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Old Digital Multimeters (DMMs)

I have seemingly insoluble timing issues with the rather
antiquated Solartron/Schlumberger 7150 DMM -
despite employing an instrument driver that appears
to work.

I am able to set integration times and can visually
appreciate that actual changes occur on the
instrument display. I cannot however read the
instrument at the rates stipulated for short integration
times. I am beginning to suspect a dedicated
controller would not make much difference.

Anyone solved similar or related timing issues with an
old DMM?



Thanks in advance.

Andrew
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Message 1 of 3
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Is the instrument updating (measuring) continuously on its own while
you are attempting to read it? Perhaps if you triggered the DMM from
your program and added some code to wait until it is finished
measuring before attempting to read it.

gm


"Andrew C.J.O. Wandera" wrote in message news:...
> I have seemingly insoluble timing issues with the rather
> antiquated Solartron/Schlumberger 7150 DMM -
> despite employing an instrument driver that appears
> to work.
>
> I am able to set integration times and can visually
> appreciate that actual changes occur on the
> instrument display. I cannot however read the
> instrument at the rates stipulated for short integration
> times. I am beginning to suspect a dedicat
ed
> controller would not make much difference.
>
> Anyone solved similar or related timing issues with an
> old DMM?
>
>
>
> Thanks in advance.
>
> Andrew
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Message 2 of 3
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Yes, the instrument is measuring continuously as evidenced
by the rate at which the display updates.

I haven't tried triggering the DMM programatically, but
imagine I shouldn't have to just to read it...


Andrew

greenman skrev i meldingsnyheter:1a51ebaa.0210181047.6bbde8e@posting.google.com...
> Is the instrument updating (measuring) continuously on its own while
> you are attempting to read it? Perhaps if you triggered the DMM from
> your program and added some code to wait until it is finished
> measuring before attempting to read it.
>
> gm
>
>
> "Andrew C.J.O. Wandera" wrote in message news:...
> > I have seemingly insoluble timing issues with the rather
> > antiquat
ed Solartron/Schlumberger 7150 DMM -
> > despite employing an instrument driver that appears
> > to work.
> >
> > I am able to set integration times and can visually
> > appreciate that actual changes occur on the
> > instrument display. I cannot however read the
> > instrument at the rates stipulated for short integration
> > times. I am beginning to suspect a dedicated
> > controller would not make much difference.
> >
> > Anyone solved similar or related timing issues with an
> > old DMM?
> >
> >
> >
> > Thanks in advance.
> >
> > Andrew
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Message 3 of 3
(2,802 Views)