3-5 Option 881 WCDMA/HSDPA Signal Analyzer Verification Chapter 3 — Options Verification
3-18 PN: 10580-00342 Rev. D MS2720T MM
Procedure
1. Turn on the MG3700A Vector Signal Generator and the ML2438A power meter.
2. Connect the power sensor to the power meter and calibrate the sensor.
3. Connect the MG3700A, splitter, attenuator, power meter, and sensor as shown in Figure 3-7.
4. Press the On/Off key to turn on the MS2720T and wait until the measurement display appears. Then
press the Shift key then press the Mode (9) key to activate the mode selection menu.
5. Use the Up/Down arrow keys to select WCDMA and press the Enter key.
6. Press the Shift key, the Preset (1) key, and then the Preset submenu key.
7. On the MG3700A, press the Preset key (Yellow key on the upper-left corner).
8. Press the Down Arrow key to select Yes.
9. Press the Set key (Note that two Set keys are available, and they both do the same thing).
10. Press the (F1) submenu key to select “Load File to Memory”
11. Press the (F1) submenu key again to select “Select Package”
12. Using the Down Arrow key, step through the selection list until the WCDMA(BS Tx test) option is
highlighted.
13. Press the Set key.
14. Press the (F6) submenu key, Return.
15. Press the Set key.
16. Using the Down Arrow key, step through the selection list until the TestModle_1_16DPCH option is
highlighted.
17. Press the Set key.
18. Press the MOD On/Off key and verify that the Modulation indicator on the display is On
.
19. Press the Frequency key, then enter the frequencies from Table A-85, “RF Measurements, WCDMA
Occupied Bandwidth (OBW)” on page A-41, starting with 881.5, and press the MHz key.
20. Press the Level key, then enter –2, and press the dBm key.
21. Use the knob to adjust the power level so that the power meter reads –20 dBm. Record the reading in the
“Power Meter Reading” column of Table A-85.
22. On MS2720T, press the Center Freq submenu key, and enter the frequencies from Table A-85, starting
with 881.5 MHz, then press the Enter key.
23. Press the Measurements main menu key, then the RF Measurement submenu key, and press
Channel Spectrum submenu key.
24. Press the Amplitude main menu key, then press the Adjust Range submenu key.
25. Record the OBW reading in the “OBW” column of Table A-85 and verify that it is within
4.2 MHz ± 100 kHz.
26. Repeat Step 19 through Step 25 for the other frequencies in Table A-85.
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