NHL-10
RF Troubleshooting CCS Technical Documentation
ISSUE 2 01/2004 COMPANY CONFIDENTIAL 11
Copyright © 2003 Nokia. All Rights Reserved.
• Apply a signal with frequency of:
EGSM: 942.467MHz (channel 37 + 67.710KHz offset),
GSM1800: 1842.867MHz (channel 700 + 67.710KHz offset),
GSM1900: 1960.067MHz (channel 661 + 67.710KHz offset),
and a power level of –80dBm to the RF connector (remember to compensate for the
cable loss).
•In RSSI reading click Read now.
The resulting RSSI level should be –80dBm in each band.
Measuring RX performance using SNR measurement
Note: This measurement also provides an indication of the conducted sensitivity.
• Start Phoenix Service Software and establish a connection to the phone.
• Select File -> Scan Product Ctrl R.
• Wait until the phone software version is shown in the lower part of the screen.
• Select Testing -> RF controls.
• Select Band -> GSM900/GSM1800/GSM1900.
• Active unit -> RX.
• Operation mode -> Burst.
• RX/TX channel -> 37/700/661.
• Select Maintenance Alt-M
Testing -> T
SNR Measurement -> M
• Select Fast SNR.
• Choose the respective band (EGSM900, GSM1800, GSM1900).
• Press Measure.
• Follow the instructions for Signal generator set–up in the pop–up window.
• Press OK.
• Read the SNR result. The SNR should be: EGSM900: > 20dB
GSM1800: > 18dB
GSM1900: > 18dB
• Check the sensitivity value.
The set-up should now look as shown in the following figure. The icon also includes a pop-up
window for reference.
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