Chapter 3 — Options Verification 3-7 Option 883, LTE Signal Analyzer Verification
MS2720T MM PN: 10580-00342 Rev. D 3-27
13. Record the MS2720T Channel Power reading into the test record in the column labeled “Measured
Channel Power” (row labeled 750 MHz, –50 dBm) in Table A-91.
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, –50 dBm) in Table A-91.
15. Verify that the error is within specification.
16. Set the calibration factor frequency of the power sensor to 2150 MHz.
17. Set MG3700A Frequency to 2150 MHz. Press the Set key.
18. Change the Center Frequency of the MS2720T to 2150 MHz.
19. Measure the Channel Power for –10 dBm and –50 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 2150 MHz) in Table A-91.
20. For instruments with option 543, press the Setup main menu key and set the BW to 20 MHz then repeat
Step 5a through Step 19 using the E-TM_3-1_20M pattern for Step 5i.
LTE Frequency Error Tests
The tests in this section verify the function of the optional LTE Signal Analyzer in Model MS2720T
Spectrum Master.
Procedure
1. Connect the Power Sensor to the power meter and zero the sensor.
2. Set the Power Meter Measurement MODE to True RMS, set Averaging MODE to Moving, and set
Averaging NUMBER to 256.
3. Set the calibration factor frequency of the power sensor to 750 MHz.
4. Connect the Power Sensor, 1870A splitter, 10 dB attenuators (quantity 2), as shown in Figure 3-9.
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_DL_E-TM is highlighted.
f. Press the Set key.
g. Press the (F6) submenu key “Return”
h. Press the Set key. The “Select Package” list box will appear. Again select LTE_DL_E-TM and Set.
i. Another file list will appear. Select (highlight) E-TM_3-1_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 the output On.
Note The LTE pattern requires a Waveform Data license MX370108A that must be purchased.
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