Channel Power Accuracy (5 Mhz Bandwidth And 5 Ms Frame Length) - Anritsu Spectrum Master MS2721B Maintenance Manual

3-14 Mobile WiMAX Signal Analyzer (Options 66 and 67) Verification

Channel Power Accuracy (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 2 dBm. Turn on the output.
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 power meter reading in
Error (2600.5 MHz and –15.0 dBm) Option 66" on page
3. Set the MS2721B to Mobile WiMax Signal Analyzer Mode and preset the instrument.
4. 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 Frame Length soft key and set the Frame Length to 5 ms.
d. Press the Measurements function hard key and press RF, then press Power vs. Time.
5. Record the MS2721B "Channel Power (RSSI)" reading in
6. Calculate the Channel Power Error by subtracting the MS2721B "Channel Power (RSSI)" reading from
the power meter reading in
Channel Power Error = Power Meter Reading – RSSI
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 power meter reading in
Channel Power Accuracy Power Error (2600.5 MHz and –50.0 dBm) Option 66" on page
9. Record the MS2721B Channel Power (RSSI) reading in
10. Calculate the Channel Power Error by subtracting the MS2721B "Channel Power (RSSI)" reading from
the power meter reading in
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 MS2721B to 3600.5 MHz.
15. Measure the Channel Power (RSSI) for both –15 dBm and –50 dBm (as in
with the calibration factor frequency of 3600.5 MHz in
3-100
Table A-148, "Mobile WiMAX Channel Power Accuracy Power
Step 2. Record the result in
Step 8. Record the result in
PN: 10580-00177 Rev. D
Performance Verification 2
A-48.
Table A-148.
Table A-148.
Table A-149, "Mobile WiMAX
Table A-149.
Table A-149.
Step 2
Step 4 part a ) and record the measured results
A-48.
through Step 11, but
MS2721B MM