HP 8340b - Section 7; Introduction

RF
Section
Assembly-Level
Service
CONTENTS
INTRODUCTION
..............................................................
H-1
Assemblies
..................................................................
H-1
THEORY
OF
OPERATION
.....................................................
H-2
Low
Band
..................................................................
H-2
High
Band
..................................................................
H-2
Leveling
....................................................................
H-2
Pulse
Modulation
.............................................................
H-3
Step
Recovery
Diode
(SRD)
....................................................
H-3
SYTM
Driver Compensation
....................................................
H-3
A8
3.7
GHz
Oscillator
.........................................................
H-3
A9
Low
Band
Pulse
Modulator
..................................................
H-4
A10
Directional
Coupler
.......................................................
H-4
AH
High
Band
Detector
.......................................................
H-4
A12
Low
Band
Splitter/Detector
.................................................
H-4
A13
SYTM
(switched
YIG-tuned
multiplier)
.........................................
H-4
A14
High
Band
Power
Amplifier
.................................................
H-5
A15
Low
Band
Low Pass
Filter
..................................................
H-5
A16
High
Band
Modulator/Splitter
.............................................
H-5
A17
Low
Band
Mixer
..........................................................
H-5
A18
Low
Band
Power
Ampifier
..................................................
H-6
A63
RF
Attenuator/J5
RF
Output
Connector
.......................................
H-6
J5/J20 RF
Output
Connector
...................................................
H-6
AT1
Peripheral
Mode Isolator
...................................................
H-6
AT3
Isolator
.................................................................
H-6
ALC
Loop
..................................................................
H-7
SYTM
Related
Assemblies
.....................................................
H-8
A28
SYTM
Driver
Assembly
....................................................
H-8
Pulse Modulation
Assembly
...................................................
H-11
RF
Section
Simplified
Block
Diagram
............................................
H-13
OVERALL
ASSEMBLY-LEVEL
TROUBLESHOOTING
............................
H-15
Troubleshooting
Sequence
.......................................
...........
H-15
RF
Section Overall
Block
Diagram
..............................................
H-17
SYTM
PEAKING
ASSEMBLY-LEVEL
TROUBLESHOOTING
.....................
H-19
The Fault
Annunciator
Comes
On
...............................................
H-19
HP
8340B/41B
Table
of
Contents
i