Channel Power Accuracy (10 Mhz Bandwidth And 10 Ms Frame Length) - Anritsu Spectrum Master MS2723B Maintenance Manual

2-11 Mobile WiMAX Signal Analyzer Verification

Channel Power Accuracy (10 MHz Bandwidth and 10 ms Frame Length)

Procedure:
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 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 2 dBm. Turn the output On.
2. Adjust the MG3700A Level setting with the knob so that the power meter reads –15.0 dBm ± 0.2 dB, and
record the actual value as shown on the power meter into
Accuracy Power Error (2600.5 MHz and –15.0 dBm)" on page
3. Set the MS272xB to Mobile WiMAX Signal Analyzer Mode and preset the instrument.
4. Set the MS272xB as follows:
a. Press the Freq soft key and set the Center Freq to 2600.5 MHz.
b. Press the Setup soft key and set the Bandwidth to 10 MHz.
c. Press the Frame Length soft key and set the Frame Length to 10 ms.
d. Press the Measurements soft key, press RF, and then press Power vs. Time.
5. Record the "MS272xB Reading", the displayed Channel Power (RSSI) value, into
6. Calculate the Channel Power Error by subtracting the "MS272xB reading" in Step
Meter Reading" in Step 2. Record the result into
7. Verify that the error is within specification.
8. Adjust the MG3700A Level setting to approximately –33 dBm so that the power meter reads
–50.0 dBm ± 0.2 dB, and record the actual value as shown on the power meter into
WiMAX Channel Power Accuracy Power Error (2600.5 MHz and –50.0 dBm)" on page
9. Record the "MS272xB Reading", the displayed Channel Power (RSSI) value, into
10. Calculate the Channel Power Error by subtracting the "MS272xB Reading" of Channel Power (RSSI) in
Step 9 from the "Power Meter Reading" in Step 8. Record the "Calculated Channel Power Error" into
Table A-98.
11. Verify that the error is within specification.
12. Set the calibration factor frequency of the power sensor to 3600.5 MHz.
13. Set MG3700A Frequency to 3600.5 MHz.
14. Change the Center Frequency of MS272xB to 3600.5 MHz.
2-72
Table A-97, "Mobile WiMAX Channel Power
Table A-97.
PN: 10580-00165 Rev. D
Performance Verification
A-36.
Table
5
Table A-98, "Mobile
Table
Models MS2723B and MS2724B MM
A-97.
from the "Power
A-36.
A-98.