194 Keysight N9010A EXA Service Guide
RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
The level should be −28 dBm ± 2 dB as shown in Figure 4-32.
Figure 4-32 4.8 GHz Calibrator Signal on Output of Attenuator B
If the analyzer is equipped with Option FSA, press Mech Atten and enter 6 dB.
The 4.8 GHz calibrator signal measured on the functioning Spectrum Analyzer
should measure 6 dB lower than the previous step (~−34 dBm).
Press Mech Atten and enter 10 dB. The 4.8 GHz calibrator signal measured on
the functioning Spectrum Analyzer should measure 10 dB lower than the first
step (~−38 dBm). Continue testing all the attenuation settings as described in
Table 4-18.
Table 4-18
Attenuator Setting Expected Level
dBm @ 4.8 GHz
Tolerance
16
a
a. Requires Option FSA
−44 ±3 dB
20 −48 ±3 dB
30 −58 ±3 dB
40 −68 ±4 dB
50 −78 ±4 dB
60 −88 ±4 dB
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