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Airmar P66 Thermistor Resistance Values

Old 10-12-2014, 05:05 PM
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Default Airmar P66 Thermistor Resistance Values

I'm connecting an Airmar P66 (Garmin pinouts) to a Garmin wire block adapter for my new 547XS. The P66 worked fine for temp readings on my old 182C. Now with the wire adapter block, there is no temp reading. I've been tracing things out and it would help if I had some idea of the resistance reading for the thermistor (let's say for 90 degrees F ... ambient here right now). The "All-in-One" transducer works fine for temp and depth, but I really want to use the existing P66 right now. (Sure would be nice for Garmin to give you the PC board wiring on the adapter block and pinouts on the transducers).
Old 10-12-2014, 08:19 PM
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Airmar specs. Google is your friend.

http://faq.airmar.com/index.php?acti...150&artlang=en

10K @ 25 deg c
Old 10-13-2014, 04:16 AM
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Thanks for the info! Guess I didn't look far enough. Guess my thermistor is working as far as the wiring adapter block. Time to call Garmin to see what's wrong.
Old 10-13-2014, 12:53 PM
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So, after verifying the correct resistance for ~~ temp, that checks out. Connected ducer plug back up with ducer disabled and temp now shows correct temp instead of "nothing". Connected ducer wire and temp is still OK. Not sure why it wouldn't show temp before, but now it does;? No other connections were touched. I'll move on and go fishing

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