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Re: External powering issue with my SD-702

Subject: Re: External powering issue with my SD-702
From: "John Hartog" hartogj
Date: Thu Nov 29, 2007 11:17 pm ((PST))
That's what I was thinking at first. But after a bunch of fiddling
around, I realized that changing those values only changes what is
shown on the battery indicator display, but does not affect the switch
over value. SD confirmed the 9V switch over can not be changed.

John

--- In  Paul Jacobson <> wrote:
>
> After a further scan of the manual, it seems that you can change the  
> ext battery low voltage warning from the factory default of 11V to  
> 10VDC-18VDC in 0.1V increments.  It might be worth changing this to  
> 13V and seeing if this triggers a change over to the internal battery?
> 
> cheers
> Paul
> 
> On 30/11/2007, at 4:49 PM, Paul Jacobson wrote:
> 
> > Hi John,
> >
> > Your NiMH pack would have a discharged voltage of around 12V.
> > According to the 702 manual the external battery low voltage
> > threshold is 11V, so I suspect that the external pack reaches a point
> > where it cannot supply sufficient current to run the 702 before the
> > power management circuit detects low voltage and switches to the
> > internal battery.
> >
> > The solution would be to either get the factory to change the low
> > threshold point to something like 12.5 or 13V for use with the 12
> > cell pack, or to use a 10 cell instead.
> >
> > cheers
> > Paul
> >
>






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