connection for Topcon GR5 and Echo Sounder

connection for Topcon GR5 and Echo Sounder

Posted by aungkyaw kyaw on Sep 26, 2018 11:43 pm

Hello,
         I have Topcon GR 5 and Hi Target HD max echo sounder. But I have no idea for connection between these two.If someone have experience about it,please guide me.

regards,
Aung Kyaw