3-6 Option 882, TDSCDMA Signal Analyzer Option Verification Chapter 3 — Options Verification
3-24 PN: 10580-00342 Rev. D MS2720T MM
Setup Procedure
1. Zero the power sensor prior to connecting to the power splitter.
2. Connect the equipment as shown in Figure 3-8.
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 2010 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 power meter to Averaging, Moving, and 256 samples.
5. Set the MS2720T to TDSCDMA Signal Analyzer mode and Preset the instrument.
TDSCDMA Channel Power, Frequency Error, EVM, and Tau Test Procedure
6. On the MG3700A, press the Preset key (yellow key on the upper-left corner).
7. Press the Down Arrow key or turn the knob to select Yes.
8. Press the Set key (Note that two Set keys are available, and they both do the same thing).
9. Press the (F1) submenu key to select “Load File to Memory”.
10. Press the (F1) submenu key again to select “Select Package”.
11. Press the Down Arrow key to step through the selection list until the TDSCDMA(MX370001A) option is
highlighted.
12. Press the Set key.
13. Press the Return (F6) submenu key.
14. Press the Set key. The Select Package dialog box appears. Use the rotary knob to highlight
TDSCDMA(MX370001A) and press the Set key to select.
15. Another file list appears. Use the rotary knob to select rmc-P-CCPCH_bs_dl and press the Set key to
select.
16. Press the MOD On/Off key to turn the Modulation LED On and verify that the “Playing” indicator is
flashing in the center of the LCD.
17. Press the Frequency key and enter 2010 MHz.
18. Press the Level key, enter –20, and press the dBm key.
19. Adjust the MG3700A output so that the power meter reads –45dBm± 0.5dB, and record the actual
reading into the “Power Meter Reading” row of Table A-90, “Option 882, TDSCDMA (at 2010 MHz,
–45 dBm Level)” on page A-44.
20. On the MS2720T, press the Freq main menu key, then press the Center Freq submenu key and enter
2010 MHz as center frequency.
21. Press the Measurements main menu key and press the TDSCDMA Summary submenu key (a red dot is
displayed on the label).
22.
Press the Setup hard key and press the Trigger submenu key. Then change Trigger Type to Ext by
pressing the Trigger Type submenu key twice (or until Ext
is underlined). Then wait 15 seconds to allow
the MS2720T to update its measured results.
23. Record the “Displayed Channel Power” into Table A-90, then subtract the “Displayed Channel Power”
value from the “Power Meter Reading” in Step 19. Then record the “Calculated Channel Power Error”
into Table A-90.
24. Record the Displayed Frequency Error and Tau into Table A-90.
25. Verify that the measured values in Step 23 or Step 24 (or both) are within specifications.
Note The TDSCDMA pattern requires a Waveform Data license (MX370001A) that must be purchased.
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