Simrad ES120-7C - REV D, Installation Manual, Page: 48 / 98

46
330254/B
ES120-7C Connecting to a 12-pin Amphenol
socket
The Simrad ES120-7C is a split beam composite transducer designed for fishery and
underwater science applications. The transducer shall be connected to terminals
A
through
N
on a circular 12-pin Amphenol socket (Type 97-12-19S). This socket is used on the General
Purpose Transceiver (GPT), and on several versions of the Wide Band Transceiver (WBT).
The other end of the cable is permanently fixed to the
transducer.
The transducer is designed with the individual elements
organized in four separate sectors. It is very important
that the transducer is correctly installed with the sectors
positioned as shown in the illustration (seen from above).
Each sector is connected to a dedicated transceiver channel. In this context, the phrase
transceiver channel is used to describe one single pathway through the transceiver. This
pathway contains one transmitter, one preamplifier and the necessary transmit/receive
switching circuitry.
Depending on production date, the transducer can be delivered with two different cable
types. One cable type uses black and white conductors, while the other uses colour coded
conductors.
Cable with colour coded conductors
Sector Cable colours Terminal on socket Transceiver channel
White H 1
Black J
1
Green
E
2
Black F
2
Simrad ES120-7C Installation Manual