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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
Check GSM850/EGSM/DCS/PCS
output power at
①
.
Check if there is any Major difference.
Refer to Figure 4-18.
GSM850>32dBm
EGSM>32dBm
DCS>29dBm
PCS>29dBm
No
See Next page to check Tx path
Similar?
Yes
GSM850/EGSM/DCS/PCS Tx path OK.
See Chapter 4.21.6 to check Rx path
v
Agilent 8960 Setting
: GSM BCH+TCH Mode
v
Oscilloscope Setting
Figure 4-24. GSM850/EGSM/DCS/PCS Tx Level at
①
3. DCS Tx
MODE=2
SWTX=699,0,1024,1
Test Program Script
1. GSM850 Tx
MODE=3
SWTX=190,64,5,1024,1
4. PCS Tx
MODE=1
SWTX=661,0,1024,1
2. EGSM Tx
MODE=0
SWTX=49,5,1024,1