Furuno FS-1562 Manual page 363

Synthesizer
- Rx SYN (OK/NG)
The local oscillator for the receiver consists of VCOs of 730 MHz and 815 MHz
bands and PLL ICs. When either PLL unlocks, the SYS CPU generates NG
signal.
RF CON
CR8
Rx UNLOCK
CR9
- Tx SYN (OK/NG)
TX local oscillator, consisting of PLL and VCO oscillates between 1682.4 MHz
to 1702.56 MHz. When the PLL unlocks, the SYS CPU generates NG signal.
Tx UNLOCK
Antenna controls
- Antenna Status (REMOTE/FAULT)
When the SYS CPU communicates with the PCU in the antenna unit normally,
REMOTE is indicated. If not, FAULT comes on. At power-up, FAULT appears
until the antenna initialization is complete.
DATA
CONT
VCO-1
U23
815M
PLL IC
band
Ref. 21.12MHz
DATA
CONT
VCO-2
U15
730M
PLL IC
band
Ref. 21.12MHz
RF CON
DATA
CONT
CR7
U30
PLL IC
Ref. 21.12MHz
H3-34
Rx RF
FL5
1525-1545MHz
1535.7
-1555.7MHz
U4,11
FL7
Rx IF
10.7MHz
1682.4
Tx IF
-1702.56MHz
56MHz+120kHz
U35
VCO
U44
Tx RF
1626.5-1646.5MHz
FELCOM 82