Agilent Technologies E3631A User 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.

Agilent E3631A

Triple Output

DC Power Supply

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

•Easy-to-use knob control for voltage and current settings

•Highly visible vacuum-fluorescent display for voltage and current meters

•Tracking operation for ±25V outputs

•Excellent load and line regulation and low ripple and noise

•Operating states storage

•Portable, ruggedized case with non-skid feet

Flexible system features

•GPIB (IEEE-488) and RS-232 interfaces are standard

•SCPI (Standard Commands for Programmable Instruments) compatibility

•I/O setup easily done from front-panel

Agilent E3631A

Triple Output

DC Power Supply

The Front Panel at a Glance

1 Meter and adjust selection keys

2Tracking enable/disable key

3Display limit key

4Recall operating state key

5Store operating state/Local key

6Error/Calibrate key

7 I/O Configuration / Secure key

8 Output On/Off key

9Control knob

10 Resolution selection keys

11 Voltage/current adjust selection key

1Meter 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.

2Tracking enable / disable key Enables / disables the track mode of ±25V supplies.

3Display limit key Shows the voltage and current limit values on the display and

allows knob adjustment for setting limit values.

4Recall operating state key Recalls a previously stored operating state from

location “1”, “2”, or “3”.

5Store operating state / Local key1Stores an operating state in location “1”, “2”,

or “3” / or returns the power supply to local mode from remote interface mode.

6Error / Calibrate key2Displays error codes generated during operations, self-test

and calibration / or enables calibration mode (the power supply must be unsecured

before performing calibration).

7I/O Configuration / Secure key3Configures the power supply for remote

interfaces / or secure and unsecure the power supply for calibration.

8Output On/Off key Enables or disables all three power supply outputs. This key

toggles between two states.

9Control knob Increases or decreases the value of the blinking digit by turning

clockwise or counter clockwise.

10 Resolution selection keys Move the flashing digit to the right or left.

11 Voltage/current adjust selection key Selects the knob function to voltage control or

current control.

1The key can be used as the “Local” key when the power supply is in the remote

interface mode.

2You can enable the “calibration mode” by holding down this key when you

turn on the power supply.

3You can use it as the “Secure” or “Unsecure” key when the power supply is

in the calibration mode.

Front-Panel Voltage and Current Limit Settings

You can set the voltage and current limit values from the front panel

using the following method.

1Press the key after turning on the power supply.

2Set the knob to the voltage control mode or current control mode using the

voltage/current adjust selection key.

3Move the blinking digit to the appropriate position using the resolution selection keys.

4Change the blinking digit to the desired value using the control knob.

5Press the key to enable the output. After about 5 seconds, the

display will go to the output monitor mode automatically to display the voltage

and current at the output.

Note 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.

Use the voltage/current adjust selection key, the resolution selection keys, and

the control knob to change the monitoring or limiting value of voltage or current.

Display Limit

Output On/Off

Display Annunciators

Adrs Power supply is addressed to listen or talk over a remote interface.

Rmt Power supply is in remote interface mode.

+6V 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.

-25V Displays the output voltage and current for -25V supply. Knob is active for

-25V supply.

CAL power supply is in calibration mode.

Track The outputs of +25V and -25V supplies are in track mode.

Limit The display shows the voltage and current limit value of a selected supply.

ERROR Hardware or remote interface command errors are detected and also the

error bit has not been cleared.

OFF The three outputs of the power supply are disabled.

Unreg The displayed output is unregulated (output is neither CV nor CC).

CV The displayed output is in constant-voltage mode.

CC The displayed output is in constant-current mode.

To review the display annunciators, hold down key as you

turn on the power supply.

Display Limit

The Rear Panel at a Glance

Use the front-panel key to:

•Select the GPIB or RS-232 interface (see chapter 3).

•Set the GPIB bus address (see chapter 3).

•Set the RS-232 baud rate and parity (see chapter 3).

1Power-line voltage setting

2Power-line fuse-holder assembly

3AC inlet

4Power-line module

5GPIB (IEEE-488) interface connector

6RS-232 interface connector

I/O Config

In This Book

General Information Chapter 1 contains a general description of your power supply.

This chapter also provides instructions for checking your

power supply, connecting to ac power, and selecting power-line voltage.

Initial Operation Chapter 2 ensures that the power supply develops its

rated outputs and properly responds to operation from the front panel.

Front-Panel Operation Chapter 3 describes in detail the use of

front-panel keys and how they are used to operate the power supply from

the front panel. This chapter also shows how to configure the power supply for the

remote interface and gives a brief introduction to the calibration features.

Remote Interface Reference Chapter 4 contains reference information

to help you program the power supply over the remote interface. This

chapter also explains how to program for status reporting.

Error Messages Chapter 5 lists the error messages that may appear as you are

working with the power supply. Each listing contains information to help you diagnose

and solve the problem.

Application Programs Chapter 6 contains some remote interface applications to

help you develop programs for your application.

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.

If you have questions relating to the operation of the power supply, call

1-800-829-4444 in the United States, or contact your nearest Agilent

Technologies Sales Office.

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

• –20 °C to 70 °C

Humidity Up to 80% RH

Altitude Up to 2000 m

Installation category II

Pollution degree 2

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

Note If you are unable to search for the respective DoC, please contact your local Agilent

representative.

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