N9030B PXA Signal Analyzer Service Guide 269
LO Synthesizer/Reference Troubleshooting
A16 Reference Assembly Troubleshooting
Table 8-4 A16 Reference Assembly Signal Measurement Details
Signal
Description
Signal
Location
Expected
Frequency
(MHz)
Expected Power
Level
(dBm)
Special Instrument
Conditions
Figure
50 MHz
Ecal Out
A16J705 50 MHz −26 to −29 dBm
typical
While monitoring A16J705
output, place functioning
spectrum analyzer in Max
Hold. Press
System,
Alignments, Align
Now
, All on PXA.
Figure
8-15
4.8 GHz
2nd LO Out
A16J702 4800 MHz +11 dBm
Press
Freq, 1 GHz,
Span, Zero Span on
PXA
Figure
8-16
4.8 MHz
1st LO Ref Out
A16J703 4800 MHz +3 dBm
Press
Freq, 50 MHz,
Span, Zero Span,
Meas Setup, PhNoise
Opt
, Best Close in
PNoise
on PXA
Figure
8-17
50 MHz Ref Out A16J701 50 MHz −25 dBm
Press
Input/Output, RF
Calibrator
, 50 MHz on
PXA
Figure
8-18
4.8 GHz Ref
Out
A16J701 4800 MHz −28 dBm
Press
Input/Output, RF
Calibrator
, 4.8 GHz on
PXA
Figure
8-19
2.4 GHz Ref
Out
A16J718 2400 MHz +10 dBm
Figure
8-20
300 MHz
LO AIF
A16J711 300 MHz +10 dBm
Figure
8-21
100 MHz Ref
Output
A16J706 100 MHz +13 dBm
Figure
8-22
100 MHz Ref B
Out
A16J716 100 MHz +13 dBm
Figure
8-23
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