Spectrum Analyzer Verification 2-7 Displayed Average Noise Level (DANL)
S3xxE MM PN: 10580-00253 Rev. J 2-17
For example, if the marker shows a value of –100 dBm at 100 kHz RBW, the calculated value at 10 Hz
RBW is –140 dBm.
23. Enter the calculated values in the test records. Use the Calculated for 10 Hz RBW column of
Table A-11.
24. Verify that the calculated value is less than or equal to the value in the Specification column of
Table A-11.
25. Press the Amplitude soft key, then press the Reference Level soft key.
26. Use the keypad to enter –50 and press the dBm soft key.
27. Press the Preamp On/Off soft key to turn the preamp On.
28. Repeat Step 11 through Step 24.
29. Record the Marker reading and calculated value in the test record using Table A-12, “Spectrum Analyzer
DANL with Pre Amp On”.
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