User Guide

TME-3
Disassembly and Troubleshooting PAMS Technical Documentation
Page 24 Nokia Corporation. Issue 3 10/03
LNA gainstep checking GSM900 & GSM1800
EGSM LNA out PCN LNA out
- RF-level at antenna port e.g. –50 dBm
- RX continuous mode (local mode)
- difference between AGC –settings
"FEG on" and "FEG off"
roughly 25 dB (using 250 ohm passive RF-probe)
- RF-level at antenna port e.g. –50 dBm
- RX continuous mode (local mode)
- difference between AGC –settings
"FEG on" and "FEG off"
roughly 30 dB (using 250 ohm passive RF-probe)
LNAB_G LNAB_P
- RX continuous mode (local mode)
- 2,6 V DC voltage "FEG ON"
- 0 V DC voltage "FEG OFF"
- RX continuous mode (local mode)
- 2,7 V DC voltage "FEG ON"
- 0 V DC voltage "FEG OFF"
LNA_G LNA_P
- RX continuous mode (local mode)
- 2,7 V DC voltage "FEG ON" and "FEG OFF"
- RX continuous mode (local mode)
- 0 V DC voltage "FEG ON"
- 1.9 V DC voltage "FEG OFF"