Skip to main content
Gerry | Vanagon
Checking account...
← vanagon.com home · Continue the discussion in the forum
Subject:Re: tach
From:David Beierl
Date:Thu, 17 Oct 2002 12:50:07 -0400

At 01:24 AM 10/17/2002, Leon Korkin wrote:
>Volks,
>I know there was some talk re signal to tach in the past.
>Would like to get or make tach checking device just to
>quickly test tach at a set value. Anybody knows what would this signal
>be? Square vaweform? Frequency?

I'd expect the tach to be looking for a ringing pulse of fairly low duty
cycle at about 33 pulses per second per 1000 rpm.  However it might respond
fine to a square wave.

david

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"