[Elecraft] K3 Power on via Aux connector?

[Jim Miller]

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