Performance Verification 2 3-13 DVB-T/H Signal Analyzer (Options 64 and 57) Verification
MS2721B MM PN: 10580-00177 Rev. D 3-91
Noise Floor Verification
The tests in this section verify the noise floor of the MS2721B in DVB-T/H 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 DVB-T/H Analyzer and preset the unit.
2. Install a 50 ohm termination to the Spectrum Analyzer RF In connector.
3. Ensure that the Channel is set to 21 and that Pre Amp is OFF.
4. Press the Meas Setup function hard key. Change Meas Mode to Average, and leave Average Count set
to 50.
5. Press the Frequency/Level function hard key and set the Reference Level to –25 dBm.
6. After Averages (50/50) appears at the top of the display, record the Channel Power into the “Pre Amp Off”
row of Table A-142, “DVB-T/H Signal Analyzer Noise Floor Pre Amp OFF, Option 64” on page A-46.
7. Set the Pre Amp to ON.
8. Set the Reference Level to –50 dBm.
9. After Averages (50/50) appears at the top of the display, record the Channel Power in Table A-143,
“DVB-T/H Signal Analyzer Noise Floor Pre Amp ON, Option 64” on page A-46.
10. Change the channel to Channel 45. Set Pre Amp to OFF.
11. Repeat Step 5 through Step 9 for Channel 45.
12. Change the channel to Channel 69. Set Pre Amp to OFF.
13. Repeat Step 5 through Step 9 for Channel 69.
Figure 3-25. DVB-T/H Noise Floor Verification Test Setup
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