Performance Verification 2 3-10 Fixed WiMAX Signal Analyzer (Options 46 and 47) Verification
MS2721B MM PN: 10580-00177 Rev. D 3-63
Fixed WiMAX Residual EVM and Frequency Error Tests (Option 47)
Procedure:
1. Connect the MA2482D Power Sensor to the power meter and zero the meter.
2. Set the calibration factor frequency of the power sensor to 2600.5 MHz.
3. Connect the Power Sensor, 1870A splitter, and 10 dB attenuators (quantity 2), as shown in Figure 3-17
on page 3-60.
4. 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 "WiMax" 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 "WiMax" and press Set.
i. Another file list appears. Select (highlight) "Mx10g32".
j. Press the Set key.
k. Press the MOD On/Off key and verify that the LED is 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 2 dBm. Turn on the output.
5. Adjust the MG3700A Level setting with the knob so that the power meter reads –15.0 dBm ± 0.2 dB.
6. Set the MS2721B to Fixed WiMax Signal Analyzer Mode and preset the instrument.
7. Set the MS2721B as follows:
a. Press the Freq function hard key, and set the Center Frequency to 2600.5 MHz
b. Press the Setup function hard key, and set the Bandwidth to 10 MHz.
c. Press the CP Ratio soft key (under the Setup menu), and set the CP Ratio to 1/32.
d. Press the Measurements function hard key, and press Demodulator, then press
Modulation Summary.
8. Record the MS2721B EVM (rms) reading to the "EVM (rms)" column in Table A-112, “Fixed WiMAX
Residual EVM, Option 47” on page A-36.
9. Verify that the measured EVM is within specification.
10. Adjust the MG3700A Level setting to approximately –33 dBm so that the power meter reads –50.0 dBm.
11. Record the MS2721B EVM (rms) reading to the "EVM (rms)" column in Table A-112.
12. Verify that the measured EVM is within specification.
13. Record the MS2721B Frequency Error reading in Table A-113, “Fixed WiMAX Frequency Error,
Option 47” on page A-36.
14. Verify that the measured Frequency Error is within specification.
15. Set the calibration factor frequency of the power sensor to 3600.5 MHz.
16. Set MG3700A Frequency to 3600.5 MHz.
17. Change the Center Frequency of the MS2721B to 3600.5 MHz.
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