3-10 Option 884, EVDO Signal Analyzer Option Verification Chapter 3 — Options Verification
3-38 PN: 10580-00342 Rev. D MS2720T MM
Set up Procedure
1. Zero the power sensor prior to connecting to the power splitter.
2. Connect the equipment as shown in Figure 3-12.
3. On the power meter, press the Sensor key, the Cal Factor submenu key, and then the Freq submenu key.
Use the keypad to enter 870.03 MHz as the input signal frequency, which sets the power meter to the
proper power sensor calibration factor. Press the System key to display the power reading.
4. Set the MS2720T mode to EVDO Signal Analyzer. Preset the instrument.
8PSK Modulation Channel Power, Frequency Error, Rho, and Tau Tests
Test Procedure
1. On the MG3700A, press the Preset key (Yellow key on the upper-left corner).
2. Press the Down Arrow key or turn the knob to select Yes.
3. Press the Set key (Note that two Set keys are available, and they both do the same thing).
4. Press the (F1) submenu key to select “Load File to Memory”.
5. Press the (F1) submenu key again to select “Select Package”.
6. Using the Down Arrow key, step through the selection list until the CDMA2000_1xEVDO option is
highlighted.
7. Press the Set key.
8. Press the (F6) submenu key, Return.
9. Press the Set key. The Select Package box is displayed. Use the rotary knob to highlight
CDMA2000_1xEVDO and press the Set key to select.
10. Another File List is displayed. Use the rotary knob to select FWD_921_6KBPS_2SLOT and press the Set
key to select.
11. Press the MOD On/Off key to turn the Modulation LED On, and verify that the “Playing” indicator in the
center of the LCD is flashing.
12. Press the Frequency key, and enter 870.03 MHz.
13. Press the Level key, enter –30, and press the dBm key.
14. Adjust the MG3700A output so that the power meter reads –50 dBm ± 0.2 dB, and record the actual
value as shown on the power meter into Table A-103, “RF Measurements, At 870.03 MHz, –50 dBm
Level, 921.6 kps 8PSK Modulation” on page A-51.
15. On the MS2720T, press the Freq main menu key, and enter 870.03 MHz as Center Freq.
16. Press the Measurements main menu key, and press EVDO Summary
(a red dot is displayed on the label).
17. Press the Setup main menu key and press PN Setup. Then change PN Trigger to Ext by pressing the
PN Trigger submenu key twice. Then wait 15 seconds to allow the MS2720T to update its measured
results.
18. Record the “MS2720T Reading”, the displayed Channel Power value, into Table A-103.
19. Subtract the “MS2720T Reading” of displayed Channel Power value from the “Power Meter Reading” in
Step 14. Then record the “Calculated Channel Power Error” into Table A-103.
20. Record the displayed Freq Error, Rho Pilot and Tau into Table A-108, “Demodulation, At 870.03 MHz,
–50 dBm Level, 921.6 kps 8PSK Modulation” on page A-52.
21. Verify that the measured values in Step 19 and Step 20 are within specifications.
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