Spectrum Analyzer Verification 2-5 Spectrum Analyzer Absolute Amplitude Accuracy Verification
S3xxE MM PN: 10580-00253 Rev. J 2-11
Test Setup Component Characterization
1. Connect both MA2442D power sensors to the power meter and calibrate the sensors.
2. Connect the equipment as shown in Figure 2-3.
3. Set the MG3692x frequency to 10.1 MHz.
4. Set the power meter to display both Channel A and B. Press the Sensor key, the Cal Factor soft key, and
then the Freq soft key. Use the keypad to enter the value matching the frequency of MG3692x as the
input signal frequency, which sets the power meter to the proper power sensor cal factor. Repeat for
Channel B. Press the System key to display the power reading.
5. Adjust the MG3692x output level so the Sensor A reading is –2 dBm ± 0.1 dB.
6. Record the Sensor B reading to the –2 dBm column of Table A-7, “Spectrum Analyzer Absolute
Amplitude Accuracy Across Frequency Setup Table”.
7. Adjust the MG3692x output level so the Sensor A reading is –30 dBm ± 0.1 dB.
8. Record the Sensor B reading to the –30 dBm column of Table A-7.
9. Adjust the MG3692x output level so the Sensor A reading is –50 dBm ± 0.1 dB.
10. Record the Sensor B reading to the –50 dBm column of Table A-7.
11. Repeat Step 3 through Step 10 for all the frequencies listed in Table A-7.
Figure 2-3. Fixed Level with Varying Frequency Setup
Note Before continuing, allow a 30 minute warm up for the internal circuitry to stabilize.
MG3692x Synthesized Signal Generator
10 MHz
Reference
ML2438A Power Meter
MA2442D
Sensor A
MA2442D
Sensor B
1870A
Power Splitter
10 dB Fixed
Attenuator
Adapter
A
B
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