Anritsu S412E Maintenance Manual page 33

Chapter 3 — Spectrum Analyzer Verification
50 MHz Amplitude Accuracy Verification
Test Setup Characterization
1. Turn on the 10 MHz Reference Standard, the ML2438A Power Meter, the MG3692x Signal Generator,
and the S412E.
Note Before continuing, allow a 30-minute warm up period for the internal circuitry to stabilize.
2. Install the 34RKNF50 Adapter to the MG3692x Signal Generator output, and then connect the
15NN50-1.5C Cable to the 34RKNF50 Adapter.
3. Connect the Power Splitter to the open end of the 15NN50-1.5C Cable.
4. On the power meter, press the Channel front panel key, the Setup soft key, and then the Channel soft key
to display Channel 2 Setup menu.
a. Press the Input key twice to set the Input Configuration to B.
b. Press the Sensor key to display both Sensor A and Sensor B readings.
c. Connect the power sensors to the Calibrator port of the power meter and calibrate the sensors.
d. Press the Sensor key, the Cal Factor soft key, and then the Freq soft key.
e. Use the numeric keypad to enter 50 MHz as the input signal frequency. Do this for both Sensor A
and Sensor B. This sets the power meter to use the proper power sensor cal factor.
5. Connect Sensor B to one of the Power Splitter outputs.
6. Install the 10 dB Fixed Attenuator to the other Power Splitter output and then connect Sensor A to the
end of the attenuator as shown in
7. Set the MG3692x to a frequency of 50 MHz.
8. Starting with 0 dBm, adjust the power level of the MG3692x to get a reading on Sensor A that matches
the power level into the Test Power Level @ 50 MHz column in
50 MHz Amplitude Accuracy Setup Table" on page
9. Record the Sensor B reading into the Required Sensor B Reading column in
10. Repeat Step 8 and
S412E MM
Figure
Step 9 for the other input levels from –4 dBm to –50 dBm.
PN: 10580-00324 Rev. N
3-1.
A-7.
3-8 Amplitude Accuracy
Table A-11, "Spectrum Analyzer
Table A-11.
3-13