Performance Verification 2 3-4 ISDB-T Signal Analyzer (Option 30) Verification
MS2721B MM PN: 10580-00177 Rev. D 3-19
Noise Floor Verification
The tests in this section verify the noise floor of the MS2721B in ISDB-T Signal Analyzer mode.
Required Equipment:
• 50 ohm termination, Anritsu Model 28N50-2
• Spectrum Master Model MS2721B
Procedure:
1. Set the mode of the MS2721B to ISDB-T Signal Analyzer and preset the unit.
2. Install a 50 ohm termination to the Spectrum Analyzer RF In connector.
3. Press the Meas Selection function hard key, then press Field Strength.
4. Ensure that the Channel is set to 13 and Pre Amp is OFF.
5. Set the Reference Level to –25 dBm.
6. Press the Meas Setup function hard key. Change Meas Mode to Average, and leave Average Count set
to 50.
7. After Average (50/50) appears, record the Channel Power into the “Measured Value” column of
Table A-58, “ISDB-T Signal Analyzer Noise Floor with Pre Amp OFF, Option 30” on page A-21.
8. Set the Reference Level to –50 dBm and the Pre Amp to ON.
9. After Average (50/50) appears, record the Channel Power into the “Measured Value” column of
Table A-59, “ISDB-T Signal Analyzer Noise Floor with Pre Amp ON, Option 30” on page A-21.
10. Change the channel to 38. Set the Pre Amp to OFF.
11. Repeat Step 5 through Step 9 for Channel 38.
12. Change the channel to 62. Set the Pre Amp to OFF.
13. Repeat Step 5 through Step 9 for Channel 62
Figure 3-6. ISDB-T Option 30 – Noise Floor Verification Test Setup
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