3-6 ISDB-T SFN Analyzer (Option 32) Verification Performance Verification 2
3-26 PN: 10580-00177 Rev. D MS2721B MM
Procedure:
1. Ensure that the Power Amplifier is OFF.
2. Connect the MG3700A Signal Generator, Power Amplifier with N(f) to BNC(m) adapters, RF Limiter,
MN63A Programmable Attenuator, Power Divider, Power Meter, and Power Sensors as shown in
Figure 3-9, “Level Accuracy and 1 dB Compression Level Pretest Setup – Two Sensors” on page 3-25.
3. On the MG3700A, press the yellow Preset key located on the upper left side of the instrument.
4. Press the Down Arrow key to select Yes.
5. Press the Set key. Note that the MG3700A has two Set keys, and they both do the same thing.
6. Press the F1 soft key to select Load File to Memory.
7. Press the F1 soft key again to select Select Package.
8. Use the Down Arrow key to step through the selection list until the Digital_Broadcast option is
highlighted.
9. Press the Set key.
10. Press the F6 soft key, labeled Return.
11. Press the Set key.
12. Use the Down Arrow key to step through the selection list until the Digital_Broadcast option is
highlighted.
13. Press the Set key.
14. Use the Down Arrow key to step through the selection list until the ISDB-T_1layer_1ch option is
highlighted.
15. Press the Set key.
16. Perform Zero/Cal on Sensor A and Sensor B of the power meter and set the calibration factor of both
sensors to 473 MHz.
17. Set the MG3700A frequency to 473.14285714 MHz.
18. Set the Level to –25 dBm.
19. Ensure that the Mod On/Off key and the Output key each have an illuminated LED.
20. Turn on the power amplifier and allow it to warm up for at least 5 minutes.
21. Adjust the MN63A Attenuator so that the Sensor A reading is –10 dBm ± 1 dBm, and record the reading
in the “AT(-10)” column in Table A-61, “Readings for Sensor A, Sensor B, DAB(–10), and MN63A
Attenuation AT(–10), Option 32” on page A-23.
22. On the MG3700A, adjust the power level so that the Power Meter Sensor A reading
is –10.0 dBm ± 0.2 dBm.
23. Record the following values to the appropriate columns in Table A-61:
Power Meter Sensor A reading to the “Sensor A Reading” column
Power Meter Sensor B reading to the “Sensor B Reading” column
24. Subtract the value of the Sensor A Reading from the value of the Sensor B Reading and record the result
in the “DAB(–10)” column of Table A-61. Example calculation:
DAB(–10) = Sensor B Reading – Sensor A Reading
25. Calculate the AT(set) values for Test Levels –10 dBm through –45 dBm and record the results in the
“AT(set)” column in Table A-64, “ISDB-T SFN Analyzer Level Accuracy Measurement Channel = 13ch at
473.14285714 MHz, Option 32” on page A-24.
26. Remove Sensor A from the Power Splitter and then connect the Power Splitter to the MS2721B Spectrum
Analyzer RF In port with an N(m)-to-N(m) Adapter as shown in Figure 3-10, “Level Accuracy
Verification Setup – Sensor B Only” on page 3-27.
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