Agilent Technologies Video Gaming Accessories E3632A User manual

Service Guide
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The Agilent E3632A is a high performance 120 watt-dual range 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
• 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
• GPIB (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
The Front Panel at a Glance
1
2
3
4
5
6
7
2
15V/7A range selection key
30V/4A range selection key
Overvoltage protection key
Overcurrent protection key
Display limit key
Recall operating state key
Store operating state/Local key
8
9
10
11
12
13
Error/Calibrate key
I/O Configuration/Secure key
Output On/Off key
Control knob
Resolution selection keys
Voltage/current adjust selection key
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 Display 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 key 1 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 key 2 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 key 3 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.
3
You can use it as the "Secure" or "Unsecure" key when the power supply is in the
calibration mode.
3
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 value.
1 Select the desired range using the range selection keys after turning on the power
supply.
2 Press the Display Limit key to show the limit values on the display.
3 Move 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 Display Limit key again.
4 Set the knob to current control mode using the voltage/current adjust selection key.
5 Move 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.
6 Press the Output On/Off 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 Output On/Off 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.
4
Display Annunciators
Adrs
Rmt
15V
30V
OVP
OCP
CAL
Limit
ERROR
OFF
Unreg
CV
CC
Power supply is addressed to listen or talk over a remote interface.
Power supply is in remote interface mode.
Shows the 15V/7A range is selected.
Shows the 30V/4A range is selected.
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.
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.
The power supply is in calibration mode.
The display shows the limit values of voltage and current.
Hardware or remote interface command errors are detected and the error
bit has not been cleared.
The output of the power supply is disabled (See page 52 for more
information).
The output of the power supply is unregulated (output is neither CV
nor CC).
The power supply is in constant voltage mode.
The power supply is in constant current mode.
To review the display annunciators, hold down Display Limit key as you
turn on the power supply.
5
The Rear Panel at a Glance
1 Power-line voltage setting
2 Power-line fuse-holder assembly
3 AC inlet
4 Power-line module
5 GPIB (IEEE-488) interface connector
6 RS-232 interface connector
Use the front-panel I/O Config 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).
6
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.
Backdating 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.
If 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.
If 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.
7
8
Contents
Chapter 1 Specifications
Performance Specifications 15
Supplemental Characteristics 17
Chapter 2 Quick Start
Contents
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
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
43
9
Contents
Chapter 3 Calibration Procedures (continued)
Contents
Constant Voltage (CV) Verifications 49
Constant Voltage Test Setup 49
Voltage Programming and Readback Accuracy 49
CV Load Regulation 50
CV Line Regulation 50
Normal Mode Voltage Noise (CV Ripple and Noise) 51
Load Transient Response Time 52
Constant Current (CC) Verifications 53
Constant Current Test Setup 53
Current Programming and Readback Accuracy 53
CC Load Regulation 54
CC Line Regulation 55
Normal Mode Current Noise (CC Ripple and Noise) 55
Common Mode Current Noise 56
Performance Test Record for Agilent Technologies E3632A 57
CV Performance Test Record 57
CC Performance Test Record 57
Calibration Security Code 58
To Unsecure the Power Supply for Calibration 59
To Unsecure the Power Supply Without the Security Code 60
Calibration Count 61
Calibration Message 61
General Calibration/Adjustment Procedure 62
Voltage and OVP Calibration 63
Current and OCP Calibration 65
Aborting a Calibration in Progress 68
Calibration Record for Agilent Technologies E3632A 69
Error Messages 70
Calibration Program 72
Chapter 4 Theory of Operation
Block Diagram Overview 79
AC Input and Bias Supplies 81
Floating Logic 82
D-to-A Converter 84
A-to-D Converter 85
Power Mesh and Control 86
Earth-Referenced Logic 88
Front Panel 88
10
Contents
Chapter 5 Service
Operating Checklist 91
Types of Service Available 92
Repacking for Shipment 93
Electrostatic Discharge (ESD) Precautions 94
Surface Mount Repair 94
To Replace the Power-Line Fuse 94
To Disconnect the Output Using an External Relay
Troubleshooting Hints 96
Self-Test Procedures 98
95
Chapter 6 Replaceable Parts
Contents
Replaceable Parts 102
To Order Replaceable Parts 102
Backdating and Part Changes 102
E3632-60002 Main PC Assembly 103
E3632-60004 Front-Panel Display PC Assembly
E3632-60005 Front Frame Assembly 112
E3632A Power Supply Assembly 112
Manufacturer’s List 113
111
Chapter 7 Backdating
Chapter 8
Mechanical Disassembly 103
Component Locator 120
Power Circuit and Protection Circuit Schematic
Bias Supply Schematic 122
ADC and DAC System Schematic 123
Floating Logic Schematic 124
Earth-Referenced Logic Schematic 125
Display and Keyboard Schematic 126
121
11
Contents
Contents
12
1
1
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. Chapter 3 "Calibration
Procedures" contains procedures for verifying the performance specifications.
14
Chapter 1 Specifications
Performance Specifications
1
Performance Specifications
Output Ratings (@ 0°C - 40°C)
Low range
High range
0 to +15 V/0 to 7 A
0 to +30 V/0 to 4 A
Programming Accuracy [1] 12 months (@ 25°C ± 5°C), ±(% of output + offset)
Voltage
Current
0.05% + 10 mV
0.2% + 10 mA
Readback Accuracy [1] 12 months (over GPIB and RS-232 or front panel with respect
to actual output @ 25°C ± 5°C), ±(% of output + offset)
Voltage
Current
0.05% + 5 mV
0.15 % + 5 mA
Ripple and Noise (with outputs ungrounded, or with either output terminal grounded,
20 Hz to 20 MHz)
Normal mode voltage
Current
Common mode current
<0.35 mV rms and 2 mV p-p
<2 mA rms
<1.5 mA rms
Load Regulation, ±(% of output + offset)
Change in output voltage or current for any load change within ratings with remote
sensing connected.
Voltage
Current
<0.01% + 2 mV
<0.01% + 250 mA
Line Regulation, ±(% of output + offset)
Change in output voltage and current for any line change within ratings
Voltage
Current
[1] Accuracy
<0.01% + 2 mV
<0.01% + 250 mA
specifications are after an 1-hour warm-up with no load and calibration at
25°C
15
Chapter 1 Specifications
Performance Specifications
Programming Resolution
Voltage
Current
1 mV
0.5 mA
Readback Resolution
Voltage
Current
0.5 mV
0.1 mA
Front Panel Resolution
Voltage
Current
1 mV
1 mA
Transient Response Time
Less than 50 msec for output 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)
OVP
OCP
0.5% + 0.5 V
0.5% + 0.5 A
Activation time : Average time for output to start to drop after OVP or OCP condition
occurs.
OVP
OCP
16
<1.5 msec when the trip voltage is equal or greater than 3 V
<10 msec when the trip voltage is less than 3 V
<10 msec
Chapter 1 Specifications
Supplemental Characteristics
1
Supplemental Characteristics
Output Programming Range (maximum programmable values)
Low range
High range
OVP
OCP
0 to 15.45 V/0 to 7.21 A
0 to 30.9 V/0 to 4.12 A
1 V to 32 V
0 A 7.5 A
Remote Sensing Capability
Voltage drop
Load regulation
Load voltage
Up to 1 V per each lead
Add 5 mV to spec for each 1-volt change in the + output lead
due to load current changes.
Subtract voltage drop in load leads from specified output
voltage atiing.
Temperature Coefficient, ±(% of output + offset)
Maximum change in output/readback per °C after a 30-minute warm-up
Voltage
Current
0.01% + 3 mV
0.02% + 3 mA
Stability, ±(% of output + offset)
Following a 1 hour warm-up, change in output over 8 hours under constant load, line,
and ambient temperature
Voltage
Current
0.02% + 1 mV
0.1% + 1 mA
Voltage Programming Speed
Maximum time required for output voltage to settle within 1% of its total excursion (for
resistive load). Excludes command processing time.
Up
Down
Full load
No load
50 msec
45 msec
20 msec
400 msec
17
Chapter 1 Specifications
Supplemental Characteristics
Output Terminal Isolation (maximum, from chassis ground)
±60 Vdc when connecting shorting conductors without insulation to the (+) output to
the (+) sense and the (-) output and the (-) sense terminals.
±240 Vdc when connecting insulated shorting conductors to the (+) output to the (+)
sense and the (-) output and the (-) sene terminals.
AC Input Ratings (selectable via rear panel selector)
std
opt 0E3
opt 0E9
115 Vac ± 10%, 47 to 63 Hz
230 Vac ± 10%, 47 to 63 Hz
100 Vac ± 10%, 47 to 63 Hz
Maximum Input Power
500 VA with full load
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. If the output control is set to 1 V or higher, there
is no overshoot.
Programming Language
SCPI (Standard Commands for Programmable Instruments)
State Storage Memory
Three (3) user-configurable stored states
Recommended Calibration Interval
1 year
18
Chapter 1 Specifications
Supplemental Characteristics
1
Dimensions*
213 mmW x 133 mmH x 348 mmD (8.4 x 5.2 x 13.7 in)
*See below for detailed information.
Weight
Net
Shipping
9.5 kg (21 lb)
12 kg (26 lb)
Figure 1-1. Dimensions of Agilent E3632A Power Supply
19
Chapter 1 Specifications
Supplemental Characteristics
20
2
2
Quick Start
Quick Start
One of the first things you will want to do with your power supply is to become
acquainted with its front panel. Written procedures in this chapter prepare the
power supply for use and familiarize you with most front-panel operations.
• 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. When in this mode, the frontpanel keys can be used. When the power supply is in remote operation mode,
you can return to front-panel operation mode at any time by pressing the
Local key if you did not previously send the front-panel lockout command.
A change between front-panel and remote operation modes will not result
in a change in the output parameters.
• The power supply has two output ranges of 15V/7A or 30V/4A. This feature
allows more voltage at a lower current or more current at a lower voltage.
The desired output range is selected from the front panel or over the remote
interfaces. The 15V or 30V annunciator indicates the presently selected
range.
• When you press the Display Limit key (the Limit annunciator blinks), the
display of the power supply goes to the limit mode and the present limit
values will be displayed. In this mode, you can also observe the change of
the limit values when adjusting the knob. If you press the Display Limit
key again or let the display time-out after several seconds, the power supply
will return the display to the meter mode (the Limit annunciator turns off).
In this mode, the actual output voltage and current will be displayed.
• The outputs of the power supply can be enabled or disabled from the front
panel using the Output On/Off key. When the output is off, the OFF
annunciator turns on and the output is disabled.
• 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 15V/7A range and controlled
from the front panel, then the CV and +15V annunciators will turn on. If,
however, the power supply is remotely controlled, the Rmt annunciator will
also turn on, and when the power supply is being addressed over GPIB
interface, the Adrs annunciator will turn on. see “Display Annunciators”, on
page 6 for more information.
22
Chapter 2 Quick Start
To Prepare the Power Supply for Use
To Prepare the Power Supply for Use
The following steps help you verify that the power supply is ready for use.
2
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 Agilent Technologies Sales Office.
One appropriate power cord for your location.
One User's Guide.
This Service Guide.
Certificate of Calibration.
2 Verify that the correct power-line voltage setting is selected and that
the correct power-line fuse is installed.
The line voltage is set to 100, 115 or 230 Vac from the factory according to the
input power option selected when you ordered the power supply. Change the
voltage setting if it is not correct for your location (see the next page for
detailed information). For 100 or 115 Vac operation, the correct fuse is 4 AT
(Agilent part number 2110-0996) and for 230 Vac operation, the correct fuse is
2.5 AT (Agilent part number 2110-0999).
Power
3 Connect the power cord and turn on the power supply.
A power-on self-test occurs automatically when you turn on the power supply.
The front-panel display will light up while the power supply performs its
power-on self- test. After performing the self-test, the power supply will go into
the power-on / reset state; all outputs are disabled (the OFF annunciator turns
on); the 15V/7A rage is selected (the +15V annunciator turns on); the knob is
selected for voltage control. Notice that the OVP and OCP annunciators also
turn on.
Output On/Off
4 Enable the outputs.
Press the Output On/Off key to enable the outputs. The OFF annunciator
turns off and the 15V, 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.
23
Chapter 2 Quick Start
To Prepare the Power Supply for Use
1 Remove the power cord. Remove
the fuse-holder assembly with a flatblade screwdriver from the rear
2 Install the corect line fuse. Remove
the power-line voltage selector
from the power-line module.
100 or 115 Vac, 4 AT fuse
230 Vac, 2.5 AT fuse
3 Rotate the power-line voltage
selector until the correct voltage
appears.
4 Replace the power-line voltage
selector and the fuse-holder
assembly in the rear panel.
100, 115 or 230 Vac
Install the correct fuse and verify that the correct line voltage appears in the
window.
24
Chapter 2 Quick Start
To Check the Rated Voltages of the Power Supply
To Check the Rated Voltages of the Power Supply
The following procedures check to ensure that the power supply develops its
rated voltage outputs with no load and properly responds to operation from
the front panel.
For each step, use the keys shown on the left margins.
Power
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); the 15V/7A range is selected (the +15V
annunciator turns on); and the knob is selected for voltage control.
Output On/Off
2 Enable the outputs.
The OFF annunciator turns off and the 15V, 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.
3 Check that the front-panel voltmeter properly responds to knob
control.
Turn the knob clockwise or counter clockwise to check that the voltmeter
responds to knob control and the ammeter indicates nearly zero.
4 Ensure that the voltage can be adjusted from zero to the maximum
1
rated value.
Adjust the knob until the voltmeter indicates 0 volts and then adjust the knob
until the voltmeter indicates 15.0 volts.
1You can use the resolution selection keys to move the blinking digit to the right or
left when setting the voltage.
25
2
Chapter 2 Quick Start
To Check the Rated Currents of the Power Supply
To Check the Rated Currents of the Power Supply
The following procedures check to ensure that the power supply develops its
rated current outputs with a short and properly responds to operation from
the front panel.
For each step, use the keys shown on the left margin.
Power
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); the 15V/7A range is selected (the 15V
annunciator turns on); and the knob is selected for voltage control.
2 Connect a short across (+) and (-) output terminals with an insulated
test lead.
Output On/Off
3 Enable the outputs.
The OFF annunciator turns off and the 15V, OVP and OCP annunciator turns
on. The CV or CC annunciator is lit depending on the resistance of the test lead.
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.
Display Limit
4 Adjust the voltage limit value to 1.0 volt.
Set the display to the limit mode (the Lmt annunciator will be blinking). Adjust
the voltage limit to 1.0 volt to assure CC operation. The CC annunciator will
light.
Volt/Curr
5 Check that the front-panel ammeter properly responds to knob control.
Set the knob to the current control, and turn the knob clockwise or counter
clockwise when the display is in the meter mode (the Lmt annunciator is off).
Check that the ammeter responds to knob control and the voltmeter indicates
nearly zero (actually, the voltmeter will show the voltage drop caused by the
test lead).
26
Chapter 2 Quick Start
To Check the Rated Currents of the Power Supply
6 Ensure that the current can be adjusted from zero to the maximum
1
rated value.
Adjust the knob until the ammeter indicates 0 amps and then until the ammeter
indicates 7.0 amps.
Note
If an error has been detected during the output checkout procedures, the ERROR
annunciator will turn on. See "Error Messages" for more information, starting on
page 121 in chapter 5 of the User's Guide.
1You
can use the resolution selection keys to move the blinking digit to the
right or left when setting the current.
27
2
Chapter 2 Quick Start
To Use the Power Supply in Constant Voltage Mode
To Use the Power Supply in Constant Voltage Mode
To set up the power supply for constant voltage (CV) operation, proceed as
follows.
For each step, use the keys shown on the left margin.
1 Connect a load to the desired output terminals.
With power-off, connect a load to the desired output terminals.
Power
2 Turn on the power supply.
The power supply will go into the power-on / reset state; output is disabled (the
OFF annunciator turns on); the 15V/7A range is selected (the 15V annunciator
turns on); and the knob is selected for voltage control.
To operate the power supply in the 30V/4A range, press the 30V,4A key before
proceeding to the next step. The 30V annunciator turns on.
Display Limit
3 Set the display for the limit mode.
Notice that the Limit annunciator blinks, indicating that the display is in the
limit mode. When the display is in the limit mode, you can see the voltage and
current limit values of the power supply.
In constant voltage mode, the voltage values between meter mode and
limit mode are the same, but the current values are not. Moreover if the
display is in the meter mode, you cannot see the change of current limit
value when adjusting the knob. We recommend that you should set the
display to "limit" mode to see the change of current limit value in
constant voltage mode whenever adjusting the knob.
Volt/Curr
4 Adjust the knob for the desired current limit.
1
Check that the Lmt annunciator still blinks. Set the knob for current control.
The second digit of 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. Adjust the knob to the desired current limit.
1
You can use the resolution selection keys to move the blinking digit to the right or
left when setting current.
28
Chapter 2 Quick Start
To Use the Power Supply in Constant Voltage Mode
Volt/Curr
5 Adjust the knob for the desired output voltage.
1
Check that the Limit annunciator still blinks. Set the knob for voltage control.
The second digit of the voltmeter will be blinking. Change the blinking digit
using the resolution selection keys and adjust the knob to the desired output
voltage.
Display Limit
6 Return to the meter mode.
Press the Display Limit key or let the display time-out after several seconds
to return to the meter mode. Notice that the Limit annunciator turns off and
the display shows "OUTPUT OFF" message.
Output On/Off
7 Enable the outputs
The OFF annunciator turns off and the 15V or 30V, OVP, OCP, and CV
annunciators are lit. Notice that the display is in the meter mode. In the meter
mode, the display shows the actual output voltage and current.
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
CV annunciator is lit. If the CC annunciator is lit, choose a higher current limit.
Note
During actual CV operation, if a load change causes the current limit to be exceeded,
the power supply will automatically crossover to constant current mode at the preset
current limit and the output voltage will drop proportionately.
1You can use the resolution selection keys to move the blinking digit to the right or
left when setting voltage.
29
2
Chapter 2 Quick Start
To Use the Power Supply in Constant Current Mode
To Use the Power Supply in Constant Current Mode
To set up the power supply for constant current (CC) operation, proceed as
follows.
For each step, use the keys shown on the left margin.
1 Connect a load to the output terminals.
With power-off, connect a load to the (+) and (-) output terminals.
Power
2 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); the 15V/7A range is selected (the 15V
annunciator turns on); and the knob is selected for voltage control.
To operate the power supply in the 30V4A range, press 30V,4A key before
proceeding to the next step. The 30V annunciator turns on.
Display Limit
3 Set the display for the limit mode.
Notice that the Limit annunciator blinks, indicating that the display is in the
limit mode. When the display is in the limit mode, you can see the voltage and
current limit values of the selected supply.
In constant current mode, the current values between meter mode and
limit mode are the same, but the voltage values are not. Moreover if the
display is in the meter mode, you cannot see the change of voltage limit
value when adjusting the knob. We recommend that you should set the
display to "limit" mode to see the change of voltage limit value in
constant current mode whenever adjusting the knob.
4 Adjust the knob for the desired voltage limit.
1
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 reolution keys and the blinking digit can be adjusted
by turning the knob. Adjust the knob for the desired voltage limit.
1
You can use the resolution selection keys to move the blinking digit to the right or
left when setting the voltage.
30
Chapter 2 Quick Start
To Use the Power Supply in Constant Current Mode
Volt/Curr
5 Adjust the knob for the desired output current.
1
Check that the Limit annunciator still blinks. Set the knob for current control.
The second digit of the ammeter will be blinking. Change the blinking digit
using the resolution selection keys and adjust adjust the knob to the desired
output current.
Display Limit
6 Return to the meter mode.
Press the Display Limit key or let the display time-out after several seconds
to return the meter mode. Notice that the Limit annunciator turns off and the
display shows "OUTPUT OFF" message.
Output On/Off
7 Enable the outputs.
The OFF annunciator turns off and the 15V or 30V, OVP, OCP, and CC
annunciators are lit. Notice that the display is in the meter mode. In the meter
mode, the display shows the actual output voltage and current.
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
CC annunciator is lit. If the CV annunciator is lit, choose a higher voltage limit.
Note
During actual CC operation, if a load change causes the voltage limit to be exceeded,
the power supply will automatically crossover to constant voltage mode at the preset
voltage limit and the output current will drop proportionately.
1You can use the resolution selection keys to move the blinking digit to the right or
left when setting the voltage and current.
31
2
Chapter 2 Quick Start
To Store and Recall the Instrument State
To Store and Recall the Instrument State
You can store up to three different operating states in non-volatile memory.
This also enables you to recall the entire instrument with just a few key presses
from the front panel.
The memory locations are supplied with the reset state from the factory for
front panel operation. Refer to the description of *RST command, starting on
page 94 in the User’s Guide for more information.
The following steps show you how to store and recall an operating state.
1 Set up the power supply for the desired operating state.
The storage feature "remembers" the output range selection, the limit value
settings of voltage and current, output on/off state , OVP and OCP on/off state,
and OVP and OCP trip levels.
Store
2 Turn on the storage mode.
Three memory locations (numbered 1, 2, and 3) are available to store the
operating states. The operating states are stored in non-volatile memory and
are remembered when being recalled.
Store
1
This message appears on the display for approximately 3 seconds.
3 Store the operating state in memory location "3".
Turn the knob to the right to specify the memory location 3.
Store
3
To cancel the store operation, let the display time-out after about 3 seconds
or press any other function key except the Store key. The power supply
returns to the normal operating mode and to the function pressed.
32
Chapter 2 Quick Start
To Store and Recall the Instrument State
Store
4 Save the operating state.
The operating state is now stored. To recall the stored state, go to the following
steps.
2
done
This message appears on the display for approximately 1 second.
Recall
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.
6 Recall the stored operating state.
Turn the knob to the right to change the displayed storage location to "3".
recall
3
If this setting is not followed within 3 seconds with a Recall key stroke, the
power supply returns to normal operating mode and will not recall the
instrument state 3 from memory.
Recall
7 Restore the operating state.
The power supply should now be configured in the same state as when you
stored the state on the previous steps.
done
This message appears on the display for approximately 1 second.
33
Chapter 2 Quick Start
To Program Overvoltage Protection
To Program 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 progamming the output to 1 volt when
the trip level is set to less than 3 volts.
The following steps show how to set the OVP trip level, how to check OVP
operation and how to clear overvoltage condition.
Setting the OVP Level and Enable the OVP Circuit
Power
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); the 15V/7A range is selected (the 15V
annunciator turns on); and the knob is selected for voltage control.
Output On/Off
2 Enable the output.
The OFF annunciator turns off and the display will go to the meter mode.
Over Voltage
3 Enter the OVP menu and set the trip level.
level 32.0 v
You will see the above message on the display when you enter the OVP menu.
Adjust the knob for the desired OVP trip level.
Note
Over Voltage
You cannot set the trip levels to lower than 1.0 volt.
4 Enable the OVP circuit.
ovp on
You will see the above message after pressing the Over Voltage key.
Over Voltage
34
Chapter 2 Quick Start
To Program Overvoltage Protection
5 Exit the OVP menu.
changed
The "CHANGED" message is displayed for a second to show that the new OVP
trip level is now in effect. If the OVP settings are not changed, "NO CHANGE"
will be displayed. The power supply will exit the OVP menu and the display
will return to the meter mode. Check that the OVP annunciator turns on.
Checking OVP Operation
To check OVP operation, raise the output voltage to near the trip point. Then
very gradually increase the output by turning the knob until the OVP circuit
trips. This will cause the power supply output to drop to near zero. The OVP
annunciator is blinking and the CC annunicator turns on. The "OVP TRIPPED"
message also appears on the display.
Clearing the Overvoltage Condition
When the OVP circuit trips (the "OVP TRIPPED" message is shown on the
display), the OVP annunicator blinks. When it was caused by external voltage
source such as a battery, disconnect it first. The following steps show how to
clear the overvoltage conditions and get back to normal mode operation. In
the following steps, the display will go back to "OVP TRIPPED" if you let the
display time out after about several seconds.
Over Voltage
Display Limit
or
1 Readjust the OVP trip level or the output voltage level.
Lower the output voltage level below the OVP trip point after pressing the
Display Limit or raise the OVP trip level by using the knob after pressing
the Over Voltage key.
Over Voltage
2 Move to the clear mode.
ovp on
You will see the above message after pressing the Over Voltage key. If you
changed the output voltage level, press the Over Voltage key twice. Turn the
knob to the right until the "OVP CLEAR" appears on the display.
35
2
Chapter 2 Quick Start
To Program Overvoltage Protection
Over Voltage
3 Clear the overvoltage condition and exist this menu.
Now, when you press the Over Voltage key again, the "DONE" message is
displayed for a second and the OVP annunciator will not blink any more. The
output will return to meter mode.
36
Chapter 2 Quick Start
To Program Overcurrent Protection
To Program 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.
Setting the OCP Level and Enable the OCP Circuit
Power
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); the 15V/7A range is selected (the 15V
annunciator turns on); and the knob is selected for voltage control.
Output On/Off
2 Enable the output.
The OFF annunciator turns off and the display will go to the meter mode.
Over Current
3 Enter the OCP menu and set the trip level.
level 7.5 a
You will see the above message on the display when you enter the OCP menu.
Adjust the knob for the desired OCP trip level.
Over Current
4 Enable the OCP circuit.
ocp on
You will see above message after pressing the Over Current key .
Over Current
5 Exit the OCP menu.
changed
37
2
Chapter 2 Quick Start
To Program Overcurrent Protection
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. The power supply will exit the OCP menu and the display
will return to the meter mode. Check that the OCP annunciator turns on.
Checking OCP Operation
To check OCP operation, raise the output current to near the trip point. Then
very gradually increase the output by turning the knob until OCP circuit trips.
This will cause the power supply's output current to drop to zero and the OCP
annunciator is blinking. The "OCP TRIPPED" message also appears on the
display.
Clearing the Overcurrent Condition
When the OCP circuit trips (the "OCP TRIPPED" message is shown on the
display), the OCP annunicator blinks. When it was caused by external voltage
source such as a battery, disconnect it first. The following steps show how to
clear the overcurrent conditions and get back to normal mode operation. In
the following steps, the display will go back to "OCP TRIPPED" if you let the
display time out after about several seconds.
Over Current
Display Limit
or
1 Readjust the OCP trip level or the output current level.
Lower the output current level below the OCP trip point after pressing the
Display Limit or raise the OCP trip level by using the knob after pressing
the Over Current key.
2 Move to the clear mode.
ocp on
You will see the above message after pressing the Over Current key. If you
changed the output current level, press the Over Current key twice. Turn the
knob to the right until the "OCP CLEAR" appears on the display.
Over Current
3 Clear the overcurrent condition and exit this menu.
Now, when you press the Over Current key again, the "DONE" message is
displayed for a second and the OCP annunciator will not blink any more. The
output will return to meter mode.
38
Chapter 2 Quick Start
To Rack Mount the Power Supply
To Rack Mount the Power Supply
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. Any Agilent System II
instrument of the same size can be rack-mounted beside the Agilent E3632A
power supply. To rack mount the power supply, follow these procedures.
Remove the front and rear bumpers before rack-mounting the power supply.
To remove the rubber bumper, stretch a corner and then slide it off.
To rack mount a single instrument, order adapter kit 5063-9243.
39
2
Chapter 2 Quick Start
To Rack Mount the Power Supply
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 50639256, and slide kit 1494-0015.
40
3
Calibration Procedures
Calibration Procedures
This chapter contains procedures for verification of the power supply's
performance and calibration (adjustment). The chapter is divided into the
following sections:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Agilent Technologies Calibration Services, page 43
Calibration Interval, page 43
Automating Calibration Procedures, page 44
Recommended Test Equipment, page 44
Test Considerations, page 45
Performance Verification Tests, page 46
Measurement Techniques, page 47
Constant Voltage (CV) Verifications, page 49
Constant Current (CC) Verifications, page 53
Performance Test Record for Agilent E3632A, page 57
Calibration Security Code, page 58
Calibration Count, page 61
Calibration Message, page 61
General Calibration/Adjustment Procedure, page 62
Aborting a Calibration in Progress, page 68
Calibration Record for Agilent E3632A, page 69
Error Messages, page 70
Calibration Program, page 72
The performance verification tests for constant voltage (CV) and constant
current (CC) operations use the power supply's specifications listed in chapter
1, "Specifications", starting on page 13.
42
Chapter 3 Calibration Procedures
Agilent Technologies Calibration Services
Closed-Case Electronic Calibration The power supply features closedcase electronic calibration since no internal mechanical adjustments are
required for normal calibration. The power supply calculates correction
factors based upon the input reference value you enter. The new correction
factors are stored in non-volatile memory until the next calibration adjustment
is performed. (Non-volatile memory does not change when power has been off
or after a remote interface reset.)
Agilent Technologies Calibration Services
When your power supply is due for calibration, contact your local Agilent
Technologies Service Center for a low-cost calibration. The Agilent E3632A
power supply is supported on calibration processes which allow Agilent
Technologies to provide this service at competitive prices.
Calibration Interval
The power supply should be calibrated on a regular interval determined by the
accuracy requirements of your application. A 1-year interval is adequate for
most applications. Agilent Technologies does not recommend extending
calibration intervals beyond 1 year for any application. Agilent Technologies
recommends that complete re-adjustment should always be performed at the
calibration interval. This will increase your confidence that the Agilent E3632A
will remain within specification for the next calibration interval. This criteria
for re-adjustment provides the best long-term stability.
43
3
Chapter 3 Calibration Procedures
Automating Calibration Procedures
Automating Calibration Procedures
You can automate the complete verification procedures outlined in this chapter
if you have access to programmable test equipment. You can program the
instrument configurations specified for each test over the remote interface.
You can then enter readback verification data into a test program and compare
the results to the appropriate test limit values.
You can also enter calibration constants from the remote interface. Remote
operation is similar to the local front-panel procedure. You can use a computer
to perform the adjustment by first selecting the required setup. The calibration
value is sent to the power supply and then the calibration is initiated over the
remote interface. The power supply must be unsecured prior to initiating the
calibration procedure. An Agilent BASIC program for calibration over the GPIB
interface is listed at the end of this chapter.
For further details on programming the power supply, see chapters 3 and 4 in
the Agilent E3632A User's Guide.
Recommended Test Equipment
The test equipment recommended for the performance verification and
adjustment procedures is listed below. If the exact instrument is not available,
use the accuracy requirements shown to select substitute calibration
standards.
Table 3-1 Recommended Test Equipment
Instrument
Requirements
Recommended
Model
Use
GPIB Controller
Full GPIB capabilities
Agilent 82341C
Interface card
Programming and
readback accuracy
Oscilloscope
100 MHz with 20MHz
bandwidth
Agilent 54602B
Display transient response
and ripple & noise
waveform
RMS Voltmeter
20 MHz
Digital Voltmeter
Resolution: 0.1 mV
Accuracy: 0.01%
Electronic Load
Voltage Range: 50 Vdc
Current Range: 10 Adc
Agilent 6063B
Open and Short Switches
Transient On/Off
Measure load and line
regulations and transient
response time.
Resistive Loads (RL)
2.19, 200 W
7.59, 200 W
Measure ripple and noise
Current monitoring
Resistor (Shunt)
0.019, 0.01%
Constant current test setup
44
Measure rms ripple & noise
Agilent 34401A
Measure dc voltages
Chapter 3 Calibration Procedures
Test Considerations
Test Considerations
To ensure proper instrument operation, verify that you have selected the
correct power-line voltage prior to attempting any test procedure in this
chapter. page 24 for more information.
For optimum performance verification, all test procedures should comply with
the following recommendations.
• Assure that the calibration ambient temperature is stable and between 20°C
and 30°C.
• Assure ambient relative humidity is less than 80%.
• Allow a 1-hour warm-up period before verification or calibration.
• Keep cables as short as possible, consistent with the impedance
requirements.
Caution
The tests should be performed by qualified personnel. During performance
verification tests, hazardous voltages may be present at the outputs of the
power supply.
45
3
Chapter 3 Calibration Procedures
Performance Verification Tests
Performance Verification Tests
The performance verification tests use the power supply's specifications listed
in chapter 1, "Specifications", starting on page 13.
You can perform two different levels of performance verification tests:
• Self-Test A series of internal verification tests that provide high
confidence that the power supply is operational.
• Performance Verification Tests These tests can be used to verify the
power supply's specifications following repairs to specific circuits.
Self-Test
A power-on self-test occurs automatically when you turn on the power supply.
This limited test assures you that the power supply is operational.
The complete self-test is enabled by pressing the Recall key (actually any
front panel keys except the Error key) and the power-line switch
simultaneously and then continuing to press the Recall key for 5 seconds.
The complete self-test will be finished in 2 more seconds.
You can also perform a self-test from the remote interface (see chapter 3 in
the Agilent E3632A User's Guide).
• If the 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. If repair is required, see chapter 5, "Service", starting on page 89, for
further details.
• If self-test passes, you have a high confidence that the power supply is
operational.
Performance Verification Tests
These tests can be used to verify the power supply's specifications following
repairs to specific circuits. The following sections explain all verification
procedures in detail. All of the performance test specifications are shown in
each test.
46
Chapter 3 Calibration Procedures
Measurement Techniques
Measurement Techniques
Setup for Most Tests
Most tests are performed at the front terminals as shown in the following
figure. Measure the dc voltage directly at the (+) and (-) terminals on the front
panel.
3
Figure 3-1. Performance Verification Test Setup
Electronic Load
Many of the test procedures require the use of a variable load resistor capable
of dissipating the required power. Using a variable load resistor requires that
switches be used to connect, disconnect, and short the load resistor. An
electronic load, if available, can be used in place of a variable load resistor and
switches. The electronic load is considerably easier to use than load resistors.
It eliminates the need for connecting resistors or rheostats in parallel to handle
power, it is much more stable than carbon-pile load, and it makes easy work
of switching between load conditions as is required for the load regulation and
load transient response tests. Substitution of the electronic load requires minor
changes to the test procedures in this chapter.
47
Chapter 3 Calibration Procedures
Measurement Techniques
General Measurement Techniques
To achieve best results when measuring load regulation, peak to peak voltage,
and transient response time of the power supply, measuring devices must be
connected through the hole in the neck of the binding post at (A) while the
load resistor is plugged into the front of the output terminals at (B). A
measurement made across the load includes the impedance of the leads to the
load. The impedance of the load leads can easily be several orders of the
magnitude greater than the power supply impedance and thus invalidate the
measurement. To avoid mutual coupling effects, each measuring device must
be connected directly to the output terminals by separate pairs of leads.
Front Panel Terminal Connections (Side View)
Current-Monitoring Resistor
To eliminate output current measurement error caused by the voltage drops
in the leads and connections, connect the current monitoring resistor between
the (-) output terminal and the load as a four-terminal device. Connect the
current-monitoring leads inside the load-lead connections directly at the
monitoring points on the resistor element (see RM in Figure 3-1).
Programming
Most performance tests can be performed only from the front panel. However,
an GPIB or RS-232 controller is required to perform the voltage and current
programming accuracy and readback accuracy tests.
The test procedures are written assuming that you know how to program the
power supply either from the front panel or from an GPIB or RS-232 controller.
Complete instructions on front panel and remote programming are given in the
Agilent E3632A User's Guide.
48
Chapter 3 Calibration Procedures
Constant Voltage (CV) Verifications
Constant Voltage (CV) Verifications
Constant Voltage Test Setup
If more than one meter or a meter and an oscilloscope are used, connect each
to the (+) and (-) terminals by a separate pair of leads to avoid mutual coupling
effects. Use coaxial cable or shielded 2-wire cable to avoid noise pick-up on
the test leads.
Voltage Programming and Readback Accuracy
This test verifies that the voltage programming and GPIB or RS-232 readback
functions are within specifications. Note that the readback values over the
remote interface should be identical to those displayed on the front panel.
You should program the power supply over the remote interface for this test
to avoid round off errors.
1 Turn off the power supply and connect a digital voltmeter between the (+) and
(-) terminals of the output to be tested as shown in Figure 3-1.
2 Turn on the power supply. Select the 30V/4A range and enable the outputs by
sending the commands:
VOLT:RANG P30V
OUTP ON
3 Program the output voltage to zero volt and current to full rated value (4.0A)
by sending the commands:
VOLT 0
CURR 4
4 Record the output voltage reading on the digital voltmeter (DVM). The reading
should be within the limits of (0V ± 10 mV). Also, note that the CV, Adrs, Limit,
and Rmt annunciators are on.
5 Readback the output voltage over the remote interface by sending the
command:
MEAS:VOLT?
6 Record the value displayed on the controller. This value should be within the
limits of (DVM ± 5 mV)
49
3
Chapter 3 Calibration Procedures
Constant Voltage (CV) Verifications
7 Program the output voltage to full rated value (30.0V) by sending the command.
VOLT 30.0
8 Record the output voltage reading on the digital voltmeter (DVM). The readings
should be within the limits of (30V 5mV).
9 Readback the output voltage over the remote interface by sending the
command:
MEAS:VOLT?
10 Record the value displayed on the controller. This value should be within the
limits of (DVM 0mV).
CV Load Regulation
This test measures the change in the output voltage resulting from a change in
the output current from full to no load.
1 Turn off the power supply and connect a digital voltmeter between the (+) and
(-) terminals of the output to be tested as shown in Figure 3-1.
2 Turn on the power supply. Select the 30V/4A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the output current to the full rated value (4.0A) and the voltage to the full rated
value (30.0V)
3 Operate the electronic load in constant current mode and set its current to
4.0A. Check that the front panel CV annunciator remains lit. If not lit, adjust
the load so that the output current drops slightly until the CV annunciator
lights. Record the output voltage reading on the digital voltmeter.
4 Operate the electronic load in open mode (input off). Record the output voltage
reading on the digital voltmeter again. The difference between the digital
voltmeter readings in steps (3) and (4) is the CV load regulation. The difference
of the readings should be within the limit of 5mV.
CV Line Regulation
This test measures the change in output voltage that results from a change in
ac line voltage from the minimum value (10% below the nominal input voltage)
to maximum value (10% above the nominal input voltage).
1 Turn off the power supply and connect a digital voltmeter between the (+) and
(-) terminals of the output to be tested as shown in Figure 3-1.
50
Chapter 3 Calibration Procedures
Constant Voltage (CV) Verifications
2 Connect the ac power line through a variable voltage transformer.
3 Turn on the power supply. Select the 30V/4A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the current to the full rated value (4.0A) and the voltage to full rated value
(30.0V).
4 Operate the electronic load in constant current mode and set its current to
4.0A. Check that the CV annunciator remains lit. If not lit, adjust the load so
that the output current drops slightly until the CV annunciator lights.
5 Adjust the transformer to low line voltage limit (104 Vac for nominal 115 Vac,
90 Vac for nominal 100 Vac, or 207 Vac for nominal 230 Vac). Record the output
reading on the digital voltmeter.
6 Adjust the autotranformer to high line voltage (127 Vac for nominal 115 Vac,
110 Vac for nominal 100 Vac, or 253 Vac for nominal 230 Vac). Record the
voltage reading on the digital voltmeter. The difference between the digital
voltmeter readings in steps (5) and (6) is the CV line regulation. The difference
of the readings should be within the limit of 5mV.
Normal Mode Voltage Noise (CV Ripple and Noise)
The normal mode voltage noise is in the form of ripple related to the line
frequency plus some random noise. The normal mode voltage noise is specified
as the rms or peak-to-peak output voltage in a frequency range from 20 Hz to
20 MHz.
1 Turn off the power supply and connect the output to be tested as shown in Figure
3-1 to an oscilloscope (ac coupled) between (+) and (-) terminals. Set the
oscilloscope to AC mode and bandwidth limit to 20 MHz. Connect a resistive
load (7.5) as shown in Figure 3-1.
2 Turn on the power supply. Select the 30V/4A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the current to the full rated value (4.0A) and the voltage to the full rated value
(30.0V).
3 Check that the front panel CV annunciator remains lit. If not lit, adjust the load
down slightly.
4 Note that the waveform on the oscilloscope does not exceed the peak-to-peak
limit of 2 mV.
5 Disconnect the oscilloscope and connect an AC rms voltmeter in its place. The
rms voltage reading does not exceed the rms limit of 0.35 mV.
51
3
Chapter 3 Calibration Procedures
Constant Voltage (CV) Verifications
Load Transient Response Time
This test measures the time for the output voltage to recover to within 15 mV
of nominal output voltage following a load change from full load to half load,
or half load to full load.
1 Turn off the power supply and connect the output to be tested as shown in Figure
3-1 with an oscilloscope. Operate the electronic load in constant current mode.
2 Turn on the power supply. Select the 30V/4A enable the outputs and set the
display to the limit mode. When the display is in the limit mode, program the
current to the full rated value (4.0A) and the voltage to the full rated value
(3.0V).
3 Set the electronic load to transient operation mode between one half of the
output's full scale value and the output's full rated value at a 1 kHz rate with
50% duty cycle.
4 Set the the oscilloscope for ac coupling, internal sync, and lock on either the
positive or negative load transient.
5 Adjust the the oscilloscope to display transients as shown in Figure 3-2. Note
that the pulse width (t2-t1) of the transients at 15 mV from the base line is no
more than 50 msec for the output.
Figure 3-2. Transient Response Time
52
Chapter 3 Calibration Procedures
Constant Current (CC) Verifications
Constant Current (CC) Verifications
Constant Current Test Setup
Follow the general setup instructions in the "Measurement Techniques"
section, starting on page 47 and the specific instructions will be given in the
following paragraphs.
Current Programming and Readback Accuracy
This test verifies that the current programming and GPIB or RS-232 readback
functions are within specifications. Note that the readback values over the
remote interface should be identical to those displayed on the front panel. The
accuracy of the current monitoring resistor must be 0.01% or better.
You should program the power supply over the remote interface for this test
to avoid round off errors.
1 Turn off the power supply and connect a 0.01 current monitoring resistor (RM)
across the output to be tested and a digital voltmeter across the current
monitoring resistor (RM).
2 Turn on the power supply. Select the 15V/7A range and enable the output by
sending the commands:
VOLT:RANG P15V
OUTP ON
3 Program the output voltage to full rated voltage (15.0V) and output current to
zero amp by sending the commands:
VOLT 15
CURR 0
4 Divide the voltage drop (DVM reading) across the current monitoring resistor
(RM) by its resistance to convert to amps and record this value (IO). This value
should be within the limits of(0A10mA). Also, note that the CC, Adrs, Limit,
and Rmt annunciators are on.
5 Readback the output current over the remote interface by sending the
command:
MEAS:CURR?
6 Record the value displayed on the controller. This value should be within the
limit of (IO 5mA).
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3
Chapter 3 Calibration Procedures
Constant Current (CC) Verifications
7 Program the output current to the full rated value (7.0A) by sending the
commands:
CURR 7.0
8 Divide the voltage drop (DVM reading) across the current monitoring resistor
(RM) by its resistance to convert to amps and record this value (IO). This value
should be within the limit of (7A 4mA).
9 Readback the output current over the remote interface by sending the
command:
MEAS:CURR?
10 Record the value displayed on the controller. This value should be within the
limit (IO 5.5mA).
CC Load Regulation
This test measures the change in output current resulting from a change in the
load from full-rated output voltage to short circuit.
1 Turn off the power supply and connect the output to tested as shown in Figure
3-1 with the digital voltmeter connected across the 0.01 current monitoring
resistor (RM).
2 Turn on the power supply. Select the 15V/7A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the output voltage to the full rated value (15.0V) and the output current to the
full rated value (7.0A).
3 Operate the electronic load in constant voltage mode and set its voltage to
15.0V. Check that the CC annunciator is on. If it is not, adjust the load so that
the output voltage drops slightly. Record the current reading by dividing the
voltage reading on the digital voltmeter by the resistance of the current
monitoring resistor.
4 Operate the electronic load in short (input short) mode. Record the current
reading again by dividing the voltage reading on the digital voltmeter by the
resistance of the current monitoring resistor. The difference between the
current readings in step (3) and (4) is the load regulation current. The
difference of the readings should be within the limit of 0.95mA.
54
Chapter 3 Calibration Procedures
Constant Current (CC) Verifications
CC Line Regulation
This test measures the change in output current that results from a change in
ac line voltage from the minimum value (10% below the nominal input voltage)
to the maximum value (10% above nominal voltage).
1 Turn off the power supply and connect the output to be tested as shown in Figure
3-1 with the digital voltmeter connected across the current monitoring resistor
(RM).
2 Connect the ac power line through a variable voltage transformer.
3 Turn on the power supply. Select the 15V/7A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the voltage to the full rated value (15.0V) and the current to the full rated value
(7.0A).
4 Operate the electronic load in constant voltage mode and set its voltage to
15.0V. Check that the CC annunciator remains lit. If not lit, adjust the load so
that the output voltage drops slightly until the CC annunciator lights.
5 Adjust the transformer to low line voltage limit (104 Vac for nominal 115 Vac,
90 Vac for nominal 100 Vac, or 207 Vac for nominal 230 Vac). Record the output
current reading by dividing the voltage reading on the digital voltmeter by the
resistance of the current monitoring resistor.
6 Adjust the transformer to 10% above the nominal line voltage (127 Vac for a
115 Vac nominal input, 110 Vac for a 100 Vac nominal input or 253 Vac for a
230 Vac nominal input). Record the current reading again by dividing the
voltage reading on the digital voltmeter by the resistance of the current
monitoring resistor. The difference between the current readings in step (5)
and (6) is the load regulation current. The difference of the readings should be
within the limit of 0.95mA.
Normal Mode Current Noise (CC Ripple and Noise)
The normal mode current noise is specified as the rms output current in a
frequency range 20 Hz to 20 MHz with the power supply in constant current
operation.
1 Turn off the power supply and connect the output to be tested as shown in Figure
3-1 with a load resistor (2.19) across output terminals to be tested. Connect a
rms voltmeter across the load resistor. Use only a resistive load for this test.
55
3
Chapter 3 Calibration Procedures
Common Mode Current Noise
2 Turn on the power supply. Select the 15V/7A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the current to full rated value (7.0A) and the voltage to the full rated value
(15.0V).
3 The output current should be at the full-rated rating with the CC annunciator
on. If not lit, adjust the load so that the output voltage drops slightly until the
CC annunciator lights.
4 Divide the reading on the rms voltmeter by the load resistance to obtain rms
current. The readings should be within the limit of 2mA.
Common Mode Current Noise
The common mode current is that ac current component which exists between
the output or output lines and chassis ground. Common mode noise can be a
problem for very sensitive circuitry that is referenced to earth ground. When
a circuit is referenced to earth ground, a low level line-related ac current will
flow from the output terminals to earth ground. Any impendance to earth
ground will create a voltage drop equal to the output current flow multiplied
by the impendance.
1 Turn off the power supply and connect a 100K9 resistor (RS) and a 2200 pF
capacitor in parallel between the (-) terminal and chassis ground.
2 Connect a digital voltmeter across RS.
3 Turn on the power supply. Select the 15V/7A range, enable the output, and set
the display to the limit mode. When the display is in the limit mode, program
the output to the full rated value (15.0V and 7.0A).
4 Record the voltage across RS and convert it to current by dividing by the
resistance (DVM reading/100K9). Note that the current is less than 1.5 mA.
56
Chapter 3 Calibration Procedures
Performance Test Record for Agilent E3632A
Performance Test Record for Agilent E3632A
CV Performance Test Record
Test Description
Specifications
Actual
Result
Upper Limit
Lower Limit
CV Programming Accuracy @ 0 volts
(DVM reading)
+0.0100 V
-0.0100 V
CV Readback Accuracy @ 0 volts
DVM + 0.0050 V
DVM - 0.0050 V
CV Programming Accuracy @ Full Scale
(DVM reading)
+30.025V
29.9750 V
CV Readback Accuracy @ Full Scale
DVM + 0.0200 V
DVM - 0.0200 V
CV Load Regulation
Maximum change: <5 mV
CV Line Regulation
Maximum change: <5 mV
CV Ripple/Noise
<2 mV p-p, 0.35 mV rms
Load Transient Response Time
<50 msec
3
CC Performance Test Record
Test Description
CC Programming Accuracy @ 0 amps (IO)
Actual
Result
Specifications
Upper Limit
+0.0100 A
Lower Limit
-0.0100 A
CC Readback Accuracy @ 0 amps
IO + 0.0050 A
IO - 0.0050 A
CC Programming Accuracy @ Full Scale (IO)
7.0240 A
6.9760 A
IO - 0.0155 A
CC Readback Accuracy @ Full Scale
IO + 0.0155 A
CC Load Regulation
Maximum change: <0.95 mA
CC Line Regulation
Maximum change: <0.95 mA
CC Ripple/Noise
<2 mA
Common Mode Current Noise
<1.5 mA rms
57
Chapter 3 Calibration Procedures
Calibration Security Code
Calibration Security Code
This feature allows you to enter a security code (electronic key) to prevent
accidental or unauthorized calibrations of the power supply. When you first
receive your power supply, it is secured. Before you can calibrate the power
supply, you must unsecure it by entering the correct security code. A
procedure to unsecure the power supply is given on the following page.
• The security code is set to "HP003632" when the power supply is shipped
from the factory. The security code is stored in non-volatile memory, and
does not change when power has been off or after a remote interface reset.
• To secure the power supply from the remote interface, the security code
may contain up to 12 alphanumeric characters as shown below. The first
character must be a letter, but the remaining characters can be letters or
numbers. You do not have to use all 12 characters but the first character
must always be a letter.
A_ _ _ _ _ _ _ _ _ _ _
(12 characters)
• To secure the power supply from the remote interface so that it can be
unsecured from the front panel, use the eight-character format shown
below. The first two characters must be "H P" and the remaining characters
must be numbers. Only the last six characters are recognized from the front
panel, but all eight characters are required. To unsecure the power supply
from the front panel, omit the "H P" and enter the remaining numbers as
shown on the following pages.
H P _ _ _ _ _ _ (8 characters)
• If you forget your security code, you can disable the security feature by
adding a jumper inside the power supply, and then entering a new code. See
the procedure on page 60.
58
Chapter 3 Calibration Procedures
Calibration Security Code
To Unsecure the Power Supply for Calibration
The power supply can use a calibration security code to prevent unauthorized
or accidental calibration. This procedure shows you how to unsecure the
power supply for calibration from the front panel.
Calibrate
1 Turn on the front-panel calibration mode.
Power
secured
3
Turn on the calibration mode by pressing the "Calibrate" key while
simultaneously turning on the power supply then continue to hold the
"Calibrate" key for about 5 seconds until a beep is heard.
If the power supply is secured, you will see the above message from the front
panel for approximately one second. The "CAL MODE'' message is then
displayed on the front panel.
Secure
2 Move to the security code by pressing the "Secure" key.
000000
code
3 Enter the security code using the knob and resolution selection keys.
003632
code
The security code is set to "Agilent Technologies003632" when the power
supply is shipped from the factory. The security code is stored in non-volatile
memory and does not change when the power has been off or after a remote
interface reset.
To enter the security code from the front panel, enter only the last six digits.
To enter the security code from the remote interface, you may enter up to 12
characters.
Use the resolution selection keys to move left or right between digits. Use the
knob to change the digits. Notice that the security code may be different if the
security code has been changed from the default setting.
59
Chapter 3 Calibration Procedures
Calibration Security Code
Secure
4 Unsecure the power supply.
unsecured
The power supply is unsecured when you press the Secure key. You will see
the above message from the front panel for one second. The "CAL MODE"
message is displayed on the front panel after above message.
Power
5 Turn off the calibration mode.
Turn off the power supply to exit the calibration mode.
To re-secure the power supply (following calibration), perform this
procedure again.
To Unsecure the Power Supply Without the Security Code
To unsecure the power supply without the correct security code (when you
forget the security code), follow the steps below. See "Electrostatic Discharge
(ESD) Precautions" in chapter 5 before beginning this procedure.
1 Disconnect the power cord and all load connections from front terminals.
2 Remove the instrument cover. Refer to the disassembly drawing on page 119.
3 Connect the power cord and turn on the calibration mode by pressing the
"Calibrate" key while simultaneously turning on the power supply then
continue to hold the "Calibrate" key for about 5 seconds until a beep is heard.
Be careful not to touch the power line connections.
4 Apply a short between the two exposed metal pads on JP5 (located near U13).
The JP5 is outlined with a circle on the component locator drawing on page 120.
5 While maintaining the short, move to the security code and enter any unsecure
code in the calibration mode. The power supply is now unsecured.
6 Remove the short at JP5. (An error occurs if not removed.)
7 Turn off and reassemble the power supply.
Now you can enter a new security code. Be sure you take note of the new
security code.
60
Chapter 3 Calibration Procedures
Calibration Count
Calibration Count
The calibration count feature provides an independent "serialization" of your
calibrations. You can determine the number of times that your power supply
has been calibrated. By monitoring the calibration count, you can determine
whether an unauthorized calibration has been performed. Since the value
increments by one for each calibration parameter (see Table 3-2 on the next
page), a complete calibration increases the value by 5 counts.
• The calibration count is stored in non-volatile memory and does not change
when power has been off or after a remote interface reset. Your power
supply was calibrated before it left the factory. When you receive the power
supply, read the calibration count to determine its value.
• The calibration count increments up to a maximum of 32,767 after which it
wraps around to 0. No way is provided to program or reset the calibration
count.
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.
You can record and read information in the calibration message from the
remote interface only.
• The calibration message may contain up to 40 characters.
• The calibration message is stored in non-volatile memory and does not
change when power has been off or after a remote interface reset.
61
3
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
General Calibration/Adjustment Procedure
The calibration procedures from the front panel are described in this section.
For voltage calibration, disconnect all loads from the power supply and
connect a DVM across the output terminals. For current calibration,
disconnect all loads from the power supply, connect an appropriate current
monitoring resistor (0.019) across the output terminals, and connect a DVM
across the terminals of the monitoring resistor.
Note that the power supply should be calibrated after 1-hour warm-up with
no load connected.
The following table shows calibration parameters and points which should be
used to calibrate the output voltage and current.
Table 3-2. Parameters for Calibration
Calibration Parameter
Voltage/
Current
Calibration Point
mnemonic
V LO
CAL SETUP 1
Voltage
CAL SETUP 2
OVP
CAL SETUP 3
Current
CAL SETUP 4
OCP
V MI
V HI
None
V LO
I MI
V HI
None
Note
You can terminate any CAL SETUP without changing its calibration
constants by turning off power.
Note
Perform the voltage calibration prior to the OVP calibration and the current
calibration prior to the OCP calibration.
62
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
To calibrate the output voltages and currents of the power supply from the
front panel, proceed as follows:
1 Unsecure the power supply.
To calibrate the voltage and current, you must unsecure the power supply
according to the procedure given on page 59.
2 Disconnect all loads from the power supply and connect a DVM across
output terminals.
Calibrate
3 Turn on the calibration mode.
Power
3
cal mode
Turn on the calibration mode by pressing the "Calibrate" key while
simultaneously turning on the power supply then continue to hold the
"Calibrate" key for about 5 seconds until a beep is heard. Make sure that the
power supply is in "CV" mode. If the power supply is not in "CV" mode, an error
occurs.
Voltage and OVP Calibration
Calibrate
4 Move down a level to the voltage calibration mode.
cal setup 1
The display shows the above message to indicate that the power supply is ready
for the voltage calibration.
Calibrate
5 Calibrate DAC and select the low voltage calibration point.
30 left
The "START BITCAL" message is displayed for about 3 seconds to indicate that
the power supply is ready for DAC calibration. Then it counts down numbers
from 30 to 0.
63
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
v lo +0.5000 v
Then, the display shows the low voltage calibration point.
6 Read the DVM and change the low voltage value on the display to match
the measured voltage.
For example, if the DVM reading is 0.4500 V, adjust the voltage to 0.4500 V using
the knob and resolution selection keys.
v lo +0.4500 v
Calibrate
7 Pressing the "Calibrate" key saves the change and selects the middle
voltage calibration point.
v Mi +15.000v
If the entered number is within an acceptable range, an "ENTERED" message
appears for one second. If the entered number is not correct, an "MIN VALUE"
"MAX VALUE" message appears for one second and the display shows the low
voltage calibration point again. The display now shows the middle voltage
calibration point.
8 Read the DVM and change the middle voltage value on the display to
match the measured voltage.
For example, if the DVM reads 14.995 V, adjust the voltage to 14.995 V using
the knob and arrow keys.
v Mi +14.995v
Calibrate
9 Pressing the "Calibrate" key saves the change and selects the high
voltage calibration point.
v hi 29.500 v
64
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
If the entered number is within an acceptable range, a "ENTERED" message
appears for one second. If the entered number is not correct, an "MIN VALUE"
or "MAX VALUE" message appears for one second and the display shows the
middle voltage calibration point again. The display now shows the high voltage
calibration point.
10 Read the DVM and change the first voltage value on the display to match
the measured voltage.
For example, if the DVM reads 28.995V, adjust the current to 28.995 V using the
knob and arrow keys.
3
v hi 28.995 v
Calibrate
11 Pressing the "Calibrate" key saves the new voltage calibration
constants, and goes to the OVP calibration mode.
cal setup 2
A "CALIBRATING" message appears for one second to indicate that the voltage
calibration is progressing and new voltage calibration constants of "SETUP 1"
are stored. Then, the display shows above message to indicate that the power
supply is ready for the OVP calibration.
If the calibration fails, a "DAC CAL FAIL" or " ADC CAL FAIL" message appears
for one second and the display shows the "CAL SETUP 1" for voltage
calibration again.
Current and OCP Calibration
Connect an appropriate shunt (0.019) across the output terminals, and
connect a digital voltmeter across the shunt resistor for the current
calibration.
65
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
12 Pressing the "Calibrate" key saves the new calibration constants for
OVP circuit and goes to the current calibration mode.
cal setup 3
A "CALIBRATING" message appears for about several seconds to indicate that
the OVP calibration is progressing and new calibration constants of "SETUP
2" are stored. Then, the display shows the above message to indicate that the
power supply is ready for the current calibration.
If the calibration fails, a "OVP CAL FAIL" message appears for one second and
the display shows the "CAL SETUP 2" for OVP calibration again.
Calibrate
13 Select the low current calibration point.
i lo 0.200 a
The display shows the low current calibration point.
14 Read the DVM and change the low current value on the display to match
the computed current (DVM reading ¸ by shunt resistance).
For example, if the computed value is 0.199 A, adjust the current to 0.199 A
using the knob and arrow keys.
Notice that you should wait for the DVM reading to stabilize for accurate
calibration.
i lo +0.199 a
Calibrate
15 Pressing the "Calibrate" key saves the change and selects the middle
current calibration point.
i mi 3.500 a
If the entered number is within an acceptable range, an "ENTERED" message
appears for one second. If the entered number is not correct, an "MIN VALUE"
or "MAX VALUE" message appears for one second and the display shows the
low current calibration point again. The display now shows the middle current
calibration point.
66
Chapter 3 Calibration Procedures
General Calibration/Adjustment Procedure
16 Read the DVM and change the middle current value on the display to
match the computer current (DVM reading ¸ by shunt resistance).
For example, if the computered value is 3.499 A, adjust the current to 3.499 A
using the knob and arrow keys.
Notice that you should wait for the DVM reading to stabilize for accurate
calibration.
i mi 3.499 a
Calibrate
3
17 Pressing the "Calibrate'' key saves the change and selects the high
current calibration point.
i hi 6.900 a
If the entered number is within an acceptable range, an "ENTERED" message
appears for one second. If the entered number is not correct, an "MIN VALUE"
or "MAX VALUE" message appears for one second and the display shows the
middle current calibration point again. The display now shows the high current
calibration point
18 Read the DVM and change the high current value on the display to
match the computed current (DVM reading ¸ by shunt resistance).
For example, if the computed value is 6.899 A, adjust the current to 6.899 A
using the knob and arrow keys.
Notice that you should wait for the DVM reading to stabilize for accurate
calibration.
i hi 6.899 a
67
Chapter 3 Calibration Procedures
Aborting a Calibration in Progress
Calibrate
19 Pressing the "Calibrate" key saves the new calibration constants for
the output current and goes to the OCP calibration mode.
cal setup 4
A "CALIBRATING" message appears for one second to indicate that the current
calibration is progressing and new calibration constants of "SETUP 3" are
stored. Then, the display shows the above message to indicate that the power
supply is ready for the OCP calibration.
If the calibration fails, an "DAC CAL FAIL" or "ADC CAL FAIL" message appears
for one second and the display shows the "CAL SETUP 3" for current
calibration again.
Calibrate
20 Pressing the "Calibrate" key saves the new OCP calibration constants
and return to the calibration mode.
cal mode
A "CALIBRATING" message appears for several seconds to indicate that the
OCP calibration is progressing and new OCP calibration constants of "SETUP
4" are stored. Then the display will return to the calibration mode.
Power
21 Turn off the power supply to exit the calibration mode.
Aborting a Calibration in Progress
Sometimes it may be necessary to abort a calibration after the procedure has
already been initiated. You can abort a calibration at any time by turning the
power supply off from the front panel. When performing a calibration from the
remote interface, you can abort a calibration by issuing a remote interface
device clear message or by pressing the front-panel "Local" key.
68
Chapter 3 Calibration Procedures
Calibration Record for Agilent E3632A
Calibration Record for Agilent E3632A
Step
Calibration Description
Measurement
Mode (DVM)
Supply being
Adjusted
1
Unsecure the power supply (see page 59).
2
Turn on "CAL MODE"(simultaneously press "Calibrate" and "Power" keys)
until it beeps.
3
Move down menu to "CAL SETUP 1" (press "Calibrate" key).
4
Calibrate DAC and select the low point for voltage calibration; "START
BITCAL" appears for 3 seconds and the display counts down numbers from
30 to 0. Then, " V LO 0.5000 V" appears on the display(press "Calibrate" key
and wait about 30 seconds; then change the display to match the DVM
reading).
V
DAC and low
voltage point
calibration
5
"V MI 15.000 V" appears on the display (press "Calibrate" key; then change
the display to match the DVM reading).
V
Middle voltage
point calibration
6
"V HI 29.500 V" appears on the display (press "Calibrate" key; then change
the display to match the DVM reading).
V
High voltage point
calibration
7
"CAL SETUP 2" now appears on the display (press "Calibrate" key).
V
OVP calibration
8
"CAL SETUP 3" now appears on the display (press "Calibrate" key; then
connect 0.019resistor across the output terminals).
9
"I LO 0.200 A" appears on the display (press "Calibrate" key; then change
the display to match the computed current through 0.019resistor).
A
Low current point
calibration
10
"I MI 3.500 A" appears on the display (press "Calibrate" key; then change the
display to match the computed current through 0.019resistor).
A
Middle current
point calibration
11
"I HI 6.9000 A" appears on the display (press "Calibrate" key; then change
the display to match the computed current through 0.019resistor).
A
High current point
calibration
12
"CAL SETUP 4" now appears on the display (press "Calibrate" key).
A
13
Press "Calibrate" key, then press "Power" switch.
Voltage
Calibration
3
Current
calibration
OCP calibration
Exit CAL MODE
69
Chapter 3 Calibration Procedures
Error Messages
Error Messages
The following tables are abbreviated lists of error messages for the E3632A.
The errors listed are the most likely errors to be encountered during calibration
and adjustment. A more complete list of error messages and descriptions is
contained in chapter 5 of the E3632A User's Guide.
System Error Messages
Error
Error Message
-330
-350
501
502
511
512
513
514
521
522
550
Self-test failed
Too many errors
Isolator UART framing error
Isolator UART overrun error
RS-232 framing error
RS-232 overrun error
RS-232 parity error
Command allowed only with RS-232
Input buffer overflow
Output buffer overflow
Command not allowed in local
Self-Test Error Messages
Error
Error Message
601
602
603
604
605
606
607
608
624
625
626
630
631
632
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
Unable to sense line frequency
I/O processor does not respond
I/O processor failed self-test
Fan test failed
System DAC test failed
Hardware test failed
70
Chapter 3 Calibration Procedures
Error Messages
Calibration Error Messages
Error
Error Message
701
702
703
704
705
708
712
713
714
715
716
717
740
741
742
743
744
745
746
747
748
749
750
Cal security disabled by jumper
Cal secured
Invalid secure code
Secure code too long
Cal aborted
Cal output disabled
Bad DAC cal data
Bad readback cal data
Bad OVP cal data
Bad OCP cal data
Bad OVP DNL error correction data
Cal OVP or OCP status enabled
Cal checksum failed, secure state
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
Cal checksum failed, DAC DNL error correction data
3
71
Chapter 3 Calibration Procedures
Calibration Program
Calibration Program
This section contains an Agilent BASIC program for calibration over the GPIB
interface. This program makes software adjustments to the E3632A power
supply using a current shunt and a digital mutimeter which is connected to the
controller. In this program a 0.01 ohm current shunt is used. Be sure to change
the value of the variable "Current_shunt" to the value of the current shunt used
and the GPIB address for the power supply and the digital voltmeter.
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
!
! This program was written on a PC with Agilent Basic for Windows.
! It will make software adjustments to the E3632A Power Supply
! on the GPIB bus using a Agilent 34401A Digital Multimeter and a
! current shunt. In the program a 0.01 ohm current shunt is
! used to measure current. Be sure to change the value of
! the variable 'Current_shunt' to the value of the current
! shunt used.
!
CLEAR SCREEN
DIM Cal_msg$[40],Error$[40],Sec_code$[10]
REAL Dmm_rdg,Current_shunt
Current_shunt=.01
! Current Shunt value in Ohms
Sec_code$="HP003632"
! Assign the security code
ASSIGN @Dmm TO 722
! Assign address 22 to the Dmm
ASSIGN @Pwrsupply TO 705
! Assign address 5 to the Power Supply
CLEAR 7
! Clear GPIB, Dmm and Power Supply
OUTPUT @Pwrsupply;"*CLS"
! Clear Power Supply errors
OUTPUT @Dmm;"*RST"
! Reset Dmm
OUTPUT @Pwrsupply;"*RST"
! Reset Power Supply
OUTPUT @Pwrsupply;"CAL:STR?"
! Read the calibration message
ENTER @Pwrsupply;Cal_msg$
PRINT TABXY(5,2),"Calibration message of Power Supply is: ";Cal_msg$
!
! Set the Calibration security to off, and check to be sure
! it is off. If not successful, print message to screen and end.
!
OUTPUT @Pwrsupply;"VOLT:PROT:STAT OFF"
OUTPUT @Pwrsupply;"CURR:PROT:STAT OFF"
OUTPUT @Pwrsupply;"CAL:SEC:STAT OFF, ";Sec_code$
OUTPUT @Pwrsupply;"CAL:SEC:STAT?"
ENTER @Pwrsupply;A
IF A=1 THEN
PRINT TABXY(5,5),"****** Unable to Unsecure the Power supply ******"
GOTO 2290
END IF
72
Chapter 3 Calibration Procedures
Calibration Program
continued
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
560
570
580
590
600
610
620
630
640
650
660
670
680
690
700
710
720
730
740
750
760
770
780
790
800
810
820
830
840
850
860
870
!
! Perform the DAC error correction, voltage calibration and OVP calibration.
! Alert the operator to hook up the connection before calibrating.
!
! Alert operator to connect lead
PRINT TABXY(10,10),"*********************************************************"
PRINT TABXY(10,11)," Prepare for E3632A DAC DNL error correction and"
PRINT TABXY(10,12)," Voltage/OVP calibration. Connect the output to the DMM."
PRINT TABXY(10,13)," Observe Polarity!"
PRINT TABXY(10,14),"*********************************************************"
PRINT TABXY(10,16),"Press 'C' to Continue, 'I' to go to CURRENT calibration or"
PRINT TABXY(10,17),"'X' to eXit, then press 'Enter'"
Ch$="C"
INPUT Ch$
IF Ch$="X" OR Ch$="x" THEN GOTO 2250
IF Ch$="I" OR Ch$="i" THEN
CLEAR SCREEN
GOTO 1460
END IF
CLEAR SCREEN
PRINT TABXY(10,7),"BEGIN DAC ERROR CORRECTION"
WAIT 4
CLEAR SCREEN
OUTPUT @Pwrsupply;"OUTP ON"
! Turn on Power Supply output
OUTPUT @Pwrsupply;"CAL:DAC:ERROR"
! Perform DAC DNL error correction
WAIT 29
! Allow DAC error correction to finish
OUTPUT @Pwrsupply;"OUTPUT OFF"
! Turn off Power Supply output
OUTPUT @Pwrsupply;"SYST:ERR?"
ENTER @Pwrsupply;Error$
!
! Check to see if there is an error. If there is an error,
! display the error and exit the program.
!
CLEAR SCREEN
IF Error$="+0,""No error""" THEN
PRINT "DAC DNL Error Correction completed for Power Supply "
ELSE
PRINT "ERROR:";Error$;"DAC DNL Error not corrected "
BEEP
GOTO 2250
END IF
PRINT TABXY(10,5),"DAC DNL ERROR CORRECTION COMPLETE"
PRINT TABXY(10,7),"BEGIN VOLTAGE CALIBRATION"
WAIT 4
OUTPUT @Pwrsupply;"OUTPUT ON"
CLEAR SCREEN
OUTPUT @Pwrsupply;"CAL:VOLT:LEV MIN"
! set output to minimum cal value
WAIT 2
! allow output to settle
OUTPUT @Dmm;"MEAS:VOLT:DC?"
! measure output with Dmm and
ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
PRINT Dmm_rdg
73
3
Chapter 3 Calibration Procedures
Calibration Program
continued
880
OUTPUT @Pwrsupply;"CAL:VOLT:DATA ";Dmm_rdg ! send stored value to Power Supply
890
OUTPUT @Pwrsupply;"CAL:VOLT:LEV MID"
! set output to middle cal value
900
WAIT 2
! allow output to settle
910
OUTPUT @Dmm;"MEAS:VOLT:DC?"
! measure output with Dmm and
920
ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
930
PRINT Dmm_rdg
940
OUTPUT @Pwrsupply;"CAL:VOLT:DATA ";Dmm_rdg ! send stored value to Power Supply
950
OUTPUT @Pwrsupply;"CAL:VOLT:LEV MAX"
! set output to maximum cal value
960
WAIT 2
! allow output to settle
970
OUTPUT @Dmm;"MEAS:VOLT:DC?"
! measure output with Dmm and
980
ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
990
PRINT Dmm_rdg
1000 OUTPUT @Pwrsupply;"CAL:VOLT:DATA ";Dmm_rdg ! send stored value to Power Supply
1010 OUTPUT @Pwrsupply;"OUTP OFF"
1020 OUTPUT @Pwrsupply;"SYST:ERR?"
1030 ENTER @Pwrsupply;Error$
1040 !
1050 ! Check to see if there is an error. If there is an error,
1060 ! display the error and exit the program.
1070 !
1080 CLEAR SCREEN
1090 IF Error$="+0,""No error""" THEN
1100
PRINT "Voltage calibration completed for Power Supply "
1110 ELSE
1120
PRINT "ERROR:";Error$;"Voltage not Calibrated"
1130
BEEP
1140
GOTO 2250
1150 END IF
1160 PRINT TABXY(10,5),"VOLTAGE CALIBRATION COMPLETE"
1170 PRINT TABXY(10,7),"BEGIN OVP CALIBRATION"
1180 WAIT 4
1190 CLEAR SCREEN
1200 OUTPUT @Pwrsupply;"OUTP ON"
! Turn on Power Supply output
1210 OUTPUT @Pwrsupply;"CAL:VOLT:PROT"
! Perform OVP circuit calibration
1220 WAIT 9
! Allow OVP calibration to finish
1230 OUTPUT @Pwrsupply;"OUTP OFF"
! Turn off Power Supply output
1240 OUTPUT @Pwrsupply;"SYST:ERR?"
1250 ENTER @Pwrsupply;Error$
1260 !
1270 ! Check to see if there is an error. If there is an error,
1280 ! display the error and exit the program.
1290 !
1300 CLEAR SCREEN
1310 IF Error$="+0,""No error""" THEN
1320
PRINT "OVP calibration completed for Power Supply "
1330 ELSE
1340
PRINT "ERROR:";Error$;"OVP not Calibrated"
1350
BEEP
1360
GOTO 2250
1370 END IF
74
Chapter 3 Calibration Procedures
Calibration Program
continued
1380 CLEAR SCREEN
1390 PRINT TABXY(10,5),"DAC ERROR CORRECTION AND VOLTAGE/OVP CALIBRATION COMPLETE"
1400 WAIT 4
1410 !
1420 ! Perform the Current calibration and OCP calibration. Alert the operator to
1430 ! hook up the connection before calibrating.
1440 !
1450 ! Alert operator to connect lead
1460 PRINT TABXY(10,10),"*********************************************************"
1470 PRINT TABXY(10,11)," Connect a CURRENT SHUNT to the Dmm input for measuring"
1480 PRINT TABXY(10,12)," current. Connect the output to the shunt. Observe Polarity!"
1490 PRINT TABXY(10,13),"*********************************************************"
1500 PRINT TABXY(10,15),"Press 'C' to Continue, or 'X' to eXit, then 'Enter':"
1510 Ch$="C"
1520 INPUT Ch$
1530 IF Ch$="X" OR Ch$="x" THEN GOTO 2250
1540 OUTPUT @Pwrsupply;"OUTP ON"
! Turn on Power Supply output
1550 CLEAR SCREEN
1560 PRINT TABXY(10,7),"BEGIN CURRENT/OCP CALIBRATION"
1570 WAIT 4
1580 CLEAR SCREEN
1590 OUTPUT @Pwrsupply;"CAL:CURR:LEVel MIN"
! set output to minimum cal value
1600 WAIT 2
! allow output to settle
1610 OUTPUT @Dmm;"MEAS:VOLT:DC? "
! measure output with Dmm and
1620 ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
1630 Dmm_rdg=Dmm_rdg/Current_shunt
! scale reading to amps
1640 PRINT Dmm_rdg
1650 OUTPUT @Pwrsupply;"CAL:CURR:DATA ";Dmm_rdg ! send stored value to Power Supply
1660 OUTPUT @Pwrsupply;"CAL:CURR:LEVel MID"
! set output to middle cal value
1670 WAIT 2
! allow output to settle
1680 OUTPUT @Dmm;"MEAS:VOLT:DC? "
! measure output with Dmm and
1690 ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
1700 Dmm_rdg=Dmm_rdg/Current_shunt
! scale reading to amps
1710 PRINT Dmm_rdg
1720 OUTPUT @Pwrsupply;"CAL:CURR:DATA ";Dmm_rdg ! send stored value to Power Supply
1730 OUTPUT @Pwrsupply;"CAL:CURR:LEVel MAX"
! set output to maximum cal value
1740 WAIT 2
! allow output to settle
1750 OUTPUT @Dmm;"MEAS:VOLT:DC?"
! measure output with Dmm and
1760 ENTER @Dmm;Dmm_rdg
! store in variable Dmm_rdg
1770 Dmm_rdg=Dmm_rdg/Current_shunt
! scale reading to amps
1780 PRINT Dmm_rdg
1790 OUTPUT @Pwrsupply;"CAL:CURR:DATA ";Dmm_rdg ! send stored value to Power Supply
1800 OUTPUT @Pwrsupply;"OUTP OFF"
! Turn off Power Supply output
1810 OUTPUT @Pwrsupply;"SYST:ERR?"
1820 ENTER @Pwrsupply;Error$
1830 !
1840 ! Check to see if there is an error. If there is an error,
1850 ! display the error and exit the program.
75
3
Chapter 3 Calibration Procedures
Calibration Program
continued
1860
1870
1880
1890
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
2020
2030
2040
2050
2060
2070
2080
2090
2100
2110
2120
2130
2140
2150
2160
2170
2180
2190
2200
2210
2220
2230
2240
2250
2260
2270
2280
2290
!
CLEAR SCREEN
IF Error$="+0,""No error""" THEN
PRINT "Current calibration completed for Power Supply "
ELSE
PRINT "ERROR:";Error$;"Current not Calibrated"
BEEP
GOTO 2250
END IF
CLEAR SCREEN
PRINT TABXY(10,5),"CURRENT CALIBRATION COMPLETE"
PRINT TABXY(10,7),"BEGIN OCP CALIBRATION"
WAIT 4
CLEAR SCREEN
OUTPUT @Pwrsupply;"OUTP ON"
! Turn on Power Supply output
OUTPUT @Pwrsupply;"CAL:CURR:PROT"
! Perform OCP calibration
WAIT 9
! Allow OCP calibration to finish
OUTPUT @Pwrsupply;"OUTP OFF"
! Turn off Power Supply output
OUTPUT @Pwrsupply;"SYST:ERR?"
ENTER @Pwrsupply;Error$
!
! Check to see if there is an error. If there is an error,
! display the error and exit the program.
!
CLEAR SCREEN
IF Error$="+0,""No error""" THEN
PRINT "OCP calibration completed for Power Supply "
ELSE
PRINT "ERROR:";Error$;"OCP not Calibrated"
BEEP
GOTO 2250
END IF
CLEAR SCREEN
PRINT TABXY(10,5),"CURRENT/OCP CALIBRATION COMPLETE"
!
! Create a time stamp and output to power supply
!
Cal_msg$="Last Calibrated "&DATE$(TIMEDATE)&" "&TIME$(TIMEDATE)
OUTPUT @Pwrsupply;"CAL:STR """;Cal_msg$;""""
OUTPUT @Pwrsupply;"CAL:SEC:STAT ON, ";Sec_code$
OUTPUT @Pwrsupply;"VOLT:PROT:STAT ON"
OUTPUT @Pwrsupply;"CURR:PROT:STAT ON"
DISP "Calibration terminated. "
END
End of Program
76
4
4
Theory of Operation
Theory of Operation
This chapter provides block diagram level descriptions of the power supply.
The descriptions provide a basic understanding of circuit operation and are
intended as an aid in troubleshooting. It is assumed in the following discussions
that you are familiar with the operating and programming instructions
presented in the E3632A User's Guide. Subjects covered include the following:
•
•
•
•
•
•
•
•
78
Block Diagram Overview, page 79
AC Input and Bias Supplies, page 81
Floating Logic, page 82
D-to-A Converter, page 84
A-to-D Converter, page 85
Power Mesh and Control, page 86
Earth-Referenced Logic, page 88
Front Panel, page 88
Chapter 4 Theory of Operation
Block Diagram Overview
Block Diagram Overview
This discussion pertains to the block diagram on the next page. The power
supply's circuitry is divided into two major blocks: the floating circuitry and
the ground referenced circuitry. All power mesh and control circuits, display
circuit, and digital circuits are contained in the floating circuitry. This circuitry
also contains the power supply's main controller. The earth referenced
circuitry provides the interface between the user and the power supply.
The floating circuitry can be viewed in four pieces; the DAC system, the digital
logic section (floating logic), the power mesh and control section, and the front
panel (display and keyboard) section.
The floating logic receives digital signals from the earth-referenced logic and
the DAC converts them to analog signals which are sent to the power control
circuits in order to program the power supply's output voltage and current.
The power supply can also be commanded to send measurement and status
data back to the remote interface controller and/or the VFD (vacuum
fluorescent display) display on the front panel. The data is processed and sent
back via the floating logic and earth-referenced logic.
The power mesh and control circuits contains voltage and current control
circuits which allows the power supply to operate in either the constant voltage
(CV) or constant current (CC) mode. The control circuits compare the power
supply's output voltage or current with the programmed value and generates
a control signal which varies the conduction of the series pass transistor to
raise or lower the output as required.
The front panel circuits consist of VFD control, display high voltage drivers,
and keyboard scanning. Communication between the front panel and floating
logic circuits is accomplished through a 4-wire bi-directional serial interface.
The earth referenced circuitry uses a controller configured as a slave to the
main controller. This controller establishes external I/O communication with
the main controller through a bi-directional, optically isolated, serial
communications link. The earth referenced controller controls low-level GPIB
(IEEE-488) and RS-232 interface operation.
Separate reference and bias supplies are provided for the floating and ground
reference circuitry. The front panel operates from the floating circuitry with
its logic common different from the main controller logic common.
79
4
Chapter 4 Theory of Operation
Block Diagram Overview
Block Diagram
80
Chapter 4 Theory of Operation
AC Input and Bias Supplies
AC Input and Bias Supplies
Referring to the schematic shown on page 121 and 122, the ac mains are
connected by a fused power module. This module incorporates the functions
of mains connection, fusing, and line voltage selection (100/115/230 Vac). The
line voltage selection function of the module selects which primary winding
of power transformer is energized. The transformer secondary windings are
connected to the main pc board through connectors.
The bias supplies are consists of four sections; +5 Vdc and -5.1 Vdc for the
power circuits and floating logic; ±17.4 Vdc for the display; and +5 Vdc for the
earth referenced logic. Power-on reset signals are provided by the +5 Vdc
supply of the floating logic.
The ±17.4 Vdc for the display circuits are produced by rectifier CR4, filter
capacitors C19 and C24, and voltage regulators U12 and U16. A separate
winding of transformer provides a center tapped 6 Vrms filament supply for
the display.
The floating +5 Vdc is produced from the separate winding of transformer. The
+5_REF signal is derived from +15 Vdc supply and the TURN_ON RESET signal
is derived from +5 Vdc supply. The FAN FAIL signal is asserted when the fan
current through R15 is not detected. The TURN_ON RESET signal holds the
main controller and other logic in a reset state until the +5 Vdc logic power is
fully operational. This signal is generally active only following application of
line power to the instrument.
The +5V dc earth referenced supply is produced by rectifier CR7, filter
capacitor C21, and regulator U10. The GPIB (IEEE-488) and RS-232 computer
interfaces are powered from this supply.
81
4
Chapter 4 Theory of Operation
Floating Logic
Floating Logic
Referring to the schematic shown on page 124, the floating common logic
controls operation of the entire instrument. All output functions and bus
command interpretation is performed in the main controller U17. The front
panel and the earth referenced logic operate as slaves to U17. The floating
common logic is comprised of the main controller U17, custom gate array U16,
the program ROM U13, RAM U14, calibration EEPROM U15, and the 12 MHz
clock oscillator. Non-volatile EEPROM U15 stores calibration constants,
calibration secure code, and calibration count, and store/recall variables.
Power-on reset is provided to the main controller by the voltage regulator U11.
The main controller U17 is a 16-bit micro controller. It controls such features
as receive and transmit serial port, timer/counter ports, an 8-bit pulse width
modulated DAC port, and selectable input 10-bit successive approximation ato-d convert ports. A conventional address/data bus is used to transfer data
between the main controller and external ROM and RAM. When the address
latch enable (ALE) signal goes high, address data is present on the address/
data bus. ASIC U18 latches the address data and decodes the correct chip
enable (low true) for external ROM and RAM accesses and for read/write
accesses to the internal registers of U18. The system memory map is shown
below.
0000H - 1FF7H
1FF8H - 1FFFH
2000H - FFFFH
U15
U16
U14
32k x 8 RAM
Gate Array
Program ROM
Program ROM U13 contains four 64k x 8 data banks of data. Banks are selected
by controlling A16 and A17 ROM address bits directly from the main controller
port bits.
Custom gate array U18 performs address latching and memory map decoding
functions as discussed above. In addition, U18 contains a variety of internal
read/write registers. The read (XRD) and write (XWR) signals transfer data out
of and into U18 when it is addressed. There are four internal registers in U18:
an internal configuration register, an 8 bit counter register, a serial transmit/
receive register, and an internal status register.
The counter register is used to capture the ADC slope count at the COMP input.
The COMP input functions as both a clocked comparator and the slope counter
input for the ADC. In both cases the counter register captures the lower 8 bits
of a 24-bit counter. The upper 16 bits of the count are captured by the SYNC
input to U17.
82
Chapter 4 Theory of Operation
Floating Logic
The serial register is used to send and receive serial data bytes from the main
controller to the DAC system, or to communicate with the front panel
controller. The serial register is multiplexed to these two circuits. The
transmission rate is selected to 1.5 M bits/second for the DAC system and 93.75
k bits/second for communication with the front panel controller. The general
serial interface is a 3-bit interface as shown below.
U18 Internal Signal
Configuration Signals
Front Panel Signals
Serial Clock
Data OUT (send)
Data IN (receive)
SERCK
SERDAT
SERRBK
XFPSK
FPDI
FPDO
Serial data is received simultaneously as serial data is clocked out. Front panel
data is exchanged in both directions whenever a byte is sent from U18. The
input data of DAC is strobed to outputs by U17 signal SERSTB. Interrupts from
the front panel are detected by U18 and signaled to the CHINT. The main
controller FPINT signals the front panel controller that U18 has data to send.
The power supply's calibration data are stored in a 256 x 16 bit non-volatile
electrically erasable ROM U15. This non-volatile ROM read/write data is
accessed by a 4-bit serial protocol controlled by U17.
The main controller has an on-chip 10-bit successive approximation ADC. The
FLASH input is used to sample the residual charge on the main integrating ADC
output of U26.
Port bits are also configured to measure the input power line frequency
(LSENSE). Frequencies from 55 Hz to 66 Hz are measured as 60 Hz. All other
line input frequencies are assumed to be 50 Hz.
The main controller communicates with the earth referenced controller U4
through an optically isolated (U6 and U7) asynchronous serial link. Data is sent
in an 11-bit frame at a rate of 187.5 k bits/ second. When the RS-232 interface
is selected, data is sent across the isolated link at 93.75 k bits/second. The 11bit data frame is configured for one start bit, eight data bits, one control bit,
and one stop bit.
83
4
Chapter 4 Theory of Operation
D-to-A Converter
D-to-A Converter
Referring to the schematic shown on page 123, all reference voltages of power
circuits are derived from the internal voltage reference of system DAC U21.
The system DAC track/hold amplifier outputs are used to provide controllable
reference voltages to three power circuits. The system DAC is programmed
and responds to the main controller via internal 3-wire serial data bus SERCLK,
SERRBK, and SERSTB. The system DAC is mutiplexed to 6 track/hold
amplifiers through U27. Each track/hold amplifier is refreshed approximately
every 1 msec to maintain its output setting. Changes to track/hold amplifier
outputs are accomplished by dwelling on that position for an extended period.
84
Chapter 4 Theory of Operation
A-to-D Converter
A-to-D Converter
Referring to the schematic shown on page 123, the analog-to-digital converter
(ADC) is used to change dc voltages into digital information. The circuitry
consists of an integrator amplifier (U26 and U29), current steering switch U33,
resistors (R70, R71, and R96), voltage reference U32, ADC controller U18, and
residue ADC U17.
The ADC method used by the Agilent E3632A is called multislope III.
Multislope III is a charge balancing continuously integrating analog-to-digital
converter. The input voltage continuously forces charge onto the integrator
capacitors C49 and C51 through R71.
Switch U33 steers fixed positive or negative reference currents onto the
integrator capacitors to cancel, or balance the accumulated input charge. The
level shifted (R97 and R98) output of the integrator is checked every 2.66 sec
by the U18 COMP input. Logic state machines in U18 control the U33 current
steering to continuously seek an approximate 2.5 V level on the integrator
amplifier output, FLASH. If the ADC input voltage is between 15 V, the
integrator output (FLASH) will remain within the 0 V to 5 V range of the U17
on-chip ADC. The U17 ADC input (FLASH) is clamped to 0 V or 5 V by R53 and
CR16 to protect U17.
The integrator amplifier is formed by U26 and U29. Resistors R61 and R62
affect the amplifier stability. Amplifier oscillation may occur if their values are
incorrect. Amplifier U29 improves the offset voltage characteristics of
integrator amplifier U26.
Each analog-to-digital conversion occurs continuously. The ADC starts by
clearing the integrator slope count in U18. At the end of the integration period,
the slope count is latched. The slope count provides the most significant bits
of the input voltage conversion. The least significant bits are converted by the
on-chip ADC of U17.
U39 provides a stable +5 V reference voltage for ADC. U32A amplifies the
voltage reference to +10 V while amplifier U32B inverts the +10 V reference to
-10 V. The reference voltage forces precision slope currents for the integrating
ADC through R70 and R96.
85
4
Chapter 4 Theory of Operation
Power Mesh and Control
Power Mesh and Control
Refer to the schematics shown on page 121.
For the power mesh and control circuit, a preregulator is added ahead of the
series pass transistor to minimize the power dissipated in the series pass
transistor by controlling the dc level across the input filter capacitor,
depending on the output voltage.
To achieve this, tap switching is accomplished by a SCR and one bridge diode
and the SCR control circuit in each power circuit; CR14, CR17, CR18, CR19,
and CR11. By turning on or off the SCR, these circuits allow the input
capacitors (C36, C65, and C46) to charge to one of two discrete voltage levels,
depending on the output voltage required. When the SCR is not fired, the bridge
diode conducts and the low voltage of two discrete voltage levels is developed
across the input filter capacitors.
The SCR control circuit determines whether SCR is to be fired by monitoring
the output voltage and comparing this value against internally derived
reference levels.
The series pass transistor is part of a feedback loop which consists of the driver
and the Constant Voltage/Constant Current error amplifier. The feedback loop
provides "fine and fast" regulation of the output while the preregulator
feedback loop handles large, relatively slow, regulation demands.
The series pass transistor is made to alter its conduction to maintain a constant
output voltage or current. The voltage developed across the current sampling
resistors is the input to the constant current error amplifier. The constant
voltage error amplifier obtains its input from differential amplifier which
senses the output voltage. Any changes in output voltage or current are
detected and amplified by the constant voltage or constant current error circuit
and applied to the series pass transistor in the correct phase and amplitude to
counteract the change in output voltage or current.
86
Chapter 4 Theory of Operation
Power Mesh and Control
Two error amplifiers are included in a CV/CC supply, one for controlling output
voltage, the other for controlling output current. Since the constant voltage
amplifier tends to achieve zero output impedance and alters the output current
whenever the load resistance changes, while the constant current amplifier
causes the output impedance to be infinite and changes the output voltage in
response to any load resistance change, it is obvious that the two amplifiers
can not operate simultaneously. For any given value of load resistance, the
power supply must act either as a constant voltage source or as a constant
current source - it can not be both; transfer between these two modes is
accomplished at a value of load resistance equal to the ratio of the output
voltage control setting to the output current control setting.
Full protection against any overload condition is inherent in the Constant
Voltage/Constant Current design principle since there is not any load condition
that can cause an output which lies outside the operating region. For either
constant voltage or constant current operation, the proper choice of front
panel voltage and current limit settings insures optimum protection for the
load device as well as full protection for the power supply.
The diodes connected across the output terminals in reverse polarity protect
the output electrolytic capacitor and the series pass transistors from the effects
of a reverse voltage applied across the output terminals.
87
4
Chapter 4 Theory of Operation
Earth-Referenced Logic
Earth-Referenced Logic
Referring to the schematic shown on page 125, the earth referenced logic
circuits schematic provides all rear panel input/output capability.
Microprocessor U4 handles GPIB (IEEE-488) control through bus interface
chip U3 and bus receiver/driver chips U1 and U2. The RS-232 interface is also
controlled through microprocessor U4. RS-232 transceiver chip U17 provides
the required level shifting to approximate ±9 volt logic levels through on-chip
charge-pump power supplies using C5 and C15. Communication between the
earth referenced logic interface circuits and the floating logic is accomplished
through an optically-isolated bi-directional serial interface. Isolator U7 couples
data from U4 to processor U17. Isolator U6 couples data from U17 to
microprocessor U4.
Front Panel
Referring to the schematic shown on page 127, the front panel circuits consist
of vacuum fluorescent display control, display high voltage drivers, and
keyboard scanning. Communication between the front panel and floating logic
circuits is accomplished through a 4-wire bi-directional serial interface. The
main controller U17 can cause a hardware reset to front-panel controller by
signal IGFPRES. The front panel logic operates from -12.4 volts (logic 1) and 17.4 volts (logic 0). The front panel logic high supply (-12.4 volts) is produced
by the -17.4 volts bias supply and the voltage regulator U2 on the front panel
board. The four serial communication signals are level shifted by the
comparator U8 from the floating logic 0 V to 5 V levels to the -17.4 V to -12.4 V
levels present on the front panel assembly. U6 acts as the serial shift register
interface for the front-panel controller U7 on the front panel board.
Display anode and grid voltages are +17.4 volts for an "on" segment and -17.4
volts for an "off" segment. The -11.2 V cathode bias for the display is provided
by filament winding center tap bias circuit VR1, R18, and C25 on the main
board. Keyboard scanning is accomplished through a conventional scanned
row-column key matrix. Keys are scanned by outputing data at front-panel
controller U7 port pins P0.0 through P0.3 to poll each key column for a key
press. Column read-back data are read by the microprocessor at port pins P1.0
through P1.3 for decoding and communication to the floating logic circuits.
88
5
5
Service
Service
This chapter discusses the procedures involved for returning a failed power
supply to Agilent Technologies for service or repair. Subjects covered include
the following:
•
•
•
•
•
•
•
•
•
90
Operating Checklist, page 91
Types of Service Available, page 92
Repacking for Shipment, page 93
Electrostatic Discharge (ESD) Precautions, page 94
Surface Mount Repair, page 94
To Replace the Power-Line Fuse, page 94
To Disconnect the Output Using an External Relay, page 95
Troubleshooting Hints, page 96
Self-Test Procedures, page 98
Chapter 5 Service
Operating Checklist
Operating Checklist
Before returning your power supply to Agilent Technologies for service or
repair check the following items:
Is the Power Supply Inoperative?
Verify that the ac power cord is connected to the power supply.
Verify that the front-panel power switch is depressed.
Verify that the power-line fuse is installed:
Use the 4 AT, 250 V fuse for 100 or 115 Vac operation.
Use the 2.5 AT, 250 V fuse for 230 Vac operation.
Verify the power-line voltage setting.
See "To prepare the power supply for use" on page 23.
Does the Power Supply Fail Self-Test?
Verify that the correct power-line voltage is selected.
See "To prepare the power supply for use" on page 23.
Remove all load connections to the power supply.
Ensure that all terminal connections are removed while the self-test is
performed.
91
5
Chapter 5 Service
Types of Service Available
Types of Service Available
If your power supply fails within three years of original purchase, Agilent
Technologies will repair or replace it free of charge. If your unit fails after your
three year warranty expires, Agilent will repair or replace it as a very
competitive price. Agilent will make the decision locally whether to repair or
replace your unit.
Standard Repair Service (worldwide)
Contact your nearest Agilent Technologies Service Center. They will arrange
to have your power supply repaired or replaced.
Express Exchange (U.S.A. only)
You can receive a replacement Agilent E3632A via overnight shipment for low
downtime.
1 Call 1-800-258-5165 and ask for "Express Exchange."
• You will be asked for your shipping address and a credit card number to
guarantee return of your failed power supply.
• If you do not return your failed power supply within 45 days, your credit
card will be billed for a new Agilent E3632A.
• If you choose not to supply a credit card number, you will be asked to send
your failed unit to a designated Agilent Service Center. After the failed unit
is received, Agilent will send your replacement unit.
2 Agilent will immediately send a replacement Agilent E3632A to you via
overnight shipment.
• The replacement unit will have a different serial number than your failed
unit.
• If you can not accept a new serial number for the replacement unit, use the
Standard Repair Service option described above.
92
Chapter 5 Service
Repacking for Shipment
• If your failed unit was "in-warranty,'' your replacement unit continues the
original three year warranty period. You will not be billed for the
replacement unit as long as the failed unit is received by Agilent.
• If your three year warranty has expired, Agilent Technologies will bill you
for the Agilent E3632A exchange price - less than a new unit price. Agilent
warrants exchange units against defects for 90 days.
Repacking for Shipment
For the Express Exchange Service described on the previous page, return your
failed Agilent E3632A to the designated Agilent Service Center using the
shipping carton of the exchange unit. A shipping label will be supplied. Agilent
will notify you when your failed unit has been received.
If the instrument is to be shipped to Agilent for service or repair, be sure to:
• Attach a tag to the power supply identifying the owner and indicating the
required service or repair. Include the instrument model number and full
serial number.
• Place the power supply in its original container with appropriate packaging
material.
• Secure the container with strong tape or metal bands.
If the original shipping container is not available, place your unit in a container
which will ensure at least 4 inches of compressible packaging material around
all sides for the power supply. Use static-free packaging materials to avoid
additional damage to your unit.
Agilent Technologies recommends that you always insure shipments.
93
5
Chapter 5 Service
Electrostatic Discharge (ESD) Precautions
Electrostatic Discharge (ESD) Precautions
Almost all electrical components can be damaged by electrostatic discharge
(ESD) during handling. Component damage can occur at electrostatic
discharge voltages as low as 50 volts.
The following guidelines will help prevent ESD damage when serving the
power supply or any electronic device.
•
•
•
•
•
•
Disassemble instruments only in a static-free work area.
Use a conductive work area to dissipate static charge.
Use a conductive wrist strap to dissipate static charge accumulation.
Minimize handling.
Keep replacement parts in original static-free packaging.
Remove all plastic, styrofoam, vinyl, paper, and other static-generating
materials from the immediate work area.
• Use only anti-static solder suckers.
Surface Mount Repair
Surface mount components should only be removed using soldering irons or
disordering stations expressly designed for surface mount components. Use
of conventional solder removal equipment will almost always result in
permanent damage to the printed circuit board and will void your Agilent
Technologies factory warranty.
To Replace the Power-Line Fuse
The power-line fuse is located within the power supply's fuse-holder assembly
on the rear panel (see on page 24). For 100 or 115 Vac operation, you must use
a 4 AT slow-blow fuse (Agilent part number 2110-0996). For 230 Vac operation,
you must use a 2.5 AT slow-blow fuse (Agilent part number 2110-0999).
94
Chapter 5 Service
To Disconnect the Output Using an External Relay
To Disconnect the Output Using an External Relay
When the output of the E3632A 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. A TTL signal of either low
true or high true is provided to control an external relay. This signal can only
be controlled with the remote command OUTPut:RELay {OFF|ON}. The TTL
output is available on the RS-232 connector pin 1 and pin 9.
When the OUTPut:RELay state is "ON", the TTL output of pin 1 is high (4.5 V)
and pin 9 is low (0.5 V). The levels are reversed when the OUTPut:RELay state
is "OFF".
Note
TTL output of pin 1 or pin 9 of the RS-232 connector is available only after
installing two jumpers inside the power supply. See below for more
information.
Note
Do not use the RS-232 interface if you have configured the power supply to
output relay control signals. Internal components on the RS-232 circuitry
may be damaged.
Installation Procedure
The assembly drawings and schematics are located in chapter 8, "Schematics".
1 Remove the front and rear bumpers and take off the cover (See the mechanical
disassembly drawing on page 119).
2 Install JP3 and JP4 located adjacent to the connector P5 (The JP3 and JP4 are
outlined with a circle in the component locator diagram on page 120). A bare
wire may be used.
3 Reassemble the power supply.
95
5
Chapter 5 Service
Troubleshooting Hints
Troubleshooting Hints
This section provides a brief check list of common failures. Before
troubleshooting or repairing the power supply, make sure that the failure is in
the instrument rather than any external connections. Also make sure that the
instrument is accurately calibrated. The power supply's circuits allow
troubleshooting and repair with basic equipment such as a digit multimeter
and a 100 MHz oscilloscope.
Caution
This instrument contains CMOS integrated circuits which are susceptible
to failure due to electrostatic discharge. Refer to the ``Electrostatic Discharge
(ESD) Precautions'' section earlier in this chapter for further handling
precautions.
Unit is Inoperative
Verify that the ac power cord is connected to the power supply.
Verify that the front-panel power switch is depressed.
Verify that the power-line fuse is installed:
Use the 4 AT, 250 V fuse for 100 or 115 Vac operation..
Use the 2.5 AT, 250 V fuse for 230 Vac operation..
Verify the power-line voltage setting.
See "To prepare the power supply for use" on page 23.
Unit Reports Errors 740 to 750
These errors may be produced if you accidentally turn off power the unit during
a calibration or while changing a non-volatile state of the instrument.
Recalibration or resetting the state should clear the error. If the error persists,
a hardware failure may have occurred.
Unit Fails Self-Test
Verify that the correct power-line voltage setting is selected. Also, ensure that
all terminal connections are removed while the self-test is performed. Failure
of the DAC U21 on the top board will cause many self-test failures.
96
Chapter 5 Service
Troubleshooting Hints
Bias Supplies Problems
Check that the input to the voltage regulators of the bias supplies is at least 1
V greater than their output.
Circuit failures can cause heavy loads of the bias supplies which may pull down
the regulator output voltages.
Check the voltages of bias supplies as tabulated below.
Table 5-1. Bias Supplies Voltages
Bias Supply
+5V Floating
-5.1V Floating
+15V Floating
-15V Floating
Minimum
Maximum
+4.75 V
-4.75 V
+14.25 V
-14.25 V
+5.25 V
-5.25 V
+15.75 V
-15.75 V
Check At
U11 pin 2
Anode of CR5
Anode of CR9
Cathode of CR10
Some circuits produce their own local bias supplies from the main bias
supplies. Be sure to check that these local bias supplies are active. In particular,
the ADC (analog-to-digital converter), ac input, and front panel sections have
local bias supplies. Always check that the power supplies are free of ac
oscillations using an oscilloscope. Failure of bias supplies will cause many selftest failures.
5
97
Chapter 5 Service
Self-Test Procedures
Self-Test Procedures
Power-On Self-Test
Each time the power supply is powered on, a set of self-tests are performed.
These tests check that the minimum set of logic and measurement hardware
are functioning properly. The power-on self-test performs checks 601 through
604 and 624 through 634.
Complete Self-Test
Hold any front panel key except the "Error'' key for more than 5 seconds while
turning on the power to perform a complete self-test. The power supply beeps
when the test starts. The tests are performed in the order shown below.
601
Front Panel Does not respond The main controller U17 on the top board
attempts to establish serial communications with the front panel controller U7
on the front panel board. During this test, U7 turns on all display segments.
Communication must function in both directions for this test to pass. If this
error is detected during power-on self-test, the power supply will beep twice.
This error is only readable from the remote interface.
602
RAM read/write failed This test writes and reads a 55h and AAh checker
board pattern to each address of ram U14. Any incorrect readback will cause
a test failure. This error is only readable from the remote interface.
603
A/D sync stuck The main controller issues an A/D sync pulse to U17 and U18
to latch the value in the ADC slope counters. A failure is detected when a sync
interrupt is not recognized and subsequent time-out occurs.
604
A/D slope convergence failed The input amplifier is configured to the
measure zero (MZ) state in the 10 V range. This test checks whether the ADC
integrator produces nominally the same number of positive and negative slope
decisions (±10%) during a 20 ms interval.
605
Cannot calibrate rundown gain This test checks the nominal gain between
integrating ADC and the U17 on-chip ADC. This error is reported if the
procedure can not run to completion due to a hardware failure.
98
Chapter 5 Service
Self-Test Procedures
606
Rundown gain out of range This test checks the nominal gain between the
integrating ADC and the U17 on-chip ADC. The nominal gain is checked to
±10% tolerance.
607
Rundown too noisy This test checks the gain repeatability between the
integrating ADC and the U17 on-chip ADC. The gain test (606) is performed
eight times. Gain noise must be less that ±64 lsb's of the U17 on-chip ADC.
608
Serial configuration readback failed This test re-sends the last 3 byte
serial configuration data to all the serial path (SERDAT, SERBCK, SERCLK).
The data is then clocked back into U18 on the top board and compared against
the original 3 bytes sent. A failure occurs if the data do not match. This tests
checks the serial data path through U22.
624
Unable to sense line frequency This test checks that the LSENCE logic
input U17 is togging. If no logic input detected, the power supply will assume
a 50 Hz line operation for all future measurements.
625
I/O processor did not respond This test checks that communications can
be established between U17 and U4 through the optically isolated (U6 and U7)
serial data link. Failure to establish communication in either direction will
generate an error. If this condition is detected at power-on self-test, the power
supply will beep and the error annunciator will be on.
626
I/O processor failed self-test This test causes the earth referenced
processor U4 to execute an internal, ram test. Failure will generate an error.
630
Fan test failed This test checks if the fan current is flowing. If the current
is not detected at power-on self-test, the power supply will beep and the error
annunciator will be on.Fan test fail could likely induce overtemperature
condition in the power supply.
631
System DAC test failed This test checks if the DAC hardware is functional.
The main controller U17 sends a reference voltage data to DAC and converts
the DAC output to digital data to see if the digital data is within a valid range.
632
Hardware test failed This test checks the the status of voltage and current
error amplifiers for the power circuit. If both amplifiers are not operational,
the power supply will beep and the error annunciator will be on.
99
5
Chapter 5 Service
Self-Test Procedures
100
6
6
Replaceable Parts
Replaceable Parts
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102
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
E3632-60002 Main PC Assembly
Reference
Designator
Agilent Part
Number
Qty
Part Description
Mfr.
Code
C1
0180-4228
C2-6
0160-6497
C7-8
0160-6225
2
C9-12
0160-6497
1
CAP-FXD 47uF +-20% 10V TA
12340
T491D476M010AS
42
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C13
0180-3751
C14-15
0160-6497
4
C16
0180-3643
C17-18
0160-7746
C19
0180-4853
2
C20
0160-6497
Mfr. Part Number
CAP-FXD 0.33uF +-10% 250V POLYE-MET
06127
MKS4-.33/250/10
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
CAP-FXD 1uF +-20% 35V TA
12340
T491B105M035AS
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
1
CAP-FXD 470uF +-20% 25V AL-ELCTLT
06360
SME25VB471M10X16LL
2
CAP-FXD 0.33uF +- 5% 25V CER X7R
02010
12103C334JATMA
06360
KMG1H222H
12340
C1206C104K5RAC
C21
0180-4854
CAP-FXD 2200uF +-20% 35V AL-ELCTLT
06360
KMG1V222H
C22
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C23
0180-4854
CAP-FXD 2200uF +-20% 35V AL-ELCTLT
06360
KMG1V222H
C24
0180-4853
CAP-FXD 2200uF +-20% 50V AL-ELCTLT
06360
KMG1H222H
C25-26
0180-4116
2
CAP-FXD 22uF +-20V TA
12340
T491D226M020AS
C27-29
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C30-31
0160-5947
2
CAP-FXD 1000pF +-10% 50V CER X7R
06352
C2012X7R1H102K
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
2
CAP-FXD 0.33uF +-20% 50V CER Z5U
12340
C1210C334M5UAC
CAP-FXD 1uF +-20% 35V TA
12340
T491B105M035AS
C32
0160-6497
C33
0160-6940
C34-35
0180-3751
C36
0180-4855
C37
0160-6497
C38
0160-6940
C39
0160-5550
C40-43
0160-6497
C44
0160-6736
C45
0160-6497
C46
C47
2
CAP-FXD 2200uF +-20% 50V AL-ELCTLT
CAP-FXD 0.1uF +-10% 50V CER X7R
CAP-FXD 1000uF +-20% 80V AL-ELCTLT
01542
0180-4855
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
CAP-FXD 0.33uF +-20% 50V CER Z5U
12340
C1210C334M5UAC
CAP-FXD 0.1 uF +-5% 100V POLYC-MET
10200
MC1-9196J
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
CAP-FXD 0.01uF +-10% 50V CER X7R
12340
C1206C103K5RAC
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
0180-4855
CAP-FXD 1000uF +-20% 80V AL-ELCTLT
01542
0180-4855
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C48
0160-6736
C49
0160-5954
C50
3
1
4
CAP-FXD 0.01uF +-10% 50V CER X7R
12340
C1206C103K5RAC
CAP-FXD 220pF +-5% 50V CER C0G
12340
C0805C221J5GAC
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C51
0160-5954
CAP-FXD 220pF +-5% 50V CER C0G
12340
C0805C221J5GAC
C52-55
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C56
0180-3744
CAP-FXD 4.7uF +- 20% 10V TA
12340
T491B475M010AS
4
1
103
6
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designator
Agilent Part
Number
C57-58
0160-6497
C59-64
0160-5892
C65
Part Description
Mfr.
Code
Mfr. Part Number
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
CAP-FXD 0.22uF +-10% 63V POLYE-MET
11892
MMK5224K63L6
0180-4855
CAP-FXD 1000uF +-20% 80V AL-ELCTLT
01542
0180-4856
C66-67
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C68
0180-3751
CAP-FXD 1uF +-20% 35V TA
12340
T491B105M035AS
C69
0160-5944
CAP-FXD 0.047uF +-10% 50V CER X7R
12340
C0805C473K5RAC
C70
0160-6736
CAP-FXD 0.01uF +-10% 50V CER X7R
12340
C1206C103K5RAC
C71-75
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C76
0160-7061
CAP-FXD 2200pF +-10% 50V CER X7R
12340
C0805C222K5RAC
C77
0160-5944
CAP-FXD 0.047uF +-10% 50V CER X7R
12340
C0805C473K5RAC
C78
0160-6736
CAP-FXD 0.01uF +-10% 50V CER X7R
12340
C1206C103K5RAC
C79
0160-7711
CA-FXD 4700pF +-10% 50V CER X7R
12340
C0603C472K5RAC
C80
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C81
0160-5956
CAP-FXD 56pF +-5% 50V CER C0G
12340
C0805C560J5GAC
C82
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C83
0160-6727
CAP-FXD 0.033uF +-10% 50V CER X7R
09939
GRM42-6X7R333K50V
C84
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C85
0160-5954
CAP-FXD 220pF +-5% 50V CER C0G
12340
C0805C221J5GAC
C86
0160-6497
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C87
0160-5954
CAP-FXD 220pF +-5% 50V CER C0G
12340
C0805C221J5GAC
C88-89
0180-3469
2
CAP-FXD 100uF +-20% 35V AL-ELCTLT
06360
KME35VB101M8X11LL
C91
0160-4065
1
CAP-FXD 0.1uF +-20% 250V PPR-MET
11892
PME271M610M
C92-93
0160-4183
2
CAP-FXD 1000pF +-20% 250V PPR-MET
11892
PME271Y410M
C94
0180-4235
1
CAP-FXD 470uF +-20% 50V AL-ELCTLT
06360
KME50VB471M12X20LL
C95
0160-4535
1
CAP-FXD 1uF +-10% 50V CER X7R
12340
C330C105K5R5CA
C96
0160-5957
1
CAP-FXD 47pF +-5% 50V CER C0G
02010
08055A470JATA
C97-99
0160-5959
3
CAP-FXD 33pF +-5% 50V CER C0G
02010
08055A330JATA
C100
0160-5967
CAP-FXD 100pF +-5% 50V CER C0G
02010
08055A100JATA
C101
0160-6497
1
CAP-FXD 0.1uF +-10% 50V CER X7R
12340
C1206C104K5RAC
C102
0160-3237
1
CAP-FXD 0.1uF +-20% 50V CER Z5U
01542
RPE132Z5U104M50
CR1-2
1906-0291
10
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR3-4
1906-0407
3
DIODE-FW BRDG 400V 1A
04504
DF04S
CR5
1902-0579
3
DIODE-ZNR 5.1V 5% PD=1W IR=10UA
02037
1N4733ARL
CR6
1902-0651
1
DIODE-ZNR 9.1V 5% PD=1W IR=10UA
01542
1902-0651
CR7
1906-0407
DIODE-FW BRDG 400V 1A
04504
DF04S
CR8
1902-1542
1
DIODE-ZNR 6.2V 5% TO-236 (SOT-23)
06337
BZX84C6V2
CR9-10
1902-1570
2
DIODE-ZNR 2.4V 5% TO-236 (SOT-23)
03334
BZX84-C2U4
CR11
1906-0400
1
DIODE-FW BRDG 600V 6A
04504
GBU8J
104
Qty
6
2
1
1
1
1
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designator
Agilent Part
Number
Qty
Part Description
Mfr.
Code
Mfr. Part Number
CR12
1901-1227
6
DIODE SWITCHING 75V 200MA 6NS TO-236
02910
BAS16
CR13
1901-1335
4
DIODE-PWR RECT 400V 1A 50NS
02037
MURS140T3
CR14
1884-0332
5
THYRISTOR-SCR TO-220AB VRRM=200
02037
MCR264-00
CR15
1901-1335
DIODE-PWR RECT 400V 1A 50NS
02037
MURS140T3
CR16
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR17-19
1884-0332
THYRISTOR-SCR TO-220AB VRRM=200
02037
MCR264-00
CR20
1901-1335
DIODE-PWR RECT 400V 1A 50NS
02037
MURS140T3
CR21-22
1901-1227
DIODE SWITCHING 75V 200MA 6NS TO-236
02910
BAS16
CR24
1901-1335
DIODE-PWR RECT 400V 1A 50NS
02037
MURS140T3
CR23
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR25
1902-0579
DIODE-ZNR 5.1V 5% PD=1W IR=10UA
02037
1N4733ARL
CR26
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR27
1901-1227
DIODE SWITCHING 75V 200MA 6NS TO-236
02910
BAS16
CR28
1884-0332
THYRISTOR-SCR TO-220AB VRRM=200
02037
MCR264-00
CR29
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR30
1902-0579
DIODE-ZNR 5.1V 5% PD=1W IR=10UA
02037
1N4733ARL
CR31
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR32-33
1901-1227
DIODE SWITCHING 75V 200MA 6NS TO-236
02910
BAS16
CR34-36
1906-0291
DIODE-DUAL 70V 100MA TO-236AA
02037
BAV99LT1
CR37-38
1906-0261
2
DIODE-CT-RECT 150V 16A
02037
E1
9164-0173
1
ALARM-AUDIBLE PIEZO ALARM PIN TYPE; 25V 09939
PKM22EPP-4002 S
E2-7
9170-1431
6
CORE -SHIELDING BEAD
06352
HF50ACB-453215
E8
9170-1506
1
CORE-SHIELDING BEAD
06352
HF50ACB201209
F1-2
0699-2715
2
RESISTOR-FUSE 1 OHM +-5%; 0.5 W @70
01542
0699-2715
P1
1252-2161
1
CONN-RECT MICRORBN 24-CKT 24-CONT
01542
1252-2161
P2
1252-2266
1
CONN-RECT D-SUBMIN 9-CKT 9-CONT
01542
1252-2266
P3
1252-8092
1
CONN-POST TYPE 3.96-PIN-SPCG-MTG-END
01542
1252-8092
P4
1251-5066
1
CONN-POST TYPE 2.5-PIN-SPCG-MTG-END
01542
1251-5066
P5
1251-8363
1
CONN-POST TYPE .156-PIN-SPCG-MTG-END
01542
1251-8363
P6
1252-7162
1
CONN-POST TYPE 2.0-PIN-SPCG-MTG-END
01542
1252-7162
P7-10
1252-2771
4
CONNECTOR-SGL QDISC-M .25-IN-BSC-SZ
01542
1252-2771
P11
1252-8093
1
CONN-POST TYPE 3.96-PIN-SPCG-MTG-END
01542
1252-8093
Q1
1853-0525
1
TRANSISTOR PNP SI TO-236AA PD=200MW
02910
PMBT2907A
Q2
1854-1053
6
TRANSISTOR NPN SI SOT-23 (TO-236AB)
03406
MMBT2222A
Q3-4
1855-1660
2
TRANSISTOR MOSFET N-CHAN E-MODE
TO-247AC
03038
IRFP044N
Q5
1854-1053
TRANSISTOR NPN SI SOT-23 (TO-236AB)
03406
MMBT2222A
Q6
1853-0281
TRANSISTOR PNP 2N2907A SI TO-18 PD=400MW
02037
2N2907A
1
SUR107CT
105
6
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designator
Agilent Part
Number
Q7-10
1854-1053
TRANSISTOR NPN SI SOT-23 (TO-236AB)
03406
MMBT2222A
Q11
1855-0493
1
TRANSISTOR MOSFET P-CHAN E-MODE TO-220
03038
IRF9530N
R1
0699-1380
2
RESISTOR 3.16K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3161
R2-5
0699-1318
15
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R6
0699-1330
5
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1003
R7
0699-1374
1
RESISTOR 1.78K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1781
R8
1699-1425
3
RESISTOR 261 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2610
R9
0699-1391
9
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R10
1699-1415
9
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R11
0811-3839
2
RESISTOR .2 +-1% 5W PWN
01542
0811-3839
R12
0699-2715
1
RESISTOR-FUSE 1 OHM +-5%; 0.5 W @70
01542
0699-1394
R13
0699-1394
6
RESISTOR 14.7K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1472
R14
0699-1403
3
RESISTOR 31.6K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3162
R15
0764-0033
1
RESISTOR 33 +-5% 2W MO TC=0+-200
01542
0764-0033
R16
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R17
0811-3839
RESISTOR .2 +-1% 5W PWN
01542
0811-3839
R18
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R19
0699-1405
1
RESISTOR 38.3K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3832
R20
0699-1423
14
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R21
0699-1386
1
RESISTOR 5.62K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-5621
R22
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R23
0699-1381
RESISTOR 3.48K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3481
R24-26
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R27
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R28
0699-1425
RESISTOR 261 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2610
R29-30
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R31
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R32
0699-1425
RESISTOR 261 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2610
R33
0699-1381
RESISTOR 3.48K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3481
R34
0811-2188
RESISTOR 5K +-5% 3W PWI TC=0+-20
01542
0811-2188
R35
0699-1330
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1003
R36
0757-0274
RESISTOR 1.21K +-1% .125W TF TC=0+-100
00746
CRB25-FX-1211
R37
0699-1330
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1003
R38
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R39
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R40
0699-3431
RESISTOR 4.99K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-4991
R41
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R42
0699-3431
RESISTOR 4.99K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-4991
106
Qty
2
2
1
2
Part Description
Mfr.
Code
Mfr. Part Number
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designation
Agilent Part
Number
Qty
Part Description
Mfr.
Code
Mfr. Part Number
R43-44
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R45
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R46-47
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R48
0699-1348
1
RESISTOR 14.7 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-14R7
R49
0699-1344
1
RESISTOR 10 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-10R0
R50-51
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R52
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R53
0699-1380
RESISTOR 3.16K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3161
R54-59
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R60
0699-1415
R61
0699-1389
R62
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R63-65
0699-2489
12
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
R66
0699-1385
2
RESISTOR 5.11K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-5111
R67
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R68
0764-0013
1
RESISTOR 56 +-5% 2W MO TC=0+-200
02499
GS-356R0
R69
0699-2491
4
RESISTOR 20K +-0.1% .125W TF TC=0+-25
02499
W1206R032002BT
R70
0699-2837
8
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
R71
0699-2843
1
RESISTOR 100K +-0.1% .125W TF TC=0+-25
09891
RN73E2BTE 1003B
R72
0699-1406
1
RESISTOR 42.2K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-4222
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
2
RESISTOR 21.5K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2152
3
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
RESISTOR 8.25K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-8251
R73-79
0699-2489
R80
0699-1398
R81
0699-2489
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
R82
0699-1403
RESISTOR 31.6K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3162
R83
0699-1415
RESISTOR 100 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1000
R84
0699-1394
RESISTOR 14.7K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1472
R85
0699-1384
RESISTOR 4.64K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-4641
R86
0699-1398
RESISTOR 21.5K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2152
R87
0699-3602
RESISTOR 12.4K +-0.1% .125W TF TC=0+-25
06337
9C12063A1242BE
1
R88
0699-1389
RESISTOR 8.25K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-8251
R89
0699-2837
1
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
R90
0699-1423
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2150
R91
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
R92
0811-2188
R93-95
0699-2489
R96
R97
R98
0699-2506
RESISTOR 5K +-5% 3W PWI TC=0+-20
02499
T2B-9-5K5%
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
0699-2837
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
0699-1330
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1003
RESISTOR 7.15K +-1% .125W TKF TC=0+-100
00746
MCR 18-F-X-7151
6
1
107
6
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designation
Agilent Part
Number
R99
R100
R101
0699-1449
R102
0699-1318
R103
0699-2837
R104
0699-4527
R105
Qty
Part Description
Mfr.
Code
Mfr. Part Number
0699-2837
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
0699-2489
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
RESISTOR 348K +-0.1% .125W TKF TC=0+-100
00746
MCR18-F-X-3483
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
RESISTOR 16.9K +-0.1% .125W TF TC=0+-25
02499
W1206-R-03-1692-B
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R106
0699-2837
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
R107
0699-2489
RESISTOR 10K +-0.1% .125W TF TC=0+-25
02499
232274121003
R108
0699-2837
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
R109-110
0699-3577
RESISTOR 140K +-0.1% .125W TF TC=0+-25
02499
W1206-R-03-1403B
R111
0699-2837
RESISTOR 30K +-0.1% .125W TF TC=0+-25
02499
W1206R033002BT
R112
0698-3627
1
RESISTOR 200 +-5% 2W MO TC=0+-200
02499
GS-32000
2
1
2
R113
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
R114
0699-2484
1
RESISTOR 50K +-0.1% .125W TKF TC=0+-25
09891
RN73E2BTE 5002B
R115
0699-3590
1
RESISTOR 22.1K +-0.1% .125W TF TC=0+-25
09891
RN73E2B2212B
R116
0699-1389
RESISTOR 8.25K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-8251
R117
0699-1412
RESISTOR 75K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-7502
R118
0699-1394
RESISTOR 14.7K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1472
R119
0699-1400
R120-121
0699-1394
R122
0699-2491
R123
0699-1403
R124
0699-2491
R125
0699-1318
R126
0699-1408
R127
0699-2491
1
1
1
1
RESISTOR 26.1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2612
RESISTOR 14.7K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1472
RESISTOR 20K +-0.1% .125W TF TC=0+-25
09891
RN73E2BTE 200B
RESISTOR 31.6K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3162
RESISTOR 20K +-0.1% .125W TF TC=0+-25
02499
W1206R032002BT
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1001
RESISTOR 51.1K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-5112
RESISTOR 20K +-0.1% .125W TF TC=0+-25
02499
W1206R032002BT
R128
0699-2721
1
RESISTOR 3.16K +-0.1% .125W TF TC=0+-25
02499
W1206R033161BT
R129
0699-1514
2
RESISTOR .1 +-1% 5W MFS TC=0+-50
02499
LO-5-.1-1-RP
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1002
RESISTOR 33K +-5% .125W TKF TC=0+-200
00746
MCR18-J-W-333
R130-132
0699-1391
R133
0699-2145
1
R134
0699-2127
1
R135
0699-2489
RESISTOR 36.5K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-3652
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
R136
0699-1330
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1003
R137
0699-2489
RESISTOR 10K +-0.1% .125W TF TC=0+-25
06337
232274121003
R138
0699-1385
RESISTOR 5.11K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-5111
R139
0699-1394
RESISTOR 14.7K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1472
R140
0699-1514
RESISTOR .1 +-1% 5W MFS TC=0+-50
02499
LO-5-.1-1-RP
108
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Agilent Part
Designation Number
Qty
Part Description
Mfr.
Code
Mfr. Part Number
R141-142
0699-1375
2
RESISTOR 1.96K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-1961
R143-144
0699-1447
2
RESISTOR 261K +-1% .125W TKF TC=0+-100
00746
MCR18-F-X-2613
R145
0699-1449
RESISTOR 348K +-0.1% .125W TKF TC=0+-100
00746
MCR18-F-X-3483
RV1-6
0837-0261
6
DIODE-VRTS
03799
V275LA20A
S1
3101-3230
1
SWITCH-PB DPSTALTNG 6A 250V VAC/VDC
04486
NE18-CTII-2A-EE-X
U1
1820-6176
1
IC-INTERFACE XCVR BIPOLAR BUS OCTL
01698
SN75ALS160DW
U2
1820-6175
1
IC-INTERFACE XCVR BIPOLAR BUS OCTL
01698
SN75ALS162DW
U3
1821-1721
1
IC-GPIB CONTROLLER
01698
MP9914FNL
U4
34401-88842
1
IC(34401-88805)8BIT MCU 87C51
01542
34401-88842
U5
1820-6470
1
IC SCHMITT-TRIG CMOS/HCT INV HEX
02037
74HCT14AD
U6-7
1990-1552
2
OPTO-ISOLATOR LED-IC GATE IF=10MA-MAX
01542
HCPL-2211-300
U8
1820-5478
1
IC FF CMOS/HCT D-TYPE POS-EDGE-TRIG
01542
1820-5478
U9
1820-7662
1
IC-INTERFACE DRVR/RCVR BIPOLAR DUAL
01542
1820-5478
U10
1826-0144
1
IC PWR MGT-V-REG-FXD-POS 4.8/5.2V TO-220 01542
1826-0144
U11
1826-3755
1
IC PWR MGT-V-REG-FXD-POS 4.75/5.25V 5
01542
1826-2461
U12
1826-0393
1
IC PWR MGT-V-REG-ADJ-POS 1.2/37V 3 PINS
01542
1826-0393
U13
E3632-60016
1
IC 2M-BIT OTP 150-NS CMOS
01542
1818-5187
U14
1818-4777
1
IC 256K-BIT SRAM 70-NS CMOS
01542
1818-4777
U15
1818-5236
1
IC 4K-BIT EEPROM 500-NS CMOS
01542
1818-5236
U16
1826-0527
1
IC PWR MGT-V-REG-ADJ-NEG 1.2/37V 3 PINS
01542
1826-0527
U17
1821-1479
1
IC 16-BIT MCU I/O TIMER
01542
1821-1479
U18
1820-8907
1
IC-ASIC GT-ARY 600 GATES CMOS SCX6200
01542
1820-8907
U19
1820-5937
1
IC FF CMOS/AC D-TYPE POS-EDGE-TRIG
01542
1820-5937
U20
1990-1659
5
OPTO-ISOLATOR LED-PTRIAC IF=50MA-MAX
01542
1990-1659
U21
1826-2793
1
D/A 16-BIT 16-P-SOIC BICMOS
01542
1826-2793
U22
1820-5790
1
IC SHF-RGTR CMOS/HC SYNCHRO SERIAL-IN
01542
1820-5790
U23-24
1990-1659
OPTO-ISOLATOR LED-PTRIAC IF=50MA-MAX
01542
1990-1659
U25
1821-0434
2
IC ANLG-MUXR/DEMUXR CMOS/HC 8-CHANNEL 01542
1821-0434
U26
1826-1991
1
IC OP AMP HS SINGLE 8 PIN PLSTC-SOIC
01542
1826-1991
U27
1821-0434
IC ANLG-MUXR/DEMUXR CMOS/HC 8-CHANNEL 01542
1821-0434
U28
1990-1659
OPTO-ISOLATOR LED-PTRIAC IF=50MA-MAX
01542
1990-1659
U29
1826-1925
2
IC OP AMP LOW-NOISE SINGLE 8 PIN
01542
1826-1925
U30
1826-1811
1
IC OP AMP LOW-BIAS-H-IMPD DUAL 8 PIN
01542
1826-1811
U31
1826-1622
3
IC OP AMP LOW-BIAS-H-IMPD QUAD 14 PIN
01542
1826-1622
U32
1826-2420
3
IC OP AMP LP DUAL 8 PIN PLATC-SOIC
01542
1826-2420
U33
1820-4346
1
IC MUXR/DATA-SEL CMOS/HC
01542
1820-4346
U34-35
1826-2801
2
IC PWR MGT-OV-V-SEN 8 PINS P-SOIC PKG
01542
1826-2801
U36
1990-1659
OPTO-ISOLATOR LED-PTRIAC IF=50MA-MAX
01542
1990-1659
6
109
Chapter 6 Replaceable Parts
E3632-60002 Main PC Assembly
Reference
Designation
Agilent Part
Number
Qty
Part Description
Mfr.
Code
Mfr. Part Number
U37
1826-1925
2
IC OP AMP LOW-NOISE SINGLE 8 PIN
01542
1826-1925
U38
1826-1622
IC OP AMP LOW-BIAS-H-IMPD QUAD 14 PIN
01542
1826-1622
U39
1826-1838
IC PWR MGT-V-REF-FXD 4.95/5.05V 8 PINS
01542
1826-1838
U40
1826-2420
IC OP AMP LP DUAL 8 PIN PLATC-SOIC
01542
1826-2420
U41
1826-1622
IC OP AMP LOW-BIAS-H-IMPD QUAD 14 PIN
01542
1826-1622
U42
1826-2420
U43
1826-1635
VR1
1902-1542
Y1
0410-4009
Y2
1813-0827
1
110
1
IC OP AMP LP DUAL 8 PIN PLATC-SOIC
01542
1826-2420
IC OP AMP LOW-OFS SINGLE 8 PIN
01542
1826-1635
1
DIODE-ZNR 6.2V 5% TO-236 (SOT-23)
01542
1902-1542
1
RESONATOR-CERAMIC 12.0MHZ; STABILITY=.1
01542
0410-4009
CLK-OSC-XTAL STD 12.000-MHZ 0.01%
01542
1813-0827
1
Chapter 6 Replaceable Parts
E3632-60004 Front Panel Display PC Assembly
E3632-60004 Front Panel Display PC Assembly
Reference
Designator
Agilent Part
Number
Qty
Description
Mfr
Code
Mfr Part Number
C1-C3
0160-6497
14
CAP-FXD 0.1uF+-10%50V CER COG
01542
0160-6497
C4-C5
0180-3751
2
CAP-FXD 1uF+-20%35V TA
01542
0180-3751
C6
0160-5945
3
CAP-FXD 0.01uF+-10%50V CERX7R
01542
0160-5945
C7-C8
0160-6497
CAP-FXD 0.1uF+-10%50V CER COG
01542
0160-6497
C9
0160-5945
CAP-FXD 0.01uF+-10%50V CERX7R
01542
0160-5945
C10-C15
0160-6497
C16-C17
0160-5947
CAP-FXD 0.1uF+-10%50V CER COG
01542
0160-6497
CAP-FXD 1000pF+-10% 50V CER COG
01542
0160-5947
C18
C19-C20
0160-5945
CAP-FXD 0.01uF+-10%50V CERX7R
01542
0160-5945
0160-6497
CAP-FXD 0.1uF+-10%50V CER COG
01542
0160-6497
C25
0160-6497
CAP-FXD 0.1uF+-10%50V CER COG
01542
0160-6497
CR1
1906-0291
1
DIODE-DUAL 70V 100mA TO-236 AA
01542
1906-0291
CR2
1902-1542
1
DIODE-ZNR 6.2V 5% TO-236(SOT-23)
01542
BZX84C6V2
Q1-Q2
1854-1053
2
TRANSISTOR NPN SI SOT-23(TO-236AB)
01542
1854-1053
R1-R4
0699-1348
4
RESISTOR 14.7 +-1% .125W TKF TC=0+-100
00746
MCR18FX
R5
0699-1391
8
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R6
0699-1400
2
RESISTOR 26.1K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R7-R9
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R10
0699-1318
RESISTOR 1K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R11
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
00746
R12
0699-1378
RESISTOR 2.61K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R13-R15
0699-1391
RESISTOR 10K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R16-R19
0699-1423
4
RESISTOR 215 +-1% .125W TKF TC=0+-100
00746
MCR18FX
R20-R21
0699-1330
2
RESISTOR 100K +-1% .125W TKF TC=0+-100
00746
MCR18FX
R22
0699-1400
RESISTOR 26.1K +-1% .125W TKF TC=0+-100
00746
MCR18FX
U1
1820-5330
IC-INTERFACE DRVR BIPOLAR DISPLAY
01542
1820-5330
1826-1402
2
1
1
1
U2
1826-1402
1
IC PWR MGT-V-REG-FXD-POS 4.8/5.2V 8PINS
01542
U3
1826-2264
1
IC PWR MGT-UND-V-SEN 8 PINS P-SOIC PKG
01542
1826-2264
U4
1820-5562
1
IC GATE CMOS/HC NOR QUAD 2-INP
01542
1820-5562
U5
1820-5478
1
IC FF CMOS/HCT D-TYPE POS-EDGE-TRIG
01542
1820-5478
U6
1820-6756
1
IC SHF-RGTR COMS/HC MULTI-MODE
01542
1820-6756
U7
34401-88804
1
IC-8-BIT MCU W/4K EPROM;12MHZ
01542
34401-88804
U8
1826-1528
1
IC COMPARATOR LP QUAD 14PIN PLSTC-SOIC
01542
1826-1528
U9
E3632-60010
1
VFD E3632A
01542
E3632-60010
Y1
0410-4009
1
RESONATOR-CERAMIC 12mhz SATABILITY=.1
01542
0410-4009
J1
1252-7161
1
CONNECTOR-TIN-PLATED 12P(RIGHT-ANGLE)
01542
1252-7161
6
111
Chapter 6 Replaceable Parts
E3632-60005 Front Frame Assembly
E3632-60005 Front Frame Assembly
Reference
Designator
Agilent Part
Number
Qty
Description
Mfr
Code
Mfr Part Number
E3632-40001
1
WINDOW PLATE
01542
E3632-40001
E3632-40002
1
KEYPAD
01542
E3632-40002
E3632-40003
1
KNOB
01542
E3632-40003
E3632-40004
1
FRONT FRAME
01542
E3632-40004
E3632-60011
1
BINDING POST BLOCK
01542
E3632-60011
Description
Mfr
Code
Mfr Part Number
E3632A Power SupplyAssembly
Reference
Designator
Agilent Part
Number
Qty
E3632-60006
1
TRANSFORMER BRACKEY ASSEMBLY
01542
E3632-60006
E3632-60009
1
DC FAN ASSEMBLY
01542
E3362-60009
E3632-60013
E3632-60013
1
AC INLET ASSEMBLY
01542
2110-0996
1
FUSE 4A 250V FOR 100 AND 115 Vac
01542
2110-0996
2110-0999
1
FUSE 2.5A 250V FOR 230Vac
01542
2110-0999
112
Chapter 6 Replaceable Parts
Manufacturer’s List
Manufacturer’s List
Mfr Code
Manufacturer’s Name
00746
ROHM Corp
Manufacturer’s Address
Kyoto, Japan
01542
Agilent Div. 01 San Jose Components
San Jose, CA, U.S.A.
01698
Texas Instrument Inc
Dallas, TX, U.S.A.
02010
AVX Corp
Myrtle Beach, SC, U.S.A.
02037
Motorola Inc
Schaumberg, IL, U.S.A.
02499
International Resistive Co.
Boone, NC, U.S.A.
02910
Philips Semiconductors
Eindhoven, NL
03038
INTL Rectifier Corp
Los Angeles, CA, U.S.A.
03334
NV Philips Elcoma
Eindhoven, NL
03406
National Semiconductors
Santa Clara, CA, U.S.A.
04486
ITT Corp
New York, NY, U.S.A.
04504
General Instrument Corp
Clifton, NJ, U.S.A.
06127
WIMA
Mannheim, DE
06337
Philips Electronics N V
Eindhoven, NL
06352
TDK Corporation of America
Skokie, IL, U.S.A.
06360
Nippon Chemi-Con Corp
Ohme-Shi, Japan
09891
KOA Corporation
Ina-shi, Nagano, Japan
09939
Murata Electronics North America
Long Beach, CA, U.S.A.
10200
Electronic Concepts Inc
11892
EVOX/RIFA Inc
Lincolnshire, IL, U.S.A.
12340
KEMET Electronics Corporation
Greenville, SC, U.S.A.
6
113
114
7
Backdating
Backdating
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Schematics
Schematics
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118
Copyright© 1997 - 2000
Agilent Technologies
All Rights Reserved.
Printing History
Edition 2, April 2000
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Update packages, which are
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The foregoing warranty
shall not apply to defects
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The design and implementation of any circuit on this
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Buyer’s circuitry or malfunctions of Agilent products
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Manual Part Number: E3632-90010
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Safety Information
Do not install substitute
parts or perform any
unauthorized modification
to the product. Return the
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and repair to ensure that
safety features are maintained.
Safety Symbols
Warning
Calls attention to a procedure, practice, or condition,
that could possibly cause
bodily injury or death.
Caution
Calls attention to a procedure, practice, or condition
that could possibly cause
damage to equipment or permanent loss of data.
Earth ground symbol.
Chassis ground symbol.
!
Refer to the manual for
specific Warning or Caution
information to avoid personal injury or equipment
damage.
Hazardous voltages may be
present.
Warning
No operator serviceable
parts inside. Refer servicing
to service-trained personnel.
Warning
For continued protection
against fire, replace the line
fuse only with a fuse of the
specified type and rating.
Printed: April 2000 Edition 2
Printed in Korea