Table of Conienis
Model 3455A
LIST
OF TABLES (Cont'd)
Table
Page
4-10. DC Accuracy Test
(1
V, 10 V Full Scale;
High Resolution On)
4-10
4-11.
DC
Accuracy Test (High Resolution
OfO.
-
^11
4-12.
DC Accuracy Test (High Resolution On).
.4-11
4-13.
AC Accuracy Test 30
Hz
to
100 kHz
(Standard Model 34SSA only)
4-14
4-14.
AC Accuracy Test
100
kHz to
1 MHz
(Standard Model 34SSA only) 4-IS
4-15.
AC Accuracy Test 30 Hz
to
100 kHz
(Model 345SA Option 001 only)
.4-15
4-16.
Two-Wire Ohm Accuracy Test
4-16
4-
17. Four-Wire Ohms Accuracy Test
4-17
5-
1. DC Zero Adjustment Padding List
(AlORllO)
5-2
5-2.
Jumper
Removal
(A15 Board)
5-4
5-3
. Jumper
Removal (A 1
3
Board)
5-4
6-1.
Standard Abbreviations
6-1
6-2.
Code List of Manufacturers
6-2
6-3.
Replaceable Parts
6-3
8-1.
AC
Convertor
Ranging
8-11
8-2. A/D Convertor Switch
Control Signal
Descriptions
8-21
8-3. Service
Group Listing
8-38
8-B-l. Auto-Cal
Constants
8-43
8-B-2. Auto-Cal
Switch
Closures
8-50
8-B-3. Gate Function in Auto-Cal
8-51
8-B-4.
Switch Driver Voltage Levels 8-51
8-B-5. Cal Constant Monitoring Points.
8-B-6. 3455A
DVM Switch
Closures
8-53
8-B-7. Possible
Auto-Cal
Failure Causes
8-54
8-D-l. Ohms Gain and Switch Configuration. . .
.8-66
8-E-l.
Mneumonic Definitions
8-71
8-G-l. Power Supplies Locations
8-76
LIST OF ILLUSTRATIONS
Figure Page
2-1.
Line
Voltage
Selection
2-1
2-2.
Power Cord Configuration
2-1
2-
3. Typical
HP-IB
System Interconnections. . ,
.2-2
3-
1. Front and Rear
Panel
Features
3-0
3-2.
Ohmmeter Measurement Connections
3-2
3-3.
Connecting
the
Guard
3-7
3-4.
Address Selection
3-8
3-
5. Operational Verification Flowchart.
.3-15/3-16
4-
1. Ambiguous Regions
4-3
4-2.
DC Accuracy Test
4-4
4-3.
AC/E>C Thermal Transfer Measurement
(Alternate Frequency Response Test).
. .
.4-6
4-4.
DC Accuracy
Test
4-11
4-5.
AC/DC Thermal Transfer
Measurement
(Alternate
Frequency Response Test). .
.4-13
4-6.
DC
Common-Mc^e Rejection Test
4-18
4-
7. AC Common-Mode Rejection Test
4-18
5-
1.
100 Volt
Zero Adjustment
5-1
5-2.
1 Volt Zero Adjustment
5-2
8-1.
Function Block Diagram
8-1
8-2.
Simplified Input
Switching
Diagram
8-2
8-3.
Operational Attenuator Diagram
8-3
8-4.
Basic
Voltmeter
Diagram
8-3
8-5. Simplified
Auto-Cal
Switching
Schematic.
.8-3
8-6.
10 V
dc Input
Offset Error measurement. .
.8-4
8-7.
1 V dc Input Offset Error Measurement. . .
.8-4
8-8.
.1
V
dc Input Offset Error Measurement. .
.8-5
8-9. 100 V
dc and
100 V
dc
Input Offset
Error
Measurement
8-6
8-10.
10
V
dc Gain Error Measurement
8-6
8-11.
.1 V dc and 1 V dc Gain Error
Measurement
8-7
8-12.
1
V
dc Reference Offset Error
Measurement
8-7
8-13.
100
V
dc
and 1000 V dc Gain Error
Measurement
8-8
8-14.
100 V
dc
Reference Offset Error
Measurement
8-8
8-15. Basic
Ohms
Measurement Diagram
8-9
8-16.
10
kO.
100 kft, 10
MO
Offset
Error
Measurement
8-9
8-17.
Ohms Reference Measurement
8-10 8-10
8-18.
Simplified A/D
Convertor Diagram
8-10
8-19.
Simplified
True
RMS
Convertor
8-11
8-20.
Simplified Average Responding AC
Convertor
8-12
8-21.
Ohms
Convertor
Current Source
8-13
8-22.
Ohms
Convertor Voltage Limit
8-14
8-23.
Equivalent DC Preamplifier Output
Circuit
8-15
8-24.
DC Preamp,
Simplifier Feedback
Circuitry
8-15
8-25. Simplified Voltage Reference Diagram. . .
.8-16
8-26.
Integrator Output Waveform
8-16
8-27.
Integrator Output
Waveforms
for
Different Input Voltage Levels
8-17
8-28.
Simplified A/D Input and Reference
Diagram
8-17
8-29.
Simplified A/D
Convertor Diagram
8-18
8-30.
Simplified Inguard Controller
Flowchart
8-19
8-31.
Controller
Data Transfer
Circuit
8-19
8-32.
Data
Transfer Signals
8-20
8-33.
Inguard Controller Reset Circuit
8-20
8-34.
Simplified A/D
Convertor
Control Circuit8-21
8-35.
Simplified Program ROM Circuit
8-22
8-36. Simplified Output Circuit
8-23
8-37.
Simplified Main
Controller Flowchart. . .
.8-24
8-38.
Main Controller
ROM Circuit
8-25
8-39.
Main
Controller RAM Circuit
8-26
8-40. Main Controller ALU Circuit
8-27
8-41.
Main Controller Interrupt Circuit
8-28
8-42.
Simplified
Turn-On Interrupt Circuit
8-29
vi
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