Anritsu Spectrum Master MS2721B Maintenance Manual page 143

Performance Verification 2
18. Record the MS2721B Channel Power reading, MeasCP(–25), to the –25 dBm "Test Level" row of the
"Measured Value" column in
Pre Amp OFF, Option 64" on page
19. Calculate the difference, Delta(–25), by using the following formula (where MeasCP(–25) is from the
"Measured Value" column in
MN63A Attenuation AT(–25), AT(–15), AT(–50), and AT(–43), Option 64" on page
Delta(–25) = M(Sa) – MeasCP(–25)
20. Record the result in the Delta (Δ) column in
21. Calculate AT(–15) by using the following formula (where AT(–25) is from
AT(–15) = AT(–25) – 10
22. Record the AT(–15) value in
23. Set the MN63A attenuation to AT(–15).
Note The Over Range message on the MS2721B is normal.
24. Record the MS2721B Channel Power reading, MeasCP(–15), to the –15 dBm "Test Level" row of the
"Measured Value" column in
Pre Amp OFF, Option 64" on page
25. Calculate the Delta at –15 dBm Input by using the following formula:
Delta(–15) = M(Sa) + 10 – MeasCP(–15) + Delta(–25)
26. Record the result to the Delta column in
27. Calculate the value of AT(–50) by using the following formula:
AT(–50) = AT(–25) + 25
28. Record the value of AT(–50) in
AT(–15), AT(–50), and AT(–43), Option 64" on page
29. Adjust the MN63A attenuation to AT(–50).
30. Set the Reference Level on the MS2721B to –50 dBm and turn on the Pre Amp.
31. Record the MS2721B Channel Power reading, MeasCP(–50), to the –50 dBm "Test Level" row of the
"Measured Value" column in
Pre Amp ON, Option 64" on page
32. Calculate the Delta at –50 dBm Input, Delta(–50), by using the following formula:
Delta(–50) = M(Sa) – 25 – MeasCP(–50) + Delta(–25)
33. Record the result to the Delta column in
34. Calculate the AT(–43) by using the following formula:
AT(–43) = AT(–25) + 18
35. Record the value of AT(–43) in
AT(–15), AT(–50), and AT(–43), Option 64" on page
36. Set the MN63A attenuation to AT(–43).
Note The Over Range message on the MS2721B is normal.
37. Record the MS2721B Channel Power reading, MeasCP(–43), in the –43 dBm "Test Level" row of the
"Measured Value" column in
MS2721B MM
3-13 DVB-T/H Signal Analyzer (Options 64 and 57) Verification
Table A-136, "DVB-T/H Analyzer 1 dB Compression Level Channel 21 with
A-45.
Table A-136, and M(Sa) is from
Table A-136, and verify that the result is less than 1 dB.
Table A-132.
Table A-136, "DVB-T/H Analyzer 1 dB Compression Level Channel 21 with
A-45.
Table A-136, and verify that it is less than 1 dB.
Table A-132, "Readings for Sensor A and MN63A Attenuation AT(–25),
Table A-139, "DVB-T/H Analyzer 1 dB Compression Level Channel 21 with
A-45.
Table A-139, and verify that it is less than 1 dB.
Table A-132, "Readings for Sensor A and MN63A Attenuation AT(–25),
Table A-139.
PN: 10580-00177 Rev. D
Table A-132, "Readings for Sensor A and
Table
A-41.
A-41.
A-41):
A-132):
3-89