Anritsu Spectrum Master MS2722C - Residual EVM and Frequency Error (10 Mhz Bandwidth and 10 Ms Frame Length)

Chapter 3 — Options Verification 3-9 Option 66 and/or Option 67, Mobile WiMAX Signal Analyzer
MS272xC MM PN: 10580-00279 Rev. E 3-39
Residual EVM and Frequency Error (10 MHz Bandwidth and 10 ms Frame Length)
3. 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) submenu key to select “Load File to Memory”.
d. Press the (F1) submenu 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) submenu key, Return.
h. Press the Set key. The “Select Package” list box is displayed. Again select mWiMAX and press Set.
i. Another file list is displayed. Select (highlight) 10m1024g8_0_10_cap.
j. Press the Set key.
k. Press the MOD On/Off key and verify that the LED is On. 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 the output On.
4. Set the MS272xC to Mobile WiMAX Signal Analyzer mode and Preset the instrument.
5. Set the MS272xC as follows:
a. Press the Freq main menu key and set the Center Freq to 2600.5 MHz.
b. Press the Setup main menu key and set the Bandwidth to 10 MHz.
c. Press the CP Ratio submenu key (under the Setup main menu key) and set the CP Ratio to 1/8.
d. Press the Frame Length submenu key and set the Frame Length to 10 ms.
e. Press the Demod submenu key and set Demod to FCH.
f. Press the Measurements main menu key and press Demodulator, then press Modulation Summary.
6. Record the MS272xC EVM (rms) reading into the “EVM (rms)” column in Table A-122, “Option 67,
Mobile WiMAX Residual EVM (10 MHz Bandwidth and 10 ms Frame Length)” on page A-52.
7. Verify that the measured EVM is within specification.
8. Set the MG3700A Level to –50.0 dBm.
9. Record the MS272xC EVM (rms) reading into the “EVM (rms)” column in Table A-122.
10. Verify that the measured EVM is within specification.
11. On the MS272xC, press the Setup main menu key, and set Demod to Auto.
12. Record the MS272xC frequency error reading to the “Frequency Error” column in Table A-123,
“Option 67, Mobile WiMAX Frequency Error (10 MHz Bandwidth and 10 ms Frame Length)”
on page A-52.
13. Verify that the measured Frequency Error is within specification.
14. Set MG3700A Frequency to 3600.5 MHz.
15. On the MS272xC, change the Center Frequency to 3600.5 MHz.
16. Press the Setup main menu key and set Demod to FCH.
17. Measure the EVM(rms) for both –15 dBm and –50 dBm, and then record the measured results into
Table A-122.
18. Verify that the measured EVM is within specification.