Technical Description
Man_techn_seapath320/rev.1
25
•
LAN 2, 3 and 4 at the rear
. These LANs are of high capacity (10/100/1000 Mbps)
and are of type auto crossover and auto negation. Below is the pin wiring for these
LANs connected to different network capacities:
10/1000 or 100/1000 Mbps Ethernet
1000/1000 Mbps Ethernet
Pin no.
Signal
Description
Pin no.
Signal
Description
1
TX DA-
Transceive data +
1
BI DA+
Bi-directional pair +A
2
TX DA-
Transceive data -
2
BI DA-
Bi-directional pair -A
3
RX DB+
Receive data +
3
BI DB+
Bi-directional pair +B
4
4
BI DC+
Bi-directional
pair +C
5
5
BI DC-
Bi-directional
pair -C
6
RX DB-
Receive data -
6
BI DB-
Bi-directional pair -B
7
7
BI DD+
Bi-directional
pair +D
8
8
BI DD-
Bi-directional
pair -D
Table 11 Pin layout for LAN 2, 3 and 4 Ethernet ports
To connect the Processing Unit network, use twisted pair (TP) cable with RJ-45
connectors. To comply with the IEC 60945 standard shielded (screened) cable has to be
used. Recommended cable type is CAT-5e. Category 5e cable is an enhanced version of
Category 5 that adheres to more stringent standards. It is capable of transmitting data at
speeds of up to 1000 Mbps (1 Gigabit per second). The maximum length of the cable
that can be used is 100 metres (328 ft).
2.12.3
MRU to Processing Unit cable wiring
The MRU is connected to the Processing Unit with a cable which is terminated in the
MRU junction box in one end and with a 10 pin terminal for the Processing Unit in the
other end. The MRU is then powered from the Processing Unit.
The cable wiring is as follows:
Processing
Unit/MRU
Pin no.
Signal Pair
no.
Colour
MRU
junction box
Pin no.
MRU
connector
Pin no.
3 NC
Screen
chassis
(x3
side)
10
24V_MRU
1 white
1 (x1 side)
R
1
GND
1 blue
2 (x1 side)
B
9
RX_B
2 white
3 (x1 side)
C
Содержание Seapath 320
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