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Date: Thu, 10 May 2007 17:03:08 -0600
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: EC2 question
Message-Id: <20070510170308.735e0a15.rlwhite@comcast.net>
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On Thu, 10 May 2007 14:39:57 -0800
"Al Gietzen" <ALVentures@cox.net> wrote:

> On Thu, 10 May 2007 09:31:30 -0800
> "Al Gietzen" <ALVentures@cox.net> wrote:
> 
> 
> > 
> > BTW; preliminary results indicate that the issue I've had with the
> > spontaneous changes of settings has been resolved.
>   
> > Al
> > 
> <snip>
> 
> What was causing it?
> 
> Bob W.
> --------------------
> 
> Don't know exactly.  Added additional filtering on the circuit board :
> 
> 1000pf capacitors were added to:
> 
> All fuel injector signals
> All ignition control signals
> RX input
> TX output
> 
> 47uf, 16V tantalum were added to each processor
> 
> Pin 8 of connector is now grounded.
> Pin 28 of connector is now grounded.
> 
> Al
> 

Thanks Al,

I was wondering if it had anything to do with how the cables were
routed, or their length.  I guess that's indeterminate but the noise
was getting in there from somewhere.  I hope you really have it fixed
as those kinds of problems are a real pain.  I was having an issue with
noise on my EM2 display and that went away with some extra filters that
Tracy suggested.  I don't really know why my unit was more sensitive
than most either.

Bob W.

-- 
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