Stus-List Depth transducer troubleshooting

[Bill Bina - gmail via CnC-List]

I have a new Raymarine i50 depth display connected to a D800- P17 
retractable transducer.  Boat was splashed yesterday. The depth display 
reads LAST and three dashes where the depth should be displayed. 
Obviously, it is not getting the information from the transducer. 
Raymarine's technical help consists of: "buy another transducer and plug 
it in to see if you have a bad transducer or cable". Sadly, that is more 
troubleshooting information than they provide in the manual! I just 
called Raymarine tech support and talked to one of their installers. 
That was all he had for advice. I was looking for measurements I might 
take. Resistance between the three leads? Voltages? Waveforms? I have 
good test equipment and know how to use it.  The guy at Raymarine is an 
installer, not an electronics tech. Does anybody have even some basic 
values to test the transducer?

Bill Bina


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