ST60 Speed input voltage

[Hartley18]

I'm trying to work out a way to connect a 2-wire speed transducer to an ST60+.

Can someone with a working ST60 installation please tell me what the voltage is between the RED (Speed/+Voltage) wire and BARE (Speed/Ground) when the unit is powered on??

Thanks,
Cameron

[redline]

According to the service manual, for both the ST60 Speed and Tridata:

the Red terminal "12V_SPD Approximately 11.2V DC out".

The green SPD terminal "With transducer attached, spinning paddle-wheel produces pulses approximately 11.2V DC in amplitude @ 5.5Hz/Knot."

[Hartley18]

Originally Posted by redline

According to the service manual, for both the ST60 Speed and Tridata:

the Red terminal "12V_SPD Approximately 11.2V DC out".

The green SPD terminal "With transducer attached, spinning paddle-wheel produces pulses approximately 11.2V DC in amplitude @ 5.5Hz/Knot."

Thanks, Redline.

I'd have thought the voltage on the green would have been less than that.. but in any case, that helps a lot!!