Spectrum Analyzer Performance Verification 3-3 Displayed Average Noise Level (DANL)
Model MS20xxB MM PN: 10580-00303 Rev. D 3-5
23. Repeat Step 12 through Step 22 for other frequency settings in Table A-9 for MS2034B or Table A-34 for
MS2035B in Appendix A. Change RBW and VBW setting as applicable.
24. For each measured 100 kHz RBW value in Table A-9 for MS2034B or Table A-34 for MS2035B in
Appendix A, normalize it to 10 Hz RBW value by subtracting 40 dB from the 100 kHz RBW measured
value.
For example, if the marker shows a value of –100 dBm at 100 kHz RBW, then the calculated value at
10 Hz RBW is –140 dBm (–100 dBm – 40 dB = –140 dBm).
25. Enter the calculated values into the 10 Hz RBW Calculated Value column of Table A-9 for MS2034B or
Table A-34 for MS2035B in Appendix A.
26. Verify that the calculated value is less than or equal to the value in the Specification column of
Table A-9 for MS2034B or Table A-34 for MS2035B in Appendix A.
DANL Test with Preamp On
27. Press the Amplitude button on the touch screen main menu and then the Reference Level button on the
touch screen submenu.
28. Use the numeric keypad to enter –50 and press the dBm submenu button.
29. Press the Pre Amp On/Off submenu button to turn the preamp On.
30. Press the Freq main menu button and then the Start Freq submenu button.
31. Use the numeric keypad to enter 10 and then press the MHz submenu button.
32. Press the Stop Freq submenu button.
33. Use the numeric keypad to enter 2.4 and then press the GHz submenu button.
34. Wait until one sweep is completed.
35. Press the Marker main menu button and then the Peak Search submenu button.
36. Record the Marker 1 amplitude reading into Appendix A in the 100 kHz RBW Measured Value column of
Table A-10, “Spectrum Analyzer DANL with Preamp On” on page A-5
for MS2034B or Table A-35,
“Spectrum Analyzer DANL with Preamp On” on page A-17 for MS2035B.
37. Repeat Step 30 through Step 36 for other frequency settings in Table A-10 for MS2034B or Table A-35 for
MS2035B in Appendix A.
38. For each measured 100 kHz RBW value in Table A-10 for MS2034B or Table A-35 for MS2035B in
Appendix A, normalize it to 10 Hz RBW value by subtracting 40 dB from the 100 kHz RBW measured
value.
For example, if the marker shows a value of –100 dBm at 100 kHz RBW, then the calculated value at
10 Hz RBW is –140 dBm (–100 dBm – 40 dB = –140 dBm).
39. Enter the calculated values into the 10 Hz RBW Calculated Value column of Table A-10 for MS2034B or
Table A-35 for MS2035B in Appendix A.
40. Verify that the calculated value is less than or equal to the value in the Specification column of Table A-10
for MS2034B or Table A-35 for MS2035B in Appendix A.
Note
The noise floor consists of totally random signals where a spur is a fixed spike of varying amplitude
that is always visible.
Note
The noise floor consists of totally random signals where a spur is a fixed spike of varying amplitude
that is always visible.
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