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• Set Rx/Tx channel to 190 on GSM850, 37 on GSM900 band or 700 on GSM1800 band or 661 on GSM1900
(Defaults).
• Set Edge to “Off” (Default). (Not active in RXmode).
• Set Tx PA mode to “Free” (Default). (Not active in RXmode).
• Apply 942.46771 MHz (channel 37 + 67.710 kHz offset), 881.66771MHz (channel 190 + 67.710 kHz),
1842.86771 MHz (channel 700 + 67.710 kHz offset) or 1960.06771 MHz (channel 661 + 67.71 kHz) –
90 dBm signal to the RF-connector (remember to compensate for cable attenuation).
Figure 46 RF Controls window
GSM Rx chain activation for manual measurements / GSM RSSI measurement
Context
RSSI signal measurement is the main Rx troubleshooting measurement. The test measures the strength of
the received signal.
Steps
1. Start
Phoenix
service software.
2. Choose
Testing
→
GSM
→
RSSI Reading
.
3. Set the RF signal generator for channel fre67.771 kHz CW mode with –80 dBm signal.
Alternatively set the cellular tester downlink channel to the appropriate channel. Make sure that the tester
is set to continuous mode, not to burst mode.
RM-88
Nokia Customer Care
RF Troubleshooting and Manual Tuning Guide
Page 7 –10
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2006 Nokia. All rights reserved.
Содержание E62
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Страница 215: ...9 Schematics Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page 9 1 Copyright 2006 Nokia All rights reserved ...
Страница 232: ...RM 88 Schematics Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page 9 18 Copyright 2006 Nokia All rights reserved ...
Страница 233: ...Glossary Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page Glossary 1 Copyright 2006 Nokia All rights reserved ...