User Guide

NSW-4
Disassembly & Troubleshooting
PAMS Technical Documentation
Page 33
Issue 1 Final Draft
08/00
 Nokia Mobile Phones Ltd.
Testing LimitsTuning target toleranceRF Power at ext. Anten-
na pad
Power level
7 8.0 dBm +/– 1 dB +/– 2.0 dB
8 4.0 dBm +/– 1 dB +/– 2.0 dB
9 –0.0 dBm +/– 1 dB +/– 2.0 dB
10 –4.0 dBm +/– 1 dB +/– 2.0 dB
Check, that power level PL2 TXC DAC value is on allowed range
+50...300.
TDMA1900 TX output power
Power level RF Power at ext. Anten-
na pad
Tuning target tolerance Testing Limits
2 25.9 dBm +/– 0.1 dB +0.5…– 1.0 dB
26.4 – 24.9 dBm
3 23.0 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
7 8.0 dBm +/– 1 dB +/– 2.0 dB
8 4.0 dBm +/– 1 dB +/– 2.0 dB
9 0.0 dBm +/– 1 dB +/– 2.0 dB
10 –4.0 dBm +/– 1 dB +/– 2.0 dB
Check, that power level PL2 TXC DAC value is on allowed range
+0...+250.
Path of the transmitted signal
AMPS/DAMPS
Cobba TX I/Q DAC – I/Q–modulator – gain step amplifier – linear gain
control amplifier – IF BPF – Upconverter – TX Driver amplifier – BPF–
Power Amplifier – Directional Coupler– Duplexer –Diplexer – Antenna.
TDMA1900D
Cobba TX I/Q DAC – I/Q–modulator – gain step amplifier – linear gain
control amplifier – IF BPF –Upconverter – BPF– TX Driver amplifier –
BPF– Power Amplifier – Directional Coupler– Duplexer – Diplexer – An-
tenna.
Power detection and power control circuits are located under the power
control part of this guide.