N9030B PXA Signal Analyzer Service Guide 599
Functional Tests
Scale Fidelity
Figure 18-7 Scale Fidelity Setup
Procedure
1. Configure the equipment as shown in Figure 18-7.
2. Preset the Source and press Mode, Spectrum Analyzer, Mode Preset on
the analyzer.
3. Set up the synthesized sweeper by pressing:
Frequency, 50, MHz
Amplitude, +5, dBm
RF On/Off, On
4. Set up the signal analyzer by pressing:
Input/Output, More, Freq Ref In, External
FREQ Channel, Center Freq, 50, MHz
SPAN X Scale, Span, 1, MHz
AMPTD Y Scale, Ref Level, 0, dBm
Meas Setup, Average/Hold Number, 10, Enter
Trace/Detector, Trace Average
Peak Search
5. Set the external 10 dB step attenuator to 0 dB.
6. Adjust the amplitude on the signal source until the marker amplitude on
the analyzer reads –15 dBm ± 0.2 dB.
7. On the analyzer, press the Single, Restart to trigger a 10 sweep average.
Averaging is used for all measurements to improve repeatability and
reduce measurement uncertainty.
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