Option Verification 5-6 ISDB-T SFN Verification, Option 32
MT8212E and MT8213E MM PN: 10580-00255 Rev. J 5-21
9. Using the Down Arrow key, step through the selection list until the “Digital_Broadcast” option is
highlighted.
10. Press the Set key.
11. Press the F6 (Return) soft key.
12. Press the Set key.
13. Using the Down Arrow key, step through the selection list until the “Digital_Broadcast” option is
highlighted.
14. Press the Set key.
15. Using the Down Arrow key, step through the selection list until the “ISDB-T_1layer_1ch” option is
highlighted.
16. Press the Set key.
17. Set the MG3700A frequency to 473.14285714 MHz.
18. Set the level to –25 dBm.
19. Confirm that the Modulation On/Off key and the Output key both have LEDs On.
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 dB. Record the attenuation
reading as AT(–10) in Table A-31, “ISDB-T SFN Level Accuracy Verification, AT(–10)” on page A-24.
22. On the MG3700A, adjust power level so that the Power Meter Sensor A reading is – 10.0 dBm ± 0.2 dB.
23. Record Power Meter Sensor A and Sensor B readings in Table A-31.
24. Subtract Sensor A reading from Sensor B reading and record the result in the ΔAB(– 10) column of
Table A-31.
25. Calculate the AT(set) values for Test Levels –10 dBm through –45 dBm and record the values in the
AT(set) column of Table A-32, “ISDB-T SFN Analyzer Level Accuracy Measurement Channel = 13ch at
473.14285714 MHz” on page A-25.
26. Remove Sensor A from the Power Splitter and then connect the Power Splitter to the MT821xE Spectrum
Analyzer RF In with an N male to N male adapter, as shown in Figure 5-5 on page 5-22.
27. Record the new Power Meter Sensor B reading into the SB(– 10) box in Table A-32.
28. On the MT821xE, set the mode to ISDB-T SFN Analyzer and preset the instrument.
29. Press the Meas Setup main menu key, and change the Meas Mode to Continuous.
30. Press the Frequency/Level main menu key, confirm that Channel is 13 and that Pre Amp is Off.
31. Change the Reference Level to –10 dBm.
32. After the Measuring percentage gets to 100%, record the Channel Power from the MT821xE into the
M(Level) column under Pre Amp Off in Table A-32.
33. Calculate the Deviation using the following formula:
Deviation = M(Level) – SB(–10) – ΔAB(–10) – AT(–10) + AT(set)
34. Record the result into the Dev column under Pre Amp Off in Table A-32 and verify that it is within
specification.
35. Set the MN63A attenuation to the next AT(set) value in Table A-32.
Note Since AT(–10) is the same as AT(set), [– AT(–10) + AT(set)] = 0
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