Keysight NFA Series Noise Figure Analyzers Service Guide 219
RF Section Troubleshooting (N8976B)
Troubleshooting
Connect A13J7 output to a functioning spectrum analyzer and verify the
322.5 MHz intermediate frequency is measuring
−
32
±
4 dB as shown in
.
Figure 5-8
322.5 MHz Intermediate Frequency
If this power level is correct the Front End assembly is operating correctly in
high band. If this power level is incorrect verify the following assemblies using
the 4.8 GHz internal calibrator signal.
1.
A11 Low Band Switch
2.
A10 Input Attenuator B
3.
A9 Input Attenuator A
4.
A16 Reference Assembly (4.8 GHz calibrator)
5.
A12 YTF Preselector
6.
A13 Front End Assembly
Содержание N8973B
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Страница 44: ...44 Keysight NFA Series Noise Figure Analyzers Service Guide Overview How to Return Your Instrument for Service ...
Страница 132: ...132 Keysight NFA Series Noise Figure Analyzers Service Guide Instrument Messages Condition Messages ...
Страница 228: ...228 Keysight NFA Series Noise Figure Analyzers Service Guide RF Section Troubleshooting N8976B Troubleshooting ...
Страница 268: ...268 Keysight NFA Series Noise Figure Analyzers Service Guide Analog Digital IF Troubleshooting 25 MHz BW IF Section ...
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Страница 332: ...332 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams NFA Computer Block Diagram ...
Страница 350: ...350 Keysight NFA Series Noise Figure Analyzers Service Guide Service and Diagnostics Menus Front Panel Key Test ...
Страница 470: ...470 Keysight NFA Series Noise Figure Analyzers Service Guide Assembly Replacement Procedures Front Frame Assembly ...