Nokia NEM-4 Series Troubleshooting Instructions page 69

CCS Technical Documentation
Press ok and the window closes.
Read the SNR result. SNR should be: EGM900 >20dB
Measuring frontend power levels using Spectrum analyzer
Spectrum Analyzer (SA) level values depend on the probe type and should be vali-
dated using a good sample.
The levels that are given here are measured using a resistive probe (50Ohm semi-rigid
cable).
Start Phoenix Service Software
Open the FBUS connection
Select
Wait until phone information shows in the lower right corner of the screen.
Set operating mode to local mode
Select
Wait until the RF Controls window pops up
Select
Please refer to the fault finding chart for proper levels at different test points.
Measuring analogue RX I/Q signal voltages using Oscilloscope
Measuring with an oscilloscope on "RXIINN" or "RXQINN" is recommended only if RSSI
reading does not provide enough information. Use testpoints J606-J609. Input level = -
80dBm
Start Phoenix Service Software
Select
Wait until phone information shows in the lower right corner of the screen.
Set operating mode to local mode
Issue 1 09/2003
Company Confidential
Scan Product
Testing
RF Controls
Band
Active unit
Operation mode
RX/TX Channel
Scan Product
Copyright  2003 Nokia Corporation
Company Confidential
GSM1800 >18dB
GSM1900 >18dB
Ctrl-R
alt-S
S
GSM 900 or GMS1800 or GSM1900
RX
Continuous
37 or 700 or 661
Ctrl-R
NEM-4
RF Troubleshooting
Page 6(b)-65