Article View: sci.electronics
Article #20270Re: Depth Finder Problem
From: Dick King
Date: Thu, 29 Dec 1988 16:15
Date: Thu, 29 Dec 1988 16:15
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1344 bytes
In article <8812271430.AA18210@decwrl.dec.com> starin@abe.dec.com (Mark Starin KB1KJ DTN: 264-5596 MK01-1/A10) writes: >I am posting this for a friend at DEC. > >The depthfinder on his sailboat works fine when he's under sail. >However, as soon as he lights off the "iron main", the depthfinder >indicator starts giving messed up indications. > >The depthfinder is located 3-4 feet from the engine and is >apparently well grounded. According to him, it is connected directly >to the battery - not to the alternator system. > >Any assistance would be appreciated. The problem is probably the engine's noise rather than any electrical problem. A depth finder is, i believe, a sonar device. Is it possible to lower the transducer into the water on a string to test whether this is the case? If so, the transducer should probably be moved to somewhere far from the engine. -dk
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arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!bu-cs!purdue!decwrl!labrea!kestrel!kingReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!bu-cs!purdue!decwrl!labrea!kestrel!king From: king@kestrel.ARPA (Dick King) Newsgroups: sci.electronics Subject: Re: Depth Finder Problem Message-ID: <46387@kestrel.ARPA> Date: 29 Dec 88 16:15:59 GMT References: <8812271430.AA18210@decwrl.dec.com> Reply-To: king@kestrel.UUCP (Dick King) Organization: Kestrel Institute, Palo Alto, CA Lines: 22