SRT AIS, Installation And Operation Manual

Page: 78 / 92

Junction Box Accessory
Page 76
7.3 Connecting External Equipment
Figure 32 shows an example of how external equipment could be connected
through the junction box accessory.
Figure 32 Connecting the External Equipment
When connecting external equipment the following procedures should be ob-
served.
• The common line should be connected to the sensor port if one is avail-
able.
• The shield in the cable used to connect the external equipment should be
connected at one end only, Refer to the manufacturers documentation
regarding cable construction.
• The chassis connection can be made with EITHER a drain wire OR
directly to the cable shield using exposed wire links on the junction box
printed circuit board, depending on the cable construction.
COM
Rx A
Rx B
COM
Rx A
Rx B
Tx A
Tx B
COM
Shield
Tx A
Tx B
Rx A
Rx B
COM
Shield
Tx A
Tx B
Chassis
Chassis
Sensor
(eg. external GNSS)
Junction box
AIS transceiver
Chart plotter
Sensor port 3
Sensor port 2
Sensor port 1
(Orange, Purple,
Green wires)
External
display port
Pilot port
LR/DGPS port
Earth stud
connection
13
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