Tx Power Tuning Gsm850 - Nokia NPM-10 Series Troubleshooting Instructions

CCS Technical Documentation

TX Power Tuning GSM850

Entering TX Pwr Lvl tuning will bring you to the screen shown above. Phoenix automati-
cally loads the coefficients currently stored in PM. DUT should be transmitting at the
channel and frequency shown in the lower left corner of the active screen.
Select the modulation 1, 0 or random in Tx Data Type. Select random if a GSM tester is
used. Then it can be synchronised to the burst.
Select Tx PA Mode High. Note that Low PA Mode tuning is not to be used.
First power tuning should be setting base level to –30dBm.
Tune the highlighted values (in BOLD) to the target value highlighted in blue (Use aver-
age burst power) also Note: PL5 target value is 32dBm not 32.5dBm.
After tuning the bold power levels, select "Continue to next band". Phoenix will then cal-
culate the coefficients for the remaining power levels, save them to permanent memory,
and will proceed to 1900MHz power level tuning.
Issue 1 03/2003
Nokia Corporation
Troubleshooting Instructions RF
Confidential
NPM-10
Page 43