Contents
Model 436A
CONTENTS
(cont'd)
Section
Page
Section
Page
VIII SERVICE
..................................
8-1
8-1.
Introduction
...............................
8-1
8-3.
Safety
Considerations
......................
8-1
8-9.
Recommended Test
Equipment
.............
8-5
8-11.
Service
Aids
...............................
8-5
8-16.
Repair
.....................................
8-5
8-17.
Factory Selected Components
.............
8-5
8-19.
Disassembly
and
Reassembly
Procedures
..............................
8-5
8-24.
Basic Circuit Descriptions
..................
8-
7
8-25.
Linear
Integrated Circuits
................
8-
7
8-30.
8-55.
8-59.
8-64.
8-70.
8-71.
8-75.
8-87.
8-114.
8-117.
8-130.
Digital
Integrated
Circuits
and
Symbols
..
8-
7
Troubleshooting
.........................
8-16
Standard
Instrument
Checkout
..........
8-16
HP-IB
Instrument
Checkout
.............
8-69
Block Diagram Circuit Descriptions
.......
8-117
Service Sheet
1
.........................
8-117
Service Sheet
2
.........................
8-118
Service Sheet
3
.........................
8-122
Service Sheet 4
.........................
8-144
Command
Mode Operation
.............
8-144
Data
Mode
Operation
..................
8-147
ILLUSTRATIONS
Figure
Page
Figure
Page
1-1.
HP
Model 436A Power Meter
and
5-6.
Power Reference Oscillator Frequency
Accessories Supplied
.......................
1-0
Adjustment
Setup
..........................
5-8
5-7.
Power Reference Oscillator Level
2-1.
Line Voltage
and
Fuse Selection
.............
2-1
2-2.
Power Cable
and
Mains
Plug
Part
Adjustment
Setup
.........................
5-10
Numbers
...................................
2-2
6-1.
Cabinet
Parts
..............................
6-19
2-3.
Hewlett-Packard Interace Bus Connection
...
2-5
3-1.
Front
and
Rear
Panel
Controls,
Connectors
and
Indicators
.................
3-2
3-2.
Operator's Checks
...........................
3-6
3-3.
Operating Instructions
.....................
3-11
3-4.
Power Meter Response Curve (Settling
Time for Analog Circuits)
.................
3-20
3-5.
Measurement Timing Flow
Chart
(Settling
Time for Digital Circuitry)
.................
3-21
3-6.
Operating
Program Simplified
Flow
Chart
...............................
3-22
3-7.
Test ofHP-IB Operation Flowchart
.........
3-24
3-8.
436A Quick Programming Guide
............
3-25
3-9.
Calculating Measurement Uncertainties
....
3-32
3-10.
The Effect of Power Sensor
Mismatch
on Measurement Accuracy
................
3-34
3-11.
Calculating Measurement
Uncertainty
(Uncertainty
in
dB Known)
................
3-35
8-1.
Schematic
Diagram
Notes
...................
8-2
,.
8-2.
Front
Panel
Removal.
.......................
8-6
8-3.
Operational Amplifier
Functional
Circuits
...
8-8
8-4.
Dual D-Type Flip-Flop
.......................
8-9
8-5.
Four-Bit Bistable
Latch
.....................
8-9
8-6.
Dual
J-K
Master/Slave
Flip-Flop
and
Gate
Pulse Timing
.............................
8-10
8-7.
Dual
J-K
Edge-Triggered Flip-Flop
..........
8-10
8-8.
Programmable Counters
...................
8-11
8-9.
3-Line to 8-Line Decoder
....................
8-12
8-10.
8-lnput
Data
Selector (Multiplexer)
.........
8-13
8-11.
LED Display Driver
........................
8-14
8-12.
Numeric Display
.....................
,
.....
8-15
8-13.
MOS
and
TI'L
ROMs
......................
8-15
8-14.
Power Meter Operating
Cycle
...............
8-17
8-15.
Operating
Program
Flow
Chart
............
8-25
8-16.
HP-IB
Verification
Program
(HP 9830A
Calculator)
....................
8-70
4-1.
Zero
Carryover Test Setup
...................
4-2
4-2.
Instrument
Accuracy Test
Setup
.............
4-4
4-3.
Calibration Factor
Test
Setup
...............
4-6
4-4.
Power Reference Level Test Setup
............
4-8
8-17.
HP-IB
Verification
Program
(HP 9820A
Calculator)
....................
8-95
8-18.
Analog-to-Digital Converter Simplified
Diagram
and
Waveforms
.................
8-120
8-19.
HP-IB
Listen
Handshake
Timing
..........
8-145
5-1.
DC
Offset
Adjustment
Setup
.................
5-3
8-20.
Data
Valid
Status
Generator
Timing
......
8-154
5-2.
Auto Zero Offset
Adjustment
Setup
..........
5-4
8-21.
Overall
Block
Diagram
....................
8-159
5-3.
Spike
Balance Adjustment Setup
............
5-5
5-4.
Multivibrator Adjustment
Setup
.............
5-6
5-5.
A-D
Converter
and
Linear
Meter
8-22.
AC
Gain,
A-D
Converter
and
Display
Circuits Block
Diagram
..................
8-161
ri.
8-23.
Controller
and
Counters Block
Diagram
...
8-163
Adjustment
Setup
..........................
5-7
8-24.
HP-IB (Opt.
022)
Circuit Block
Diagram
...
8-165
lV
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