Fluke PM6681 - Page 6

Internal
Control
Signals and Display
(Functional Level 5a)
5-11
Internal
Control
Signals and
Display
(Functional Level 5b)
5-12
Keyboard (Functional Level
6)
5-12
Measuring
Logic
(Functional Level
7)
5-13
Trigger Level DAC’s
(Functional
Level
8)
5-14
Input
Amplifier
(Functional Level
9)
5-16
GPIB
interface and
Analog output
(Functional Level
10)
5-18
Safety
Inspection
and Test After Repair
5-19
General Directives
.5-19
Safety Components
5-19
Check the Protective Ground
Connection
5-19
6
Calibration
Adjustments
Introduction.
6-2
Required Test
Equipment
6-2
Preparation
6-2
Power Supply
6-2
Crystal
Oscillators
6-3
16 MHz Oscillator
6-3
External Reference
Input
Multiplier
6-3
Standard
Osciilator
6-3
100
MHz
Frequency
Multiplier
6-3
Optional TCXO, PM
9678B
6-4
Optional Oven
Oscillators, PM 9690 and
PM
9691 . .
6-4
Interpolator
6-5
Input
Amplifier
6-6
Step
Response
6-6
Channel A
6-6
Channel B
6-6
IX
Attenuator
channel A
6-6
1 0X
Attenuator
channel
A
6-7
IX
Attenuator
channel B
6-7
1 0X
Attenuator
channel
B
6-7
Sensitivity
6-7
Trigger
Levels
6-7
Analog output
6-8
1.3
GHz HF-input,
PM 9621
6-9
2.7 GHz HF-input,
PM 9624
6-9
4.2
GHz
HF-input, PM
9625B
6-10
4.5 GHz
HF-input, PM 9625
6-10
7
Replacement
Parts
Introduction
7-2
Standard
Parts
7-2
Special
Parts
7-2
Mechanical Parts
7-3
Main
Board
7-5
Front board
7-16
PM
9621...........
7-17
PM 9678B
7-19
8
Schematic
Diagrams
How to Read the
Diagrams
8-2
Signals
8-2
Colored
Areas
8-2
Circuit
Symbols
8-2
Resistors, Capacitors,
Diodes,
Transistors and
Other
Components
8-2
Component Numbers
8-2
9
Appendix
How
to
Replace Surface
Mounted Devices
9-2
Electrostatic
discharge
9-3
Glossary
9-3
New Unit 1
9-4
Replacement Parts
9-4
Schematic
Diagrams
9-11
Model PM6681R
9-25
OCXO Range
Extended
9-27
Option
PM9671B.
9-29
Replacement Parts
9-29
Schematic
Diagrams
9-31
10
Index
VI