Nokia RM-42 Service Manual page 257

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RF Troubleshooting and Manual Tuning Guide

Reference level offset:

Reference level:

Input attenuation:

Resolution bandwidth:

Video bandwidth:

Trigger level:

Marker step:

After setting the spectrum analyzer, click OK.

Measure the power levels with a marker.

Take the first measurement from 250 us after the trigger, the second from 750 us, the third on 1225 us

and so on in every 500 us until the table is filled.

It must be possible to measure power levels down to –68 dBm. The measured power levels must

be monotonously decreasing.

Make sure that the marker is not measuring the level of noise spike on lower levels.

9241872 (Issue 1)

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Cable attenuations + adapter attenuation

(20 dB) To minimize the noise floor, manually

select as small value as possible for the mentioned

reference level .

RMS detector

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