Chapter 3 — Options Verification 3-8 Option 883, TD-LTE Signal Analyzer Verification
MS2720T MM PN: 10580-00342 Rev. D 3-31
5. Set the MG3700A as follows:
a. Press the yellow Preset button (answer yes to the question).
b. Press the Set key. Note: Both Set keys on the MG3700A perform the same function.
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 LTE_TDD 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 LTE_TDD and then the
Set key.
i. Another file list is displayed. Select (highlight) TDLTE-E-TM-1-1_10M.
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 750 MHz.
m. Press the Level key, then enter 2dBm.
n. Turn on the output.
6. Adjust the MG3700A Level setting with the knob so that the power meter reads –12.0 dBm ± 0.5 dB.
7. Set the MS2720T to TD-LTE 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 750 MHz.
b. Press the Measurements main menu key and select RF, then select Channel Spectrum.
9.
Record the MS2720T Channel Power reading into the column labeled “Measured Channel Power”
(row labeled 750 MHz, –12 dBm) in Table A-93, “RF Measurements, TD-LTE Channel Power Accuracy”
on page A-47.
10. Calculate the Channel Power Error by subtracting the MS2720T “Channel Power” reading from the
power meter reading in Step 6. Record the result into the test record in the column labeled “Error”
(row labeled 750 MHz, –12 dBm) in Table A-93.
11. Verify that the error is within specification.
12. Adjust the MG3700A Level setting to approximately –18 dBm so that the power meter reads
–30.0 dBm ± 0.5 dB.
13. Record the MS2720T Channel Power reading into the test record in the column labeled “Measured
Channel Power” (row labeled 750 MHz, –30 dBm) in Table A-93.
14. Calculate the Channel Power Error by subtracting the MS2720T “Channel Power” reading from the
power meter reading that was recorded in Step 12. Record the result into the test record in the column
labeled “Error” (row labeled 750 MHz, –30 dBm) in Table A-93.
15. Verify that the error is within specification.
16. Set the calibration factor frequency of the power sensor to 2350 MHz.
17. Set MG3700A Frequency to 2350 MHz. Press the Set key.
18. Change the Center Frequency of the MS2720T to 2350 MHz.
19. Measure the Channel Power for –12 dBm and –30 dBm and then record the measured result and the
calculated error into the test record in the column labeled “Measured Channel Power” and in the column
labeled “Error” (rows labeled 2350 MHz) in Table A-93.
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