User Guide

NSW-4
Disassembly & Troubleshooting
PAMS Technical Documentation
Page 32
Issue 1 Final
Draft 08/00
 Nokia Mobile Phones Ltd.
Set marker at middle of slot.
Check that spectrum analyzer frequency is correct
Set settings for pulse power meter
Do calibration if needed.
Set correct frequency
Set Ref LVL offset ––> Attenuation to Antenna Pad
Set correct duty cycle, 33,3 % in digital mode and 100 % at
analog mode.
Select Tuning –> Using WinTesla Select Tuning –> TX power
–> LowBand/HighBand –>EEPROM values
All four tuning channels have to be tuned. Repeat tuning for A, B, C and
D tuning channel. Tuning channel change read old tuning values from
phone’s EEPROM.
Adjust power level by clicking the + and – buttons, power level change is
done by keyboard keys ↑ and ↓ .
Tune power levels, which are shown by ”# for calculate”
Press Calculate button to calculate other power levels.
Check tuning, Do fine tuning if needed.
Once all TX tuning channels are correct, press SAVE button
.
Tuning done, if both Analog mode and 800 MHz and 1900 MHz digital
mode tuned.
Difference between measured TX power from Test Pad of panel and
Antenna Pad, must be taken care so that measurements from An-
tenna Pad give the correct results.
800MHz Analog TX output power
Power level RF Power at ext. Anten-
na pad
Tuning target tolerance Testing Limits
2 22.0 dBm +/– 0.1 dB +0.5…– 0.5 dB
22.5 – 21.5 dBm
800MHz Digital TX output power
Power level RF Power at ext. Anten-
na pad
Tuning target tolerance Testing Limits
2 26.8 dBm +/– 0.1 dB +0.5/– 1.0 dB
27.3 – 25.8 dBm
3 23.5 dBm +/– 1 dB +/– 2.0 dB
4 20.0 dBm +/– 1 dB +/– 2.0 dB
5 16.0 dBm +/– 1 dB +/– 2.0 dB
6 12.0 dBm +/– 1 dB +/– 2.0 dB