Be careful with simulating the pulse aplitude. Are you
assuming that it is MOS or CMOS or TTL? Just because
it is 12VDC ccapable doesn't mean it hasn't been
reduced to ttl values. And why would anyone ever sell
a VMAX?
Guedo
--- Eric Harnish <[EMAIL PROTECTED]> wrote:
> Rich,
> There are fed laws pertaining to this . When I was
> working in the
> dealers at first we would set the odometers to the
> current milage . Then
> they said we couldn't do it and the speedos were set
> before they were
> shiped to us . Finally they were shiped with 0000000
> and a form was
> filled out stating the old milage reading and the
> national computer
> networks were updated with the info .
> As far as being able to set the odometer to the
> correct milage I would
> do it if I could . When a bike or car is sold an
> odometer statement is
> filled out and I think this would cover it . If you
> could build a
> circuit that could do this I would use it .
> What I do know about the SPA unit is the speedo gets
> it's signal from a
> hall sensor that produces a digital or square wave
> signal . It's bases
> is the rolling circumfrence of the tire . You can go
> as high as a 4.999
> meters or 16.4 ft per passing of the magnet .
> I do own an Audio Generator that will produce a
> square wave pattern up
> to 200K @ 0-100 mil. amp.
> Now I'm only a tinker when it comes to electronics
> .My expertise is
> with tube amp circuits . So if you could help me out
> I would appreciate
> it .
> My thoughts are if I could capture the sensor
> reading on my scope and
> duplicate it with my generator and if the SPA unit
> will take 200k then I
> would be able to set the miles at 600 + per min . I
> know that this
> would be the maximun but may work . What do you
> think ?
> Eric H.
> ----- Original Message -----
> From: "RICH BETZ" <[EMAIL PROTECTED]>
> Subject: SPA SPEEDO SETUP
>
>
> > has anyone asked the guys at SPA-DESIGN if they
> could preload
> > your odometer with your current mileage before
> they ship the
> > unit??? I am an electronics tech by trade and I
> KNOW IT CAN BE
> > DONE ...............
>
>
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