User Guide

NPM-2NX
Troubleshooting CCS Technical Documentation
Page 28 ãNokia Corporation Issue 1 07/02
Path of the received signal
Block level description of the receiver:
Duplex filter
1900 MHz
Duplex filter
850 MHz
Diplex filter
850 / 1900
LNA
1900
LNA
850
Band
filter
Band
filter
1
st
mixer
1
st
mixer
GS
M
ch filter
TDMA
ch filter
AGC
AGC
2
nd
mixer
2
nd
mixer
Buffer Buffer
BB filter
BB filter
AGC
AGC
Q I
Q
I
Receiver Block Diagram
SAFARI GTE
UHF
LO
VHF
LO
1930 ... 1990 MHz 869 ... 894 MHz
133.2 MHz
BW
200 kHz
134.04 MHz
BW
30 kHz
2063 ... 2124 MHz
1003...1029MHz
(VCO / 2)
133.2 MHz (VCO / 2)
AGC 1...31 dB, 5 steps
AGC -6...36 dB, 7 steps, TDMA
AGC
-
6...30 dB, 5 steps, GSM
AGC 25/20 dB 1 step
134.04 MHz (VCO / 2)