Anritsu S412E Maintenance Manual page 35

Chapter 3 — Spectrum Analyzer Verification
4. Preset the S412E by pressing the Shift key, then the Preset (1) key, then the Preset button on the
touchscreen. Using the Sweep menu, change the Sweep Mode to Performance.
Note Before continuing, allow a 30-minute warm up for the internal circuitry to stabilize.
5. Touch the Freq main menu button and set the Center Freq to 50 MHz.
6. Touch the BW main menu button and set the RBW to 1 kHz.
7. Set the VBW to 10 Hz.
8. Set the Span to 10 kHz.
9. Touch the Amplitude main menu button and set the Reference Level to 10 dBm.
10. Set the Atten Lvl to 30 dB.
11. Adjust the power level on the MG3692x so that the power meter displays the corresponding desired
Sensor B reading as recorded for 0 dBm in the Required Sensor B Reading column in
"Spectrum Analyzer 50 MHz Amplitude Accuracy Setup Table" on page
12. Touch the Marker main menu button and then the Peak Search submenu button.
13. Record the Marker 1 amplitude reading in the 0 dBm row of
Amplitude Accuracy" on page
14. Repeat Step 11 through
pre-amp turned on, to ensure pre-amp functionality. Change Reference Level and Atten Lvl setting as
required. Refer to
15. Calculate deviation values of all input levels by subtracting the value in the Test Power column from
the value in Measured Value Reading column. Enter the results into the Deviation column in
Table A-12.
16. Verify that all deviation values are within the specification.
Amplitude Accuracy Across Frequency 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. 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.
3. Install the 34RKNF50 Adapter to the MG3692x Signal Generator output and then connect the
15NN50-1.5C Cable to the 34RKNF50 Adapter.
4. Connect the Power Splitter to the open end of the 15NN50-1.5C Cable.
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 frequency to 100 kHz
8. On the power meter, press the Sensor key, the Cal Factor soft key, and then the Freq soft key. Use the
numeric keypad to enter the value matching the frequency of MG3692X as the input signal frequency.
S412E MM
A-8.
Step 13 for the other power level settings. The last two settings are with the
Table A-11 for Required Sensor B Readings. Use
Figure 3-1 on page
PN: 10580-00324 Rev. N
A-7.
Table A-12, "Spectrum Analyzer 50 MHz
Table A-12
3-12.
3-8 Amplitude Accuracy
Table A-11,
to record test results.
3-15