Spectrum Analyzer Performance Verification 3-3 Displayed Average Noise level (DANL)
MS20xxC MM PN: 10580-00307 Rev. D 3-5
24. Repeat Step 17 through Step 23 for the other Start and Stop frequencies that are listed in Table A-10 for
MS2036C, in Table A-31 for MS2037C or in Table A-55 for MS2038C.
25. For each measured 100 kHz RBW value in Table A-10 for MS2036C, in Table A-31 for MS2037C or in
Table A-55 for MS2038C in Appendix A, normalize the value to 1 Hz RBW by subtracting 50 dB. For
example, if the marker shows a value of –100 dBm at 100 kHz RBW, then the calculated value at
1HzRBW is –150dBm.
Example equation:
–100 dBm) – (50 dB) = –150 dBm
26. Record the calculated values in the Calculated Value (1 Hz RBW) column in Table A-10 for MS2036C, in
Table A-31 for MS2037C or in Table A-55 for MS2038C in Appendix A. Verify that the calculated value is
within specification.
Displayed Average Noise Level with Preamp On
27. Press the Amplitude hard key and then the Reference Level soft key.
28. Enter –50 and press the dBm soft key to set Reference Level to –50 dBm.
29. Ensure that Atten Lvl is set to 0 dB.
30. Press the Pre Amp On/Off soft key to turn Pre Amp On.
31. Press the Freq hard key and then the Start Freq soft key.
32. Enter 10 and then press the MHz soft key to set Start Frequency to 10 MHz.
33. Press the Stop Freq soft key.
34. Enter 4 and then press the GHz soft key to set Stop Frequency to 4 GHz.
35. Wait until one sweep is completed.
36. Press the Marker hard key and then the Peak Search soft key.
37. Record the Marker 1 amplitude reading into the Measured Value (100 kHz RBW) column of Table A-11,
“Spectrum Analyzer DANL with Preamp On” on page A-7 for MS2036C, of Table A-32, “Spectrum
Analyzer DANL with Preamp On” on page A-17 for MS2037C or of Table A-56, “Spectrum Analyzer
DANL with Preamp On” on page A-30 for MS2038C in Appendix A.
38. Repeat Step 31 through Step 37 for the other Start and Stop frequencies listed in Table A-11 for
MS2036C, in Table A-32 for MS2037C or in Table A-56 for MS2038C.
39. For each measured 100 kHz RBW value in Table A-11 for MS2036C, in Table A-32 for MS2037C or in
Table A-56 for MS2038C in Appendix A, normalize the value to 1 Hz RBW by subtracting 50 dB. For
example, if the marker shows a value of –110 dBm at 100 kHz RBW, then the calculated value at
1HzRBW is –160dBm.
Example equation:
–110 dBm) – (50 dB) = –160 dBm
40. Record the calculated values into the Calculated Value (1 Hz RBW) column in Table A-11 for MS2036C,
in Table A-32 for MS2037C or in Table A-56 for MS2038C in Appendix A. Verify that the calculated
value is within specification.
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