9640A
Instruction Manual
vi
5 Calibration............................................................................................
Introduction........................................................................................................ 5-3
Recommended Tools and Equipment ................................................................ 5-3
Performance Test ............................................................................................... 5-5
Reference Frequency Accuracy..................................................................... 5-6
Frequency Accuracy...................................................................................... 5-7
Harmonics and Spurious Signal Content....................................................... 5-8
9640A Phase Noise Test (Optional) .............................................................. 5-12
9640A-LPN Phase Noise Test (Optional) ..................................................... 5-13
Modulation Test (Optional)........................................................................... 5-14
Level Accuracy - 50
Ω
.................................................................................. 5-18
Attenuation Accuracy - 50
Ω
(Optional)...................................................... 5-30
VSWR Test - 50
Ω
(Optional)....................................................................... 5-32
Level Accuracy - 75
Ω
.................................................................................. 5-35
Attenuation Accuracy - 75
Ω
(Optional)....................................................... 5-46
VSWR Test — 75
Ω
(Optional) .................................................................... 5-48
Calibration Adjustments .................................................................................... 5-51
Rear Panel Calibration Enable Switch........................................................... 5-52
Reference Frequency Adjustment ................................................................. 5-52
Base Adjustment............................................................................................ 5-53
Leveling Head Adjustment - 50
Ω
................................................................ 5-56
Leveling Head Adjustment - 75
Ω
................................................................ 5-58
Performance Test Record................................................................................... 5-62
Reference Frequency Accuracy..................................................................... 5-62
Frequency Accuracy...................................................................................... 5-62
Harmonics and Spurious Signal Content....................................................... 5-63
Model 9640A Phase Noise (Optional)........................................................... 5-65
Model 9640A-LPN Phase Noise (Optional).................................................. 5-65
Modulation (Optional)................................................................................... 5-66
Level Accuracy - 50
Ω
.................................................................................. 5-67
Attenuation Accuracy - 50
Ω
........................................................................ 5-72
VSWR - 50
Ω
(Optional)............................................................................... 5-74
Level Accuracy - 75
Ω
.................................................................................. 5-75
Attenuation Accuracy - 75
Ω
..................................................................... 5-80
VSWR - 75
Ω
(Optional)............................................................................... 5-81
6
Theory of Operation ............................................................................ 6-1
Introduction........................................................................................................ 6-3
Overall Functional Description.......................................................................... 6-3
User Interface ................................................................................................ 6-5
Frequency Synthesis...................................................................................... 6-5
Amplitude Control......................................................................................... 6-5
Frequency Modulation................................................................................... 6-6
Amplitude Modulation .................................................................................. 6-6
Instrument Control......................................................................................... 6-6
Power Supplies .............................................................................................. 6-7
7 Maintenance.........................................................................................
Introduction........................................................................................................ 7-3
Contacting Fluke................................................................................................ 7-3
General Maintenance ......................................................................................... 7-3
Replacing Fuses............................................................................................. 7-3
Cleaning the Air Filter................................................................................... 7-3
Содержание 9640A Series
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