Chapter 3 — Options Verification 3-4 Option 880, GSM/GPRS/EDGE Signal Analyzer Verification
MS2720T MM PN: 10580-00342 Rev. D 3-9
21. Adjust the Level of the MG3700A so that the power meter reads –50 dBm ± 0.2 dB. Record the adjusted
power reading into the “Adjusted Output Power” row of Table A-67, “RF Measurements, At 850 MHz,
–50 dBm Level, GsmBurst_8slot Pattern (GSM)” on page A-36. Then wait 15 seconds to allow the
MS2720T to update its measured results.
22. Record the measured “Burst Power” value into the “Displayed Burst Power” row of Table A-67, then
subtract the “Displayed Burst Power” value from the “Adjusted Output Power” reading that was
obtained in Step 21. Then record the “Calculated Burst Power Error” and the displayed value of
“Frequency Error” into Table A-67.
23. Record the displayed Phase Err RMS (deg) into Table A-75, “Demodulation1, At 850 MHz, –50 dBm
Level, GsmBurst_8slot Pattern (GSM)” on page A-39.
24. Verify that the measured values in Step 22 and Step 23 are within specifications.
25. Change the frequency of MG3700A to 1800 MHz.
26. On the power meter, press the Sensor key, the Cal Factor submenu key, and then the Freq submenu. Use
the keypad to enter 1800 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.
27. Adjust the level of the MG3700A so that the power meter reads –10 dBm ± 0.2 dB. Record the adjusted
power reading into the “Adjusted Output Power” row of Table A-68, “RF Measurements, At 1800 MHz,
–10 dBm Level, GsmBurst_8slot Pattern (GSM)” on page A-37.
28. On the MS2720T, set the Center Freq to 1800 MHz. Then wait 15 seconds to allow the MS2720T to update
its measured results.
29. Record the measured “Burst Power” value into the “Displayed Burst Power” row of Table A-68, then
subtract the “Displayed Burst Power” value from the “Adjusted Output Power” reading that was
obtained in Step 27. Then record the “Calculated Burst Power Error” and the displayed value of
“Frequency Error” into Table A-68.
30. Record the displayed Phase Err RMS (deg) into Table A-76, “Demodulation, At 1800 MHz, –10 dBm
Level, GsmBurst_8slot Pattern (GSM)” on page A-39.
31. Verify that the measured values in Step 29 or
Step 30 or both are within specifications.
32. On the MG3700A, change the selected pattern to GsmBurst_1slot.
33. Adjust the level of the MG3700A so that the power meter reads –50 dBm ± 0.2 dB. Record the adjusted
power reading into the “Adjusted Output Power” row of Table A-69, “RF Measurements, At 1800 MHz,
–50 dBm Level, GsmBurst_1slot Pattern (GSM)” on page A-37. Then wait 15 seconds to allow the
MS2720T to update its measured results.
34. Record the measured “Burst Power” value into the “Displayed Burst Power” row of Table A-69, then
subtract the “Displayed Burst Power” value from the “Adjusted Output Power” reading that was
obtained in Step 33. Then record the “Calculated Burst Power Error” and the displayed value of
“Frequency Error” into Table A-69.
35. Record the displayed Phase Err RMS (deg) into Table A-77, “Demodulation, At 1800 MHz, –50 dBm
Level, GsmBurst_1slot Pattern (GSM)” on page A-39.
36. Verify that the measured values in Step 34 or Step 35 or both are within specifications.
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