Gsm1900 Tx Troubleshooting - Nokia RH-6 Series Rf Description & Troubleshooting

RH-6
7 - RF Description & Troubleshooting

GSM1900 TX troubleshooting

Setup for GSM1900 TX troubleshooting
Start the investigations as described in chapter General instructions for TX troubleshoot-
ing "General instructions for TX troubleshooting".
Set operating mode to local mode.
Select
Wait until the RF Controls window pops up
Select
The setup should now look like this:
Now the measurement equipment should measure the following output signal from the
phone.
P = +20dBm @ 1880MHz
out
If this is not the case, then go to the next chapter for fault finding.
Fault finding chart for GSM1900 transmitter
It is useful to use TXP signal as a trigger-signal. It is provided at TXP test point.
Page 26
Company Confidential
Maintenance Testing
Band
Active unit
Operation mode
RX/TX Channel
TX PA Mode
TX Power Level
TX Data Type
Copyright © 2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
RF Controls
GSM 1900
TX
Burst
661
Free
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Issue 1 10/2003