276
Keysight NFA Series Noise Figure Analyzers Service Guide
L.O. Synthesizer/Reference Troubleshooting
A14 L.O. Synthesizer Troubleshooting
Verifying the 1st L.O. Output Power:
— Turn on the analyzer and wait for the instrument to complete the boot up
process.
— If the analyzer is an N8973B, press
FREQ, 600 MHz, Zero Span
.
If the analyzer is an N8974B, 75B, or 76B, press
FREQ, 4.2 GHz, Zero Span
.
— Refer to
, disconnect A14W4 cable at A14J740.
— Connect A14J740 1st LO output to the RF input of the functioning spectrum
analyzer using a cable that will function up to 10 GHz.
— Press
Frequency
,
4.5225 GHz
(if the analyzer is NOT an N8973B) or
Frequency 5.7225 GHz
(if the analyzer is an N8973B),
Span
,
5 MHz
,
Peak
Search
on the functioning spectrum analyzer. If the functioning spectrum
analyzer has a preselector peak or preselector centering function, perform
that operation to guarantee the preselector is optimized for the
measurement.
— The analyzer marker should read 4.5225 GHz or 5.7225 GHz at +16.55 dBm
±
3 dB as shown in
.
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 ...
Страница 322: ...322 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams Block Diagrams ...
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 ...