Chapter 8 43
Scale Fidelity
Procedure
Procedure
1. Configure the equipment as shown in Figure 8-1
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.
8. On the analyzer, activate the Marker Delta function by pressing Peak
Search, Marker Delta.
9. Perform the following steps for each attenuator setting listed in the table
below:
a. Select the next External attenuator setting.
b. Press the Restart key to trigger a 10 sweep average.
c. Enter the delta marker value into Table 8-1.
d. Check delta marker reading against the test limits.
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