3-15 Mobile WiMAX Residual EVM and Frequency Error Tests (Option 67) Performance Verification 2
3-104 PN: 10580-00177 Rev. D MS2721B MM
20. Record the MS2721B Frequency Error reading in Table A-154.
21. Set the MG3700A Level to –15.0 dBm.
22. Press the Setup function hard key and set Demod to FCH.
23. Measure the EVM (rms) for –15 dBm and then record the measured results in Table A-152.
Residual EVM and Frequency Error (5 MHz Bandwidth and 5 ms Frame Length)
1. Set the MG3700A as follows:
a. Press the yellow Preset button (answer yes to the question).
b. Press the Set key
c. Press the (F1) soft key to select "Load File to Memory"
d. Press the (F1) soft key again to select "Select Package"
e. Using the Down Arrow key step through the selection list until "mWiMax" is highlighted.
f. Press the Set key.
g. Press the (F6) soft key "Return"
h. Press the Set key. The "Select Package" list box appears. Again select "mWiMax" and press Set.
i. Another file list appears. Select (highlight) "5m512g8_2_5_cap".
j. Press the Set key.
k. Press the MOD On/Off key and verify that the LED is ON (illuminated). Ensure that the "playing"
indicator is displaying the moving pattern.
l. Press the Frequency key, then enter 2600.5 MHz.
m. Press the Level key, then enter –15 dBm. Turn on the output.
2. Set the MS2721B as follows:
a. Press the Freq function hard key and set the Center Freq to 2600.5 MHz
b. Press the Setup function hard key and set the Bandwidth to 5 MHz.
c. Press the CP Ratio_G soft key (under the Setup menu) and set the CP Ratio to 1/8.
d. Press the Frame Length soft key and set the Frame Length to 5 ms.
e. Press the Demod soft key and set Demod to FCH.
f. Press the Measurements function hard key and press Demodulator, then press
Modulation Summary.
3. Record the MS2721B EVM (rms) reading in Table A-153, “Mobile WiMAX Residual EVM (5 MHz
Bandwidth and 5 ms Frame Length), Option 67” on page A-49.
4. Verify that the measured EVM is within specification.
5. Set the MG3700A Level to –50.0 dBm.
6. Record the MS2721B EVM (rms) reading in Table A-153.
7. Verify that the measured EVM is within specification.
8. On the MS2721B, press the Setup function hard key and set Demod to Auto.
9. Record the MS2721B Frequency Error reading in Table A-155, “Mobile WiMAX Frequency Error (5 MHz
Bandwidth and 5 ms Frame Length), Option 67” on page A-49.
10. Verify that the measured Frequency Error is within specification.
11. Set MG3700A Frequency to 3600.5 MHz.
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