[Elecraft] K3 Power on via Aux connector?

[Rick WA6NHC]

Momentary assertion is preferred.  While leaving it asserted (grounded) 
won't cause any particular issue, it won't allow the K3 to shut down 
(haven't tested this entirely).

I use a USB controlled relay, assertion about 100ms to power on the K3, 
remotely.

Rick wa6nhc/7


On 6/7/2017 8:36 AM, Jim Miller wrote:
> Some experiments with Pin 8 (POWER ON) show that if it is asserted
> (grounded per the Owner's Manual) it turns the K3 on just fine as expected.
>
> However if it is negated the K3 remains on.
>
> The Owner's Manual says it should remain asserted (grounded) until a PS0
> command is sent before negating.
>
> Has the behavior of Pin 8 been modified in the firmware to make a momentary
> assertion sufficient?
>
> BTW, once turned on via Pin 8, and even though Pin 8 remains asserted, a
> front panel turn off via the Power button works to shut down the K3. That
> reinforces the notion the Pin 8 is really activating the K3 via the leading
> edge of the assertion only rather than the level of Pin 8.
>
> Clarification?
>
> 73
>
> jim ab3cv
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