Furuno CH-37 - Manual (Page 34)

2-4
2.2 Synchronizing Transmission with Echo Sounder
or Other Sonar
To synchronize transmission of the CH-37 with an echo sounder or other type of
sonar, connect it as shown below.
Connections for synchronizing Tx with other E/S, sonar
DISPLAY UNIT
J3
06P0228
KP1 > 3 >
EXT SW > 5 >
GND > 8 >
E/S, SONAR
KP OUT
+5 V to 15 V
GND
CH-37 accepts a positive
KP with amplitude of 5 V
to 15 V.
Make a hole for cable entry at the left side of the rear panel.
Figure 2-3 Connection of display unit to other sonar
J3
MAIN Board
06P0227
FRONT REAR
SNR Board
06P0228
Figure 2-4 Display unit, cover removed, right side view