Furuno FSV25 Installation Manual page 32

2. WIRING
How to connect external KP
To synchronize transmission with external sonar, make the connections shown below.
Current drive KP output
KP input logic switching
DIP SW S3-2
ON: Rising edge
OFF: Falling edge
Voltage drive KP output
KP input logic switching
DIP SW S3-2
ON: Rising edge
OFF: Falling edge
Make the connections shown below to output KP for external sonars and current
indicators.This sonar transmits a keying pulse (KP) to connected external sensors
when this sonar is connected and running.
2-6
IF UNIT
IF UNIT
IF UNIT
KP input logic switching
DIP SW S3-3
ON: Positive logic
OFF: Negative logic
KP signal (Current drive)
Sonar
KP signal (12 V)
Sonar
KP signal (12 V)
Sonar
Current
Indicator