4.5 Jumper Setting of Terminal Board
4-40
4.5.1 Jumper of AIS port: [J655]
This port complies with IEC-61162-2 (38.4 kbps/RS-422).
This is the setting on whether to add terminator 100 ohm (330 ohm x 3) between AIS
RD-A and RD-B or not.
When multiple devices such as ECDIS and radar are connected to one TD-A/B port of
the AIS unit, install a terminator on a device that has the longest wiring among these
devices. This setting is intended to meet the specifications for the single-talker and
multi-listener stipulated in IEC61162-2.
Table 4.5.1 Setting of [J655]
AIS TD-A/B line Jumper plug
J655
Multiple connection Single connection
Factory setting
1 AIS RD-A Open
2 AIS RD-B
Jumper between 1 and 2
(With terminator)
Jumper
between 1 and 2
(With terminator)
3 N.C
Jumper between 2 and 3
(Without terminator)
Open Open
Fig. 4.5.3 Location of the Terminator
4.5.2 Jumper of HDG Sensor Prot: [J656]
This port is a type in compliance with IEC-61162-2. (38.4 kbps/RS-422)
This is the setting on whether to add terminator 100 ohm (330 ohm x 3) between HDG
RD-A and RD-B or not.
The setting is the same as for the AIS port mentioned above. So read the description
given above by replacing AIS with HDG.
Table 4.5.2 Setting of [J656]
HDG TD-A/B line Jumper plug
J656
Multiple connection Single connection
Factory setting
1 HDG-A side Open
2 HDG-B side
Jumper between 1 and 2
(With terminator)
Jumper
between 1 and 2
(With erminator)
3 N.C
Jumper between 2 and 3
(Without terminator))
Open Open
- AIS
- HDG SENSOR
TD
FARFAR
Terminator
Not used
Terminator
Used
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