Nokia RM-235 Service Manual page 134

5. Click Start.l
6. Set the spectrum analyzer for power level tuning:
Frequency
Span
Sweep time
Trigger
Resolution BW
Video BW
Reference level offset
Reference level
A power meter with a peak power detector can be also used. Remember to take the attenuations into
account.
7. Adjust power for all bold power levels to correspond the Target dBm column by pressing + or – keys.
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Channel frequency:
• 836.6 MHz GSM850
• 897.4MHz GSM900
• 1747.8MHz GSM1800
• 1880MHz GSM1900
0 Hz
2ms
Video triggering (-10dBm)
3MHz
3MHz
sum cable attenuation with module jig
attenuation
33dBm
RM-235
RF troubleshooting
Issue 1