Navico C300D manual

[tg]

Hi.

Anyone still in posess of the manual for the Navico Corus 300 Depth unit?
Please dont hesitate to send it

I am getting an Actisense DST unit to translate the transducer signals into
NMEA, but I am confused about the wires.

There is a cable with 3 wires, which seems to be a networking interface and
there is one with 2 wires going to the transducer.
I think I will need the second one, but what are those wires there???

thanks,
gabor