Option Verification 5-16 DVB-T/H Signal Analyzer Verification, Options 64 and 57
MT8212E and MT8213E MM PN: 10580-00255 Rev. J 5-85
60. Calculate the AT(set) values for Test Levels –55 dBm through –84 dBm and record the values in the
AT(set) column of Table A-75 on page A-47.
61. Remove Sensor A from the Power Splitter, and then connect the Power Splitter to the Cell Master RF In
port with the N(m)-to-N(m) adapter, as shown in Figure 5-16 on page 5-83.
62. Record the new Power Meter Sensor B reading in the “SB(–50)” box in Table A-75.
63. Repeat Step 42 through Step 50 for Test Levels –50 dBm to –84 dBm. Change the Reference Level and
switch the Pre Amp On or Off per the “Ref Level Pre Amp Off/On” column in Table A-75. Use the
following formula to calculate Deviation:
Deviation = M(Level) – SB(–50) – ΔAB(–50) – AT(–50) + AT(set)
64. Repeat Step 16 through Step 63 for frequencies 666MHz (Ch45) and 858 MHz (Ch 69). Set the calibration
factor of both power sensors to 666 MHz or 858 MHz, as required.
For 666 MHz - Channel 45, use Table A-76, “Option 64, DVB-T/H Signal Analyzer, Level Accuracy
Measurement, Channel = 45 at 666 MHz” on page A-48.
For 858 MHz - Channel 69, use Table A-77, “Option 64, DVB-T/H Signal Analyzer, Level Accuracy
Measurement, Channel = 69 at 858 MHz” on page A-49.
Displayed Average Noise Level (DANL) Verification
The tests in this section verify the DANL of the Cell Master in DVB-T/H Signal Analyzer mode.
Equipment Required:
• 50 ohm termination, Anritsu Model 28N50-2
• Cell Master MT821xE
Procedure:
1. Set the mode of the Cell Master to DVB-T/H Analyzer and preset the instrument.
2. Install a 50 ohm termination to the Cell Analyzer RF In connector.
3. Press the Frequency main menu key and choose a Signal Standard of Digital Terrestrial TV UHF (Europe).
Ensure that the Channel is set to 21 and that Pre Amp is Off.
4. Press the Shift and Sweep (3) hard keys. Change Meas Mode to Moving Average, and leave Average Count
set to 50.
5. Press the Amplitude main menu 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-78, “Option 64, DVB-T/H Signal Analyzer, DANL, Pre Amp Off”
on page A-50.
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-79,
“Option 64, DVB-T/H Signal Analyzer, DANL, Pre Amp On” on page A-50.
10. Change the channel to Channel 45. Set Pre Amp to Off and Reference Level to –25 dBm.
11. Repeat Step 5 through Step 9 for Channel 45.
12. Change the channel to Channel 69. Set Pre Amp to Off and Reference Level to –25 dBm.
13. Repeat Step 5 through Step 9 for Channel 69.
To Next Page
Loading...
Need help?
General
