Re: Where do I get a POWER OK for Widget?

I didn't connect that line on the widget I have in an external enclosure and it works fine.

I've only used it with BLU and Xenix, so there might be a status that the Office System looks at but Xenix ignores.

On Wed, Mar 28, 2018 at 6:49 PM James MacPhail <gg__at_email.domain.hidden> wrote:

>
> As far as I can tell:
>
> The DataPower power supply does have a "Power OK" signal on pin 21
> (Labeled "/Power Fail" on the schematic.)
>
> You measure +5 on the pin when the Widget is attached because it is
> pulled up to +5 by R1 on the Widget.
>
> You measure 0V on the pin when the Widget is not attached because it
> is not driven by the power supply (it is an open collector output
> that can only sink current).
>
> This signal doesn't go to the motherboard.
>
> I suppose the simplest approach is to leave the pin unconnected and
> the Widget will pull it high.
>
> HTH,
>
> James
>
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