HP 3455A Operating And Service Manual page 7

Table of Contents
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Model 3455A
LIST OF TABLES (Cont'd)
Page
DC Accuracy Test (1 V, 10 V Full Scale;
High Resolution On)...........-..--. 4-10
DC Accuracy Test (High Resolution Off}. .4-11
DC Accuracy Test (High Resolution On). .4-11
AC Accuracy Test 30 Hz to 100 kHz
(Standard Model 3455A only)......... 4-14
AC Accuracy Test 100 kHz to 1 MHz
(Standard Model 3455A only)......... 4-15
AC Accuracy Test 30 Hz to 100 kHz
(Model 3455A Option 001 only) 4-15
Two-Wire Ohm Accuracy Test.......... 4-16
Four-Wire Ohms Accuracy Test......... 4-17
DC Zero Adjustment Padding List
(AIORIIO) .........00 000 c cece cece eee 5-2
Jumper Removal (A15 Board)............ 5-4
Jumper Removal (A13 Board)............ 5-4
61.
LIST OF ILLUSTRATIONS
Page
Line Voltage Selection.................. 2-1
Power Cord Configuration. ............. 2-1
Typical HP-IB System Interconnections. . 22-2
Front and Rear Panel Features........... 3-0
Ohmmeter Measurement Connections... .. 3-2
Connecting the Guard................... 3-7
Address Selection..........--...0e0e eee 3-8
Operational Verification Flowchart. .3-15/3-16
Ambiguous Regions..................2- 4-3
DC Accuracy Test......... 0.0.0... 00 22 4-4
AC/DC Thermal Transfer Measurement
(Alternate Frequency Response Test)... .4-6
DC Accuracy Test..... 0.00 0ce cece eens 411
AC/DC Thermal Transfer Measurement
(Alternate Frequency Response Test). . .4-13
DC Common-Mode Rejection Test....... 4-18
AC Common-Mode Rejection Test....... 4-18
'100 Volt Zero Adjustment............... 5-1
1 Volt Zero Adjustment................. 5-2
Function Block Diagram.............00 8-1
Simplified Input Switching Diagram....... 8-2
Operational Attenuator Diagram......... 8-3
Basic Voltmeter Diagram............000 8-3
Simplified Auto-Cal Switching Schematic. . 8-3
10 V de Input Offset Error measurement. . . 8-4
1 V de Input Offset Error Measurement... .8-4
I V de Input Offset Error Measurement. . .8-5
100 V de and 100 V de Input Offset
Error Measurement...... - a s Rid te RNC 8-6
10 V de Gain Error Measurement......... 8-6
.1 V de and 1 V de Gain Error
Measurement ................00 eee eee 8-7
1 V de Reference Offset Error
Measurement ..0.... 0.00 c cece eee ees 8-7
100 V de and 1000 V de Gain Error
Measurement .............eeeeevee eee 8-8
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8-15.
8-16.
8-17.
8-18.
8-19.
8-20.
8-21.
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8-24.
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8-34.
8-35.
8-36.
8-37.
8-38.
8-39.
8-40.
8-41.
8-42.
Standard Abbreviations................. 6-1
Code List of Manufacturers.............. 6-2
Replaceable Parts..............----.0-. 6-3
AC Convertor Ranging...............5. 8-11
A/D Convertor Switch Control Signal
Descriptions er scd:6.6.0.0 atid seid en ody eee 8-21
Service Group Listing.................. 8-38
Auto-Cal Constants...........ee serene 8-43
Auto-Cal Switch Closures.............. 8-50
Gate Function in Auto-Cal.............. 8-51
Switch Driver Voltage Levels............ 8-51
Cal Constant Monitoring Points.
3455A DVM Switch Closures............ 8-53
Possible Auto-Cal Failure Causes........ 8-54
. Ohms Gain and Switch Configuration. . . .8-66
Mneumonic Definitions................ 8-71
Power Supplies Locations.............. 8-76
100 V de Reference Offset Error
Measurement ..-..... 0. eee eee rere 8-8
Basic Ohms Measurement Diagram....... 8-9
10 kQ, 100 kQ, 10 MQ Offset Error
Measurement ...........0 0.00 ee eee eas 8-9
Ohms Reference Measurement 8-10...... 8-10
Simplified A/D Convertor Diagram...... 8-10
Simplified True RMS Convertor......... 8-11
Simplified Average Responding: AC
CONVETtOR. «55.252 be base eae det bies
Ohms Convertor Current Source. .
Ohms Convertor Voltage Limit..........
Equivalent DC Preamplifier Output
Cirtiits oc. San feeecan ete er ns 8-15
DC Preamp, Simplifier Feedback
CIRCUIELY 6550055 jl ad fe secge sete 8-15
Simplified Voltage Reference Diagram. .. 8-16
Integrator Output Waveform............ 8-16
Integrator Output Waveforms for
Different Input Voltage Levels........ 8-17
Simplified A/D Input and Reference
Diagraits iii) cceiicauiate saa aaa 8-17
Simplified A/D Convertor Diagram...... 8-18
Simplified Inguard Controller
Flowchart icici. fi5% 9 daid hae pwc enes
Controller Data Transfer Circuit
Data Transfer Signals..........
Inguard Controller Reset Circuit
Simplified A/D Convertor Control Circuit8-21
Simplified Program ROM Circuit........ 8-22
Simplified Output Circuit..............- 8-23
Simplified Main Controller Flowchart... .8-24
Main Controller ROM Circuit........... 8-25
Main Controller RAM Circuit........... 8-26
Main Controller ALU Circuit........... 8-27
Main Controller Interrupt Circuit........ 8-28
Simplified Turn-On Interrupt Circuit... .. 8-29