3-12 Option 885, Mobile WiMAX Signal Analyzer Verification Chapter 3 — Options Verification
3-46 PN: 10580-00342 Rev. D MS2720T MM
Setup
1. Connect the Power Sensor to the power meter and zero the sensor.
2. Set the Power Meter Measurement MODE to True RMS, set Averaging MODE to Moving, and set
Averaging NUMBER to 256.
3. Set the calibration factor frequency of the power sensor to 2600.5 MHz.
4. Connect all of the test equipment as shown in Figure 3-14.
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) 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 2dBm. 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 Table A-117, “RF Measurements, Mobile
WiMAX Channel Power Accuracy Power Error (2600.5 MHz and –15.0 dBm)” on page A-56.
3. Set the MS2720T to Mobile WiMAX Signal Analyzer mode and Preset the instrument.
4. Set the MS2720T 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 Frame Length submenu key and set the Frame Length to 10 ms.
d. Press the Measurements main menu key, press RF, and then press Power vs. Time.
5. Record the “MS2720T Reading”, the displayed Channel Power (RSSI) value, into Table A-117.
6. Calculate the Channel Power Error by subtracting the “MS2720T reading” from the “Power Meter
Reading” in Step 2. Record the result into Table A-117.
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 Table A-118, “RF
Measurements, Mobile WiMAX Channel Power Accuracy Power Error (2600.5 MHz and –50.0 dBm)”
on page A-56.
9. Record the “MS2720T Reading”, the displayed Channel Power (RSSI) value, into Table A-118.
To Next Page
Loading...
Need help?
General
