Description Of Npm-2Nx Rf Auto-Tune Tuning; Tdma Rf Tunings; Tdma Rx Tunings - Nokia NPM-2NX Troubleshooting Manual

CCS Technical Documentation

Description of NPM-2NX RF Auto-tune Tuning

TDMA RF tunings

TDMA RX tunings

AFC tuning
• Purpose of the tuning is to correct phone frequency error
• If AFC tuning fails it might be due to:
• Problems with lower band signal path, synthesizer etc.
• If AFC DAC tuning value or step size is too low or high it might be due to faulty
VCTCXO component.
• (UEM)
• (UPP)
RX LP and AMP2 filter tunings
Issue 1 07/02 ãNokia Corporation
NPM-2NX
Troubleshooting
Page 61