Agilent Technologies E3632A User manual
Service Guide
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The Agilent E3632A is a high performance 120 watt-dual range DC power
supply with PIB 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
• Dual range
• Easy-to-use knob control settings
• Highly visible vacuum-fluorescent display meters
• Hghl accuracy and high resolution
• Remote voltage sensing
• Overvoltage and overcurrent protection
• Output on/off
• Excellent load and line regulation and low ripple and noise
• Operating states storage
• Portable, ruggedized case with non-skid feet
Flexible system features
• PIB (IEEE-488) and RS-232 interfaces are standard
• SCPI (Standard Commands for Programmable Instruments) compatibility
• I/O setup easily done from front-panel
• Software calibration, no internal adjustments required
Agilent E3632A
DC Power Supply
2
The Front Panel at a Glance
1 15V/7A range selection key
230V/4A range selection key
3Overvoltage protection key
4Overcurrent protection key
5Display limit key
6Recall operating state key
7Store operating state/Local key
8Error/Calibrate key
9I/O Configuration/Secure key
10 Output On/Off key
11 Control knob
12 Resolution selection keys
13 Voltage/current adjust selection key
3
1 15V/7A range selection key Selects the 15V/7A range and allows the full rated output
to 15V7A.
2 30V/4A range selection key Selects the 30V/4A range and allows the full rated output
to 30V/4A.
3 Overvoltage protection key Enables or disables the overvoltage protection function,
sets trip voltage level, and clears the overvoltage condition.
4 Overcurrent protection key Enables or disables the overcurrent protection function,
sets trip current level, and clears the overcurrent condition.
5 isplay limit key Shows voltage and current limit values on the display and allows
knob adjustment for setting limit values.
6 Recall operating state key Recalls a previously stored operating state from location
"1", "2", or "3".
7 Store operating state / Local key1 Stores an operating state in location "1", "2", or
"3" / or returns the power supply to local mode from remote interface mode.
8 Error / Calibrate key2 Displays error codes generated during operations, self-test
and calibration / or enables calibration mode (the power supply must be unsecured
before performing calibration).
9 I/O Configuration / Secure key3 Configures the power supply for remote interfaces
/ or secure or unsecure the power supply for calibration.
10 Output On/Off key Enables or disables the power supply outputs. This key toggles
between on and off.
11 Control knob Increases or decreases the value of the blinking digit by turning
clockwise or counter clockwise.
12 Resolution selection keys Move the blinking digit to the right or left.
13 Voltage/current adjust selection key Selects the knob control function for voltage
or current adjustment.
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.
4
Front-Panel Voltage and Current Limit Settings
You can set the voltage and current limit values from the front panel using the
following method.
1Select the desired range using the range selection keys after turning on the power
supply.
2Press the key to show the limit values on the display.
3Move the blinking digit to the appropriate position using the resolution selection keys
and change the blinking digit value to the desired vltage limit by turning the control
knob. If the display limit times out, press the key again.
4Set the knob to current control mode using the voltage/current adjust selection key.
5Move the blinking digit to the appropriate position using the resolution selection keys
and change the blinking digit value to the desired current limit by turning the control
knob.
6Press 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 or the display will go to the monitor mode immediately by pressing
the key again.
Note All front panel keys and controls can be disabled with remote interface
commands. The Agilent E3632A 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 voltage and current limit value.
Display Limit
Display Limit
Output On/Off
Output On/Off
5
Display Annunciators
Adrs Power supply is addressed to listen or talk over a remote interface.
Rmt Power supply is in remote interface mode.
15V Shows the 15V/7A range is selected.
30V Shows the 30V/4A range is selected.
OVP The overvoltage protection function is enabled when the annunciator
turns on or the overvoltage protection circuit has caused the power
supply to shutdown when the annunciator blinks.
OCP The overcurrent protection function is enabled when the annunciator
turns on or the overcurrent protection circuit has caused the power
supply to shutdown when the annunciator blinks.
CAL The power supply is in calibration mode.
Limit The display shows the limit values of voltage and current.
ERROR Hardwareorremoteinterfacecommanderrorsaredetectedandtheerror
bit has not been cleared.
OFF The output of the power supply is disabled (See
page 52 for more
information
).
Unreg The output of the power supply is unregulated (output is neither CV
nor CC).
CV The power supply is in constant voltage mode.
CC The power supply is in constant current mode.
To review the display annunciators, hold down key as you
turn on the power supply.
Display Limit
6
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
7
In This Book
Specifications Chapter 1 lists the power supply’s specifications and
describes how to interpret these specifications.
Quick Start Chapter 2 prepares the power supply for use and helps you get
familiar with the front-panel features.
Calibration Procedures Chapter 3 provides performance verification and
calibration procedures.
Theory of Operation Chapter 4 describes block and circuit level theory
related to the operation of the power supply.
Service Chapter 5 provides guidelines for returning your power supply to
Agilent Technologies for servicing, or for servicing it yourself.
Replaceable Parts Chapter 6 contains a detailed parts list of the power
supply.
Backdatin Chapter 7 describes the difference between this manual and
older issues of this manual.
Schematics Chapter 8 contains the power supply's schematics, disassembly
drawings, and component locator drawings.
f you have questions relating to the operation of the power supply, call
1-800-452-4844 in the United States, or contact your nearest Agilent
Technologies Sales Office.
f your Agilent E3632A fails within three years of purchase, Agilent will
repair or replace it free of charge. Call 1-800-258-5165 ("Express
Exchange") in the United States, or contact your nearest Agilent
Technologies Sales Office.
8
9
Contents
Contents
Chapter 1 Specifications
Performance Specifications 15
Supplemental Characteristics 17
Chapter 2 Quick Start
To Prepare the Power Supply for Use 23
To Check the Rated Voltages of the Power Supply 25
To Check the Rated Currents of the Power Supply 26
To Use the Power Supply in Constant Voltage Mode 28
To Use the Power Supply in Constant Current Mode 30
To Store and Recall the Instrument State 32
To Program Overvoltage Protection 34
Setting the OVP Level and Enable the OVP Circuit 34
Checking OVP Operation 35
Clearing the Overvoltage Condition 35
To Program Overcurrent Protection 37
Setting the OCP Level and Enable the OCP Circuit 37
Checking OCP Operation 38
Clearing the Overcurrent Condition 38
To Rack Mount the Power Supply 39
Chapter 3 Calibration Procedures
Agilent Technologies Calibration Services 43
Calibration Interval 43
Automating Calibration Procedures 44
Recommended Test Equipment 44
Test Considerations 45
Performance Verification Tests 46
Self-Test 46
Performance Verification Tests 46
Measurement Techniques 47
Setup for Most Tests 47
Electronic Load 48
Current-Monitoring Resistor 48
Programming 48
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