Gsm Rx Chain Activation For Manual Measurements/Gsm Rssi Measurement - Nokia n81 Service Manual

RM-179; RM-223
RF troubleshooting

GSM RX chain activation for manual measurements/GSM RSSI measurement

Prerequisites
Make the following settings in Phoenix service software:
Setting
Phoenix Channel
Signal generator
to antenna
connector
Steps
1. Set the phone to local mode.
2. Activate RSSI reading in Phoenix (Testing→GSM→RSSI reading )
Results
The reading should reflect the level of the signal generator (-losses) +/- 5 dB.
When varying the level in the range -30 to -102 dBm the reading should then follow within +/-5 dB.
Issue 1
GSM850
190
881.66771MHz
(67.71kHz offset)
at -60dBm
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Copyright © 2007 Nokia. All rights reserved.
GSM900
37
942.46771MHz
(67.71kHz offset)
at -60dBm
GSM1800
700
1842.86771MHz
(67.71kHz offset)
at -60dBm
GSM1900
661
1960.06771MHz
(67.71kHz offset)
at -60dBm
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