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Course Computers and Smart Heading System
11-30-16, 03:56 PM
Post: #21
RE: Course Computers and Smart Heading System
After I connect the SHS I am unable to get GPS signal. Without the SHS incorporated I can get GPS lock when its connected both via NMEA and SeaTalk. When I put a multi-meter to the GPS power coming from the SHS (without the GPS attached) I get a little over 3 volts of power. When I attach the GPS and test the power it seems to drop to less than a volt.

I've verified the wiring and when I look at the menu in the MFD it shows signal both sent and received from the SHS.

Is there any tests I can do to see what the problem may be? Do I still need to run power to the GPS via switched power source even though its connected to the SHS?

Thanks in advance for your help.

Thanks!
Paul

US Army (Retired), Federal Way, WA

1990 Bayliner 3288 - the "Janna Lea"
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11-30-16, 04:20 PM
Post: #22
RE: Course Computers and Smart Heading System
Paul,

Should the SHS's power terminals be interfaced to a switched 12VDC power source, then it will supply power to the SeaTalk bus. Accordingly, if interfacing the SHS to the a SeaTalk bus, then the bus should not be powered from another power circuit.
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