As Dick mentioned this is the most likely reason. There is another power
management setting that should be checked and disabled as well. Open the
device manager, and expand Universal Serial Bus Controllers. In there there
will entries such as Generic USB Hub, USB Root Hub and each of these will
also have power management settings. It is best to disable power management
there as well.
73 Tom
va2fsq.com
-----Original Message-----
From: Mike Murray
Sent: Wednesday, June 28, 2017 12:46 PM
To: Dick Dievendorff ; [email protected]
Subject: Re: [Elecraft] K3 - Intermittents serial disconnect problem
Dick,
Thanks for the suggestion! I've checked mine and it's set to disabled like
yours.
On to the other suggestions!
73, Mike
On Wed, Jun 28, 2017 at 11:37 AM, Dick Dievendorff <[email protected]>
wrote:
Sometimes PC USB devices can go to sleep based on lack of activity. The
detail may vary by operating system version, but my Control Panel applet
"Power Settings", Power options, advanced settings, USB settings, USB
selective suspend setting. I've disabled USB suspend.
I don't know that this is the problem you're having, but it's one
possibility.
73 de Dick, K6KR
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Mike Murray
Sent: Wednesday, June 28, 2017 08:58
To: [email protected]
Subject: [Elecraft] K3 - Intermittents serial disconnect problem
I've been experiencing a strange problem with my K3 and have been
unsuccessful in isolating the cause. At times it just loses the serial
connection to the PC and the K3 must be power cycled to restart the
connection. It happens both during active contest logging as well as when
sitting idle - the connection just stops. I've tried several logging
applications with the same results.
At first I thought it might be related to the PigKnob I have between the
serial port and K3, but running the serial cable direct resulted in the
same
problem. I've also seen the problem using a different PC with an Elecraft
serial to USB cable for the connection.
Indications are that a problem might exist in the K3, but I can't envision
why it would work flawlessly for some random period and then fail. Any
ideas for further troubleshooting? I've entertained updating to the
KIO3BUPKT KIO3B Upgrade Kit, but don't know that the extra expense would
be
worth a try.
73,
Mike - W0AG
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