Kongsberg EM 712 Maintenance Manual page 97

One Receiver Unit
All switches must be set to OFF. OFF is when they are
pushed up.
Two Receiver Units
Receiver Unit 1: all switches must be set to OFF.
A
OFF is when they are pushed up.
Receiver Unit 1 is connected to RX transducer 1.
Receiver Unit 2: switch 1, 2 and 3 must be set to
B
OFF, switch 4 must be set to ON.
Receiver Unit 2 is connected to RX transducer 2.
451106/B
Receiver Unit
97