reference 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 groups.

  • Page 133: Scpi Status System

    Remote Interface Reference SCPI Status System Keysight E3633A and E3634A User’s Guide...

  • Page 134: The Questionable Status Register

    Remote Interface Reference The questionable status register The Questionable Status register provides information about voltage and current regulation. Bit 0 is set when the voltage becomes unregulated, and bit 1 is set if the current becomes unregulated. For example if the power supply momentarily goes to constant current mode when the power supply is operating as a voltage source (constant voltage mode), bit 0 is set to indicate that the voltage output is not regulated.

  • Page 135: The Standard Event Register

    Remote Interface Reference 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 command is executed. Any or *OPC 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 136: The Status Byte Register

    Remote Interface Reference The standard event register is cleared when: – You execute the (clear status) command. *CLS – You query the event register using the (Event Status register) command. *ESR? 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 137: Using Service Request (Srq) And Serial Poll

    Remote Interface Reference The status byte summary register is cleared when: – You execute the (clear status) command. *CLS – Querying the Standard Event register ( command) will clear only bit 5 in *ESR? 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 138: Using *Stb? To Read The Status Byte

    Remote Interface Reference The IEEE-488 standard does not ensure synchronization between your bus CAUTION controller program and the instrument. Use the command to guarantee *OPC? that commands previously sent to the instrument have completed. Executing a serial poll before a , or other commands have completed can cause *RST *CLS...

  • Page 139: To Determine When A Command Sequence Is Completed

    Remote Interface Reference 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 (clear status) command. *CLS 3 Enable the “operation complete” bit (bit 0) in the Standard Event register by executing the command.

  • Page 140: Status Reporting Commands

    Remote Interface Reference Status Reporting Commands See diagram “SCPI Status System” on page 133 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 141 Remote Interface Reference STATus:QUEStionable? This command queries the Questionable Status event register. The power supply returns a decimal value which corresponds to the binary-weighted sum of all bits in the register. These bits are latched. Reading the event register clears it. STATus:QUEStionable:ENABle <enable value>...
  • Page 142 Remote Interface Reference *OPC? This command returns “1” to the output buffer after the command is executed. *PSC { 0|1 } (Power-on status clear.) This command clears the Status Byte and the Standard Event register enable masks when power is turned on ( ).

  • Page 143: An Introduction To The Scpi Language

    Remote Interface Reference 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” on page 107 for an introduction to the basic techniques used to program the power supply over the remote interface. SCPI commands are based on a hierarchical structure, also known as a tree system.

  • Page 144: Command Format Used In This Manual

    Remote Interface Reference Command format used in this manual The format used to show commands in this manual is shown below: CURRent {<current>|MINimum|MAXimum|UP|DOWN} The command syntax shows most commands (and some parameters) as a mixture of upper- and lower-case letters. The upper-case letters indicate the abbreviated spelling for the command.

  • Page 145: Command Separators

    Remote Interface Reference 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 146: Querying Parameter Settings

    Remote Interface Reference 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” You can query the value by executing: “CURR?”...

  • Page 147: Ieee-488.2 Common Commands

    Remote Interface Reference IEEE-488.2 common commands The IEEE-488.2 standard defines a set of common commands that perform functions like reset, self-test, and status operations. Common commands always begin with an asterisk ( * ), are four to five characters in length, and may include one or more parameters.
  • Page 148 Remote Interface Reference Boolean parameters Boolean parameters represent a single binary condition that is either true or false. For a false condition, the power supply will accept “OFF” or “0”. For a true condition, the power supply will accept “ON” or “1”. When you query a boolean setting, the power supply will always return “0”...

  • Page 149: Halting An Output In Progress

    Remote Interface Reference Halting an Output in Progress You can send a device clear at any time to stop an output in progress over the GPIB interface. The status registers, the error queue, and all configuration states are left unchanged when a device clear message is received. Device clear performs the following actions.

  • Page 150: Scpi Conformance Information

    Remote Interface Reference SCPI Conformance Information The Keysight E3633A and E3634A DC Power Supplies conform to the ‘1996.0’ 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.
  • Page 151 Remote Interface Reference :CURRent[:LEVel][:IMMediate]:STEP[:INCRement] {<numeric value>|DEFault} :CURRent[:LEVel][:IMMediate]:STEP[:INCRement]? {DEFault} :CURRent[:LEVel]:TRIGgered[:AMPLitude] {<current>|MIN|MAX} :CURRent[:LEVel]:TRIGgered[:AMPLitude]?[MIN|MAX] :CURRent:PROTection[:LEVel] {<current>|MIN|MAX} :CURRent:PROTection[:LEVel]? {MIN|MAX} :CURRent:PROTection:STATe {0|1|OFF|ON} :CURRent:PROTection:STATe? :CURRent:PROTection:TRIPped? :CURRent:PROTection:CLEar [SOURce] :VOLTage[:LEVel][:IMMediate][:AMPLitude] {<voltage>|MIN|MAX|UP|DOWN} :VOLTage[:LEVel][:IMMediate][:AMPLitude]?[MIN|MAX] :VOLTage[:LEVel][:IMMediate]:STEP[:INCRement] {<numeric value>|DEFault} :VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]? {DEFault} :VOLTage[:LEVel]:TRIGgered[:AMPLitude] {<voltage>|MIN|MAX} :VOLTage[:LEVel]:TRIGgered[:AMPLitude]?[MIN|MAX] :VOLTage:PROTection[:LEVel] {<voltage>|MIN|MAX} :VOLTage:PROTection[:LEVel]? {MIN|MAX} :VOLTage:PROTection:STATe {0|1|OFF|ON} :VOLTage:PROTection:STATe? :VOLTage:PROTection:TRIPped? :VOLTage:PROTection:CLEar :VOLTage:RANGe {P8V|P20V|LOW|HIGH} (For E3633A model) :VOLTage:RANGe {P25V|P50V|LOW|HIGH} (For E3634A model)
  • Page 152 Remote Interface Reference STATus :QUEStionable:CONDition? :QUEStionable[:EVENt]? :QUEStionable:ENABle <enable value> :QUEStionable:ENABle? SYSTem :BEEPer[:IMMediate] :ERRor? :VERSion TRIGger [:SEQuence]:DELay {<seconds>|MIN|MAX} [:SEQuence]:DELay? [:SEQuence]:SOURce{BUS|IMM} [:SEQuence]:SOURce Keysight E3633A and E3634A User’s Guide...

  • Page 153: Non-Scpi Commands

    Remote Interface Reference Device specific commands The following commands are device-specific to the Keysight E3633A and Keysight E3634A power supplies. They are not included in the ‘1996.0’ 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 154: Ieee-488 Conformance Information

    Remote Interface Reference IEEE-488 Conformance Information Dedicated Hardware Lines IEEE488 Common Commands Attention *CLS Interface Clear *ESE <enable value> Remote Enable *ESE? Service Request Enable *ESR? *IDN? Addressed Commands *OPC *OPC? Device Clear *PSC {0|1} End or Identify *PSC? Group Execute Trigger *RST Go To Local *SAV {1|2|3}...
  • Page 155 Keysight E3633A and E3634A DC Power Supplies User’s Guide Error Messages Error Messages Execution Errors Self-Test Errors Calibration Errors...

  • Page 156: Error Messages

    Error Messages Error Messages Errors are retrieved in first-in-first-out (FIFO) order. The first error returned is the first error that was stored. Errors are cleared as you read them over the remote interface. When you have read all errors from the queue, the ERROR annunciator turns off and the errors are cleared.

  • Page 157: Execution Errors

    Error Messages 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:STAT #ON Syntax error -102 Invalid syntax was found in the command string.
  • Page 158 Error Messages -109 Missing parameter Fewer parameters were received than expected for the command. You omitted one or more parameters that are required for this command. Example: APPL -112 Program mnemonic too long A command header was received which contained more than the maximum 12 characters allowed.
  • Page 159 Error Messages -123 Numeric overflow A numeric parameter was found whose exponent was larger than 32,000. Too many digits -124 A numeric parameter was found whose mantissa contained more than 255 digits, excluding leading zeros. -128 Numeric data not allowed A numeric parameter was received but a character string was expected.
  • Page 160 Error Messages -141 Invalid suffix A suffix was incorrectly specified for a numeric parameter. You may have misspelled the suffix. Example: TRIG:DEL 0.5 SECS Suffix too long -134 A suffix for a numeric parameter contained too many characters. Suffix not allowed -138 A suffix was received following a numeric parameter which does not accept a suffix.
  • Page 161 Error Messages -158 String data not allowed 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’ -160 to -168 Block data errors The power supply does not accept block data.
  • Page 162 Error Messages -223 Too much data A character string was received but could not be executed because the string length was more than 40 characters. This error can be generated by the command. CALibration:STRing Illegal parameter value -224 A discrete parameter was received which was not a valid choice for the command.
  • Page 163 Error Messages -430 Query DEADLOCKED A command was received which generates too much data to fit in the output buffer and the input buffer is also full. Command execution continues but all data is lost. Query UNTERMINATED after indefinite response -440 command must be the last query command within a command string.
  • Page 164 Error Messages Command not allowed in local You should always execute the command before sending other SYSTem:REMote commands over the RS-232 interface. Keysight E3633A and E3634A User’s Guide...

  • Page 165: Self-Test Errors

    Error Messages 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 Serial configuration readback failed...
  • Page 166 Error Messages System DAC test failed Hardware test failed Keysight E3633A and E3634A User’s Guide...

  • Page 167: Calibration Errors

    Error Messages 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 168 Error Messages Bad DAC cal data The specified DAC calibration values ( ) are out of range. CAL:VOLT CAL:CURR Note that the new calibration constants are not stored in the non-volatile memory. Bad readback cal data The specified readback calibration values ( ) are out of CAL:VOLT CAL:CURR...
  • Page 169 Error Messages Cal checksum failed, string data Cal checksum failed, store/recall data in location 0 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 Cal checksum failed, internal data...
  • Page 170 Error Messages THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E3633A and E3634A User’s Guide...
  • Page 171 Keysight E3633A and E3634A DC Power Supplies User’s Guide Application Programs Example Program for C and C++ Example Program for Excel 97 This chapter contains two application programs over the remote interface to help you develop programs for your own application. Chapter 4, “Remote Interface Reference”...

  • Page 172: Application Programs

    Application Programs Example Program for C and C++ The following C programming example shows you how to send and receive formatted I/O. This example programming shows you how to use the SCPI commands for the instrument with the VISA functionality and does include error trapping.
  • Page 173 Application Programs void main() double voltage; /* Value of voltage sent to power supply char Buffer[256]; /* String returned from power supply double current; /* Value of current output of power supply OpenPort(); /* Query the power supply id, read response and print it */ sprintf(Buffer,"*IDN?");...
  • Page 174 Application Programs void OpenPort() char GPIB_Address[3]; char COM_Address[2]; char VISA_address[40]; /* Complete VISA address sent to card */ if(bGPIB) strcpy(GPIB_Address,"5"); /* Select GPIB address between 0 to 30 */ else strcpy(COM_Address,"1"); /* Set the number to 2 for COM2 port if(bGPIB) /* For use with GPIB 7 address, use "GPIB::7::INSTR"...
  • Page 175 Application Programs void SendSCPI(char* pString) char* pdest; strcpy(commandString,pString); strcat(commandString,"\n"); ErrorStatus = viPrintf(power_supply,commandString); CheckError("Can’t Write to Driver"); if (bGPIB == 0) delay(1000); /* Unit is milliseconds pdest = strchr(commandString, ’?’); /* Search for query command if( pdest != NULL ) ErrorStatus = viScanf(power_supply,"%s",&ReadBuffer); CheckError("Can’t Read From Driver");...

  • Page 176: Example Program For Excel 97

    Application Programs Example Program for Excel 97 This section contains the example program written using Excel Macros (Visual Basic® for Applications) to control your Keysight E3633A or Keysight E3634A. With Excel you can take the value of a cell in a spread sheet, send it to the power supply, and then record the response on the worksheet.
  • Page 177 Application Programs To write an Excel macro you must first open a module in Excel. Go to the View menu, choose Toolbars, and then select Control Toolbox. The Control Toolbox dialog box appears. Select the Command button in the dialog box. Click cell A1 and drag across the cell B3.

  • Page 178: Diode Macro

    Application Programs Diode Macro '"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" ' This is the subroutine first executed. Modify this routine to suit ' your needs. To change the GPIB address, go to the module OpenPort, and ' change the variable GPIB_Address = "5” to the required GPIB address. ' To change the RS-232 port, go to the moudle OpenPort, and change the ' variable COM_Address = "1”...
  • Page 179 Application Programs '****************************************************************************** ' This routine send a SCPI command string to the GPIB port or RS-232 port. ' If the command contains a question mark, the response is read, and returned '****************************************************************************** Private Function SendSCPI(command As String) As string Dim commandString As String ' Command passed to power supply Dim ReturnString As String...

  • Page 180: Declaration For Windows 3.1

    Application Programs Declaration for Windows 3.1 '****************************************************************************** ' This routine requires the file VISA.dll. It typically resides in the ' c:\windows\system directory. Additional declations for VISA.DLL are usally in ' file visa.bas under c:\vxipnp\win31\include directory on your PC. This routine ' uses the VTL Library to send commands to an instrument.

  • Page 181: Tutorial

    Keysight E3633A and E3634A DC Power Supplies User’s Guide Tutorial Overview of Keysight E3633A and Keysight E3634A Operation Output Characteristics Connecting the Load Extending the Voltage and Current Range Remote Programming Reliability The Keysight E3633A and Keysight E3634A are high performance instruments capable of delivering clean DC power.

  • Page 182: Overview Of Keysight E3633A And Keysight E3634A Operation

    Tutorial Overview of Keysight E3633A and Keysight E3634A Operation The basic design technique, which has not changed over the years, consists of placing a control element in series with the rectifier and load device. Figure 7-1 shows a simplified schematic of a series regulated supply with the phase-controlled pre-regulator described as a power switch and the series element depicted as a variable resistor.
  • Page 183 Tutorial In terms of performance, a linear regulated supply has a very precise regulating properties and responds quickly to variations of the line and load. Hence, its line and load regulation and transient recovery time are superior to supplies using other regulation techniques.

  • Page 184: Output Characteristics

    Tutorial Output Characteristics An ideal constant-voltage power supply would have a zero output impedance at all frequencies. Thus, as shown in Figure 7-3, the voltage would remain perfectly constant in spite of any changes in output current demanded by the load. Figure 7-3 Ideal Constant Voltage Figure 7-4...
  • Page 185 Tutorial Figure 7-5 shows the operating modes of the output of the Keysight E3633A and Keysight E3634A power supplies. 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 186: Unregulated State

    Tutorial Unregulated state If the power supply should go into a mode of operation that is neither CV or CC, the power supply is unregulated. In this mode the output is not predictable. The unregulated condition may be the result of the ac line voltage below the specifications.
  • Page 187 Tutorial The output will also change due to changes in the load. As the load increases the output current will cause a small drop in the output voltage of the power supply due to the output impedance R. Any resistance in the connecting wire will add to this resistance and increase the voltage drop.

  • Page 188: Connecting The Load

    Tutorial Connecting the Load Output isolation The output of the power supply is isolated from chassis 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 ±60 Vdc when metal shorting bars without insulation are used to connect the (+) output to the (+) sense and the (-) output and the (-) sense terminals or ±240 Vdc of ground when metal shorting bars without insulation are...
  • Page 189 Tutorial To satisfy safety requirements, load wires must be heavy enough not to WARNING overheat while carrying the short-circuit output current of the power supply. Keysight E3633A and E3634A User’s Guide...

  • Page 190: Remote Voltage Sensing

    Tutorial Remote voltage sensing Normally, a power supply operating in the constant voltage mode achieves its optimum line and load regulations, its lowest output impedance, drift, and ripple and noise, and its fastest transient recovery performance at the power supply output terminals.

  • Page 191: Load Consideration

    Tutorial 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 192 Tutorial Reverse current loading An active load connected to the power supply may actually deliver a reverse current to the supply during a portion of its operating cycle. An external source cannot be allowed to pump current into the supply without risking loss of regulation and possible damage.

  • Page 193: Extending The Voltage And Current Range

    Tutorial Extending the Voltage and Current Range The power supply may be able to provide voltages and currents greater than its rated maximum outputs if the power-line voltage is at or above its nominal value. Operation can be extended up to 3% over the rated output without damage to the power supply, but performance cannot be guaranteed to meet specifications in this region.

  • Page 194: Remote Programming

    Tutorial 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 7-8 Speed of response - programming up (full load) The equivalent circuit and the nature of the output voltage waveform when the supply is being programmed upward are shown in...
  • Page 195 Tutorial 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 TR = , the shortest possible up-programming time. Figure 7-9 Speed of response - programming down Figure 7-9 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...

  • Page 196: Reliability

    Tutorial Reliability Reliability of electronic semiconductor equipment depends heavily on the temperature of the components. The lower the temperature of the components, the better the reliability. The Keysight E3633A and Keysight E3634A power supplies incorporate circuitry to reduce the internal power dissipation of the power supply and therefore reduce the internal heat of the power supply.

  • Page 197: Performance Specifications Supplemental Characteristics

    Keysight E3633A and E3634A DC Power Supplies User’s Guide Specifications Performance Specifications Supplemental Characteristics 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.

  • Page 198: Specifications

    Specifications Performance Specifications Table 8-1 Performance specifications Parameter Keysight E3633A Keysight E3634A Output Ratings Low Range 0 to +8 V/ 0 to 20 A 0 to 25 V/ 0 to 7 A (@ 0 °C- 40 °C) High Range 0 to +20V/ 0 to 10 A 0 to+50 V/ 0 to 4 A Voltage 0.05% + 10 mV Programming Accuracy...

  • Page 199: Transient Response Time

    Specifications Transient response time  Less than 50 sec for output to recover to within 15 mV following a change in output current from full load to half load or vice versa Command processing time Average time for output voltage to begin to change after receipt of digital data when the power supply is connected directly to the GPIB or RS-232 is less than 100 msec OVP and OCP accuracy, ±(% of output + offset)

  • Page 200: Supplemental Characteristics

    Specifications Supplemental Characteristics Table 8-2 Supplemental Characteristics Parameter Keysight E3633A Keysight E3634A Output Programming Range 0 to +8.24 V/ 0 to +25.75 V/ Low Range (maximum programmable values) 0 to 20.6 A 0 to 7.21 A 0 to +20.6 V/ 0 to +51.5V/ High Range 0 to 10.3 A...

  • Page 201: Stability, ±(% Of Output + Offset)

    Specifications Stability, ±(% of output + offset) Following a 30-minute warm-up, with the output in the ON state according to the operating mode (CC with load or CV), and with a change in the output over 8 hours under constant load, line, and ambient temperature. Voltage 0.02% + 1mV Current...

  • Page 202: Ac Input Ratings

    Specifications AC input ratings (selectable via rear panel selector 115 Vac ± 10%, 47 to 63 Hz opt 0E3 230 Vac ± 10%, 47 to 63 Hz opt 0E9 100 Vac ± 10%, 47 to 63 Hz Maximum input power 700 VA with full load Cooling Fan cooled.

  • Page 203: Weight

    Specifications Weight 9.5 kg (21 lb) Shipping 12 kg (26 lb) Weight (MY53xx6xxx) 11.4 kg (E3633A) 10.9 kg (E3634A) Shipping 13.9 kg (E3633A) 13.4 kg (E3634A) Figure 8-1 Dimensions of Keysight E3633A and E3634A power supplies Keysight E3633A and E3634A User’s Guide...
  • Page 204 Specifications THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight E3633A and E3634A User’s Guide...
  • Page 205 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 1998 - 2020 Edition 9, September 8, 2020 Printed in Malaysia *E3634-90001* E3634-90001 www.keysight.com...

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