Furuno ETR-30N Operator's Manual page 22

Transducer
Route the transducer cable well away from power cables, televisions and CRTs to prevent
interference to the network sounder. Attach the NCS connector to the transducer cable as
below and connect it to the appropriate TRANSDUCER connector on the front of the
network sounder.
Note: For dual-frequency transducer, use the optional cable assy. NCS255AD-254P-L500.
Ground
To prevent interference to the picture and radio equipment, connect a ground wire (KIV 2.0
sq, black) between the ground terminal and ship's grounding bus. The length of the wire
should be as short as possible.
To obtain a good ground on an FRP vessel, a 20
the outside of the ship's hull. Connect the ground wire to the copper plate.
Note: Use a "closed-type" lug (
not use an "open-type" lug (
Shield
Cable Clamp
NCS Connector
NCS-254-P
How to attach connector to transducer cable
) to make the connection at the network sounder. Do
).
CAUTION
Ground the equipment to
prevent mutual interference.
4
Shield Foam 71TS-10-1
Cable
30 cm copper plate can be welded on