Injector Duty Cycle

[Dave Zug.]

AAH! I understand ken, insted of measuring the extremes, force them to a
known value. thanks for the details!

----- Original Message -----
From: Ken Kelly <PCMdoc at surfree.com>
To: <gmecm at diy-efi.org>
Sent: Friday, June 02, 2000 6:42 AM
Subject: Re: Injector Duty Cycle


> Dave,
> To use a multimeter as you suggest you need to clamp the voltage first.
> The Voltage in the car varies from 11 to 16 volts. This means you need
> to use a resistor and zener diode to clamp the voltage at a lower
> voltage, then avarage the voltage to get the dwell. This is exactly what
> a dwell meter does, and that is why I suggested a dwell meter.
>
> Ken
>
>
> Dave Zug wrote:
> >
> > Using a DMM and taking a DCV reading and reverse calculating based on
RMS?
> > you'll have to know the upper and lower voltages, AND hold the injectors
to
> > a steady state to even be close, OR have the ability to record the DCV.
I
> > guess you "can".
> >
> > oh well, my 0.02
> >
> > If you use a multimeter that is a scopemeter you can ;-)
> >
> > ----- Original Message -----
> > From: trax <trax at frederickmd.com>
> > To: Gmecm at Diy-Efi. Org <gmecm at diy-efi.org>
> > Sent: Thursday, June 01, 2000 10:59 AM
> > Subject: Injector Duty Cycle
> >
> > > I've heard that you can use a MultiMeter to measure the Injector Duty
> > Cycle.
> > > Can someone explain how to do this ... i.e. what settings on the
> > MultiMeter
> > > and where to stick the probes.
> > >
> > > Tim
> > >
> >
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