Power Control Loop - Nokia NPM-2NX Troubleshooting Manual

CCS Technical Documentation
Is Itot TDMA 350...500
GSM 200 ... 300 mA?
Check PA output power
and gain. Gain: ~30 dB
Pout: TDMA ~29 dBm
GSM ~32 dBm
Check PWRDET N900
insertion loss
Check duplexer Z962 ,
diplexer Z908 and RF
connector X900
insertion loss
Dupl IL ~2.2 dB
Dipl ~0.35 dB
RF conn ~0.1 dB
Start Power control
troubleshooting

Power control loop

Basically, the power detection is done with Power detector module and power control is
done inside SAFARI. Power detection is similar for both bands, except both bands have
Issue 1 07/02
NOK
OK
NOK
IL< 0.3 dB
OK
NOK
OK
ãNokia Corporation
Change PA N901
Change PWRDET
N900
Change Z962 or Z908
or RF connector
NPM-2NX
Troubleshooting
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