Net-100 Board (03P9332) - Furuno FAR-2107 Series Service Manual

7.3.7 NET-100 board (03P9332)

LAN is based on 100BASE-Tx standard.
NET-100 is the interface for I/O signals of the SPU board, pictures on the radar screen,
operating signals of control unit and LAN. CU-200 also has the same NET-100 board
and card data is exchanged through the LAN.
The LAN cable between FAR-2xx7 radars, and between FAR-2xx7 and CU-200 is a
cross cable. When HUB-100 is used for the connection, either a straight cable or cross
cable can be used. All the ports of HUB-100 are provided with Auto-MDIX feature and
automatically recognize cable types.
SPU p.c.b
No.1 FAR-2xx7
SPU p.c.b
No.x FAR-2xx7
SPU p.c.b
LAN
NET-100
cross cable
No.x FAR-xx7
straight cable
U3
J207
25MHz
ADD. / DATA
Fig. 7.3.28 Block diagram of NET-100
LAN
100Base-Tx
NET-100
cross cable
LAN
100Base-Tx
NET-100
cross cable
8 ports
LAN
100Base-Tx
HUB-100
or
Fig. 7.3.29 Schematic diagram of LAN
CR2
CR1
(DATA)
(LINK)
Tx data
U1
LAN
Rx data
LAN I/F
U2
EEPROM
SPU p.c.b
LAN
NET-100
No.2 FAR-2xx7
CARD CPUp.c.b
LAN
NET-100
CU-200
LAN
100Base-Tx
100Base-Tx
cross cable
or
straight cable
LAN
7-70
7.3 Processor Unit: RPU-013
J302
1. Tx P
2. Tx N
3. Rx P
6. Rx N
LAN
INS
SPU p.c.b
NET-100
No.x FAR-2xx7
CARD CPUp.c.b
NET-100
CU-200