Anritsu Spectrum Master MS2721B Maintenance Manual

3-9 WCDMA/HSDPA Signal Analyzer (Options 44, 45, and 65) Verification Performance Verification 2
3-54 PN: 10580-00177 Rev. D MS2721B MM
11. Press the (F1) soft key again to select "Select Package"
12. Using the Down Arrow key step through the selection list until the "W-CDMA(BS Tx test)" option is
highlighted.
13. Press the Set key.
14. Press the (F6) soft key, "Return"
15. Press the Set key.
16. Using the Down Arrow key, step through the selection list until the "TestModel_1_16DPCH" option is
highlighted.
17. Press the Set key.
18. Press the MOD On/Off key and verify that the Modulation indicator on the display is ON.
19. Press the Frequency key, then enter 881.5 and press the MHz soft key.
20. Press the Level key, then enter –2 and press the dBm key.
21. Use the knob to adjust the power meter to read –20 dBm and record the Power Meter reading in the
"Power Meter Reading" column of Table A-104, “WCDMA RF Channel Power Accuracy, Option 44”
on page A-34.
22. On the MS2721B, press the Center Freq soft key, enter 881.5, and then press the Enter key.
23. Press the Measurements function hard key, then the RF Measurement soft key and press ACLR.
24. Press the Amplitude function hard key, then press the Adjust Range soft key.
25. Record the measured CH 1 power in dBm to the "Measured RF Channel Power" column of Table A-104.
26. Calculate the RF Channel Power Error by using the following formula:
RF Channel Power Error (dB) =
Measured RF Channel Power - 0.246 - Power Meter reading
27. Record calculated value to the "RF Channel Power Error" column of Table A-104, and verify that it is
within specification (± 1.25 dB).
28. Record all four measured Adjacent Channel Leakage Ratios in dB at –10 MHz Offset, –5 MHz Offset,
+5 MHz Offset, and +10 MHz Offset in the "Measured ACLR" column of
Table A-105, “WCDMA ACLR
Accuracy, Option 44” on page A-35.
29. Calculate the ACLR Error at –10 MHz and +10 MHz Offset by using the following formula:
ACLR Error at -10 MHz or 10 MHz Offset =
10 LOG
10
(10
(-50/10)
+ 10
(Measured_ACLR/10)
) - (-50) dB
30. Record the calculated results into the corresponding cells in the "Calculated ACLR Error" column of
Table A-105, and verify that it is within specification.
31. Calculate the ACLR Error at 5 MHz Offset by using the following formula:
ACLR Error at -5 MHz or 5 MHz Offset =
10 LOG
10
(10
(-45/10)
+ 10
(Measured_ACLR/10)
) - (-45) dB
32. Record the Calculated ACLR Error in the corresponding cells in the "Calculated ACLR Error" column of
Table A-105, and verify that it is within specification.
33. Repeat Step 19 through Step 32 for the other frequencies in Table A-105.
HSDPA RF Channel Power Accuracy and ACLR Verification (Option 44)
The tests in this section can be used to verify the RF Channel Power Accuracy and Adjacent Channel Leakage
Ratio (ACLR) Accuracy for HSDPA signal in WCDMA/HSDPA Signal Analyzer Mode.
Procedure:

Anritsu Spectrum Master MS2721B Specifications

General

Brand	Anritsu
Model	Spectrum Master MS2721B
Category	Measuring Instruments
Language	English