Furuno FS-1562 - Page 361

FELCOM 82
H3-32
RF CON
DET
Tx RF Level
Tx IF
Q12
U44
56MHz
Tx Local
Tx RF
+9dBm
10
20
30
40
0 5 10 15
20dBm
TX RF LEVEL
Indcation
TX RF output level (dBm)
Reference level: 9+2dBm
- Rx C/N (40 or more)
The input signal to the SYNC DSP is picked up and sent to the SYS CPU for the
calculation of Carrier per Noise (C/N). When the receiver circuit is normal, C/N
is 40 or more.
CPU
U51
Rx IF
A/D
10.7MHz
BPSK/QPSK
Demodulator
DEMOD
DSP
SYNC
DSP
DECODE
DSP
C/N data
U49 U29(AD6620AS) U30 U34 U39
RF CON