Anritsu Spectrum Master MS2720T - Fixed Wimax Residual EVM and Frequency Error Tests

Chapter 3 — Options Verification 3-11 Option 885, Fixed WiMAX Signal Analyzer Verification
MS2720T MM PN: 10580-00342 Rev. D 3-43
15. Verify that the error is within specification.
16. Set the calibration factor frequency of the power sensor to 3600.5 MHz.
17. Set MG3700A frequency to 3600.5 MHz.
18. Change the center frequency of the MS2720T to 3600.5 MHz.
19. Repeat Step 6 through Step 15 using the 3600.5 MHz setting.
20. Verify that the errors are within specification.
21. Set the calibration factor frequency of the power sensor to 5600.5 MHz.
22. Set MG3700A frequency to 5600.5 MHz.
23. Change the center frequency of the MS2720T to 5600.5 MHz.
24. Repeat Step 6 through Step 15 using the 5600.5 MHz setting.
Fixed WiMAX Residual EVM and Frequency Error Tests
Procedure
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 the Power Sensor, 1870A splitter, and 10 dB attenuators as shown in Figure 3-13.
5. 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 WiMAX 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 WiMAX and press Set.
i. Another file list is displayed. Select (highlight) Mx10g32.
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.
6. Adjust the MG3700A Level setting with the knob so that the power meter reads –15.0 dBm ± 0.2 dB.
7. Set the MS2720T to Fixed WiMAX Signal Analyzer mode and Preset the instrument.
8. 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 CP Ratio submenu key (under the Setup main menu key) and set the CP Ratio to 1/32.
d. Press the Measurements main menu key, and press Demodulator, then press Modulation Summary.