Measuring Rx Performance Using Snr Measurement - Nokia 6600 Rf Troubleshooting And Manual Tuning Manual

NHL-10
RF Troubleshooting
• 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
• 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
• 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.
ISSUE 2 01/2004
Maintenance Alt-M
Testing -> T
SNR Measurement -> M
COMPANY CONFIDENTIAL
Copyright © 2003 Nokia. All Rights Reserved.
CCS Technical Documentation
GSM1800: > 18dB
GSM1900: > 18dB
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