Keysight N8973B User Manual

Keysight NFA Series Noise Figure Analyzers Service Guide 283
L.O. Synthesizer/Reference Troubleshooting
A16 Reference Assembly Troubleshooting
Table 8-3 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, Align Now
All on
EXA.
Figure
8-10
4.8 GHz
2nd LO Out
A16J702 4800 MHz +10 dBm ± 2 dB
Press
MODE/MEAS,
Spectrum Analyzer,
OK,
Freq, 1 GHz, Zero
Span
on EXA
Figure
8-11
4.8 MHz
1st LO Ref Out
A16J703 4800 MHz +4 dBm
Press
MODE/MEAS,
Spectrum Analyzer,
OK,
Freq, 50 MHz,
Zero Span, MEAS
SETUP
, Ad vanced,
Phase Noise
Optimization
, Best
Close in PNoise
on EXA
Figure
8-12
50 MHz Ref Out A16J701 50 MHz −25 dBm
Press
Input/Output, RF
Calibrator
, 50 MHz on
EXA
Figure
8-13
4.8 GHz Ref
Out
A16J701 4800 MHz −28 dBm
Press
Input/Output, RF
Calibrator
, 4.8 GHz on
EXA
Figure
8-14
2.4 GHz Ref
Out
A16J718 2400 MHz +10 dBm
Figure
8-15
300 MHz
LO AIF
A16J711 300 MHz +10 dBm
Figure
8-16
100 MHz Ref B
Out
A16J716 100 MHz +13 dBm
Figure
8-17
10 MHz Output A16J710 10 MHz +7 dBm
Figure
8-18

Keysight N8973B Specifications

General

Brand	Keysight
Model	N8973B
Category	Measuring Instruments
Language	English