Re: [APML] 2 More ST-4 questions

["David B. Toth" <ve3gyq@amsat.org>]

At 10:35 AM 4/26/2003 -0700, Alan Voetsch wrote:
>Hey Jim,
>
>--- Jim Ives <flyboy9990@earthlink.net> wrote:
> >  I believe it draws 2 amps.  As far as the shut down, I don't
> > think there's any set procedure.
>
>I find that strange, because it's my (limited, of course <g>)
>understanding that repeated uncontrolled shutdowns can damage the chip.
>So, I have to assume that there is some sort of built in shutdown
>procedure. I think I'll e-mail SBIG and see what they have to say about
>it. If i get any useful info in reply, I'll pass it on to the list.

Alan: there is no shutdown procedure besides turning the power off. The 
cooler is not regulated. Nothing magical happens if you leave it on for 
some time after you finish guiding. The act of guiding doesn't do anything 
special to the cooler. I've programmed the ST4 for CCDSoft and there is no 
documented control for the cooler in stand-alone use or computer-controlled 
use. The cooler is documented as being unregulated. I've had mine for 13 
years, and I just turn it off when I am done.


Dave

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