Topics

Issue with USB interface on K3S

Alan Baker
 

Hi all.
 
I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.
 
Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.
 
Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.
 
Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.
 
My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.
 
Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.

73,

Alan. G4GNX

Mike Flowers
 

Hi Alan,

 

First thing to check is to see if you have Power Management disabled for the USB port in question.

 

https://pattersonsupport.custhelp.com/app/answers/detail/a_id/14917/~/disable-power-management-on-windows-7-machines

 

 

- 73 and good DX de Mike, K6MKF, NCDXC Secretary

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Alan Baker
Sent: Friday, February 28, 2020 14:57
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] Issue with USB interface on K3S

 

Hi all.

 

I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.

 

Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.

 

Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.

 

Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.

 

My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.

 

Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.


73,

Alan. G4GNX

Alan Baker
 

Hi Mike.
 
Thanks for your reply.
 
Yes, power management is disabled for port 13/K3S USB. Sorry, I forgot to mention that I’d done that when the issue first appeared.
 
I have also read somewhere that some devices don’t support port 13, but I’m sure that the K3S is not one of them. I do wonder whether it might be useful to re-number the port, just in case?

73,

Alan. G4GNX

 

From: Mike Flowers
Sent: Friday, February 28, 2020 11:01 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Issue with USB interface on K3S
 

Hi Alan,

 

First thing to check is to see if you have Power Management disabled for the USB port in question.

 

https://pattersonsupport.custhelp.com/app/answers/detail/a_id/14917/~/disable-power-management-on-windows-7-machines

 

 

- 73 and good DX de Mike, K6MKF, NCDXC Secretary

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Alan Baker
Sent: Friday, February 28, 2020 14:57
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] Issue with USB interface on K3S

 

Hi all.

 

I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.

 

Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.

 

Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.

 

Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.

 

My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.

 

Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.


73,

Alan. G4GNX

Mike Flowers
 

Worth a try.  Also, Ann email to elecraft support is in order, just to see if they have insights. 

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Feb 28, 2020, at 3:11 PM, Alan Baker <g4gnx@...> wrote:


Hi Mike.
 
Thanks for your reply.
 
Yes, power management is disabled for port 13/K3S USB. Sorry, I forgot to mention that I’d done that when the issue first appeared.
 
I have also read somewhere that some devices don’t support port 13, but I’m sure that the K3S is not one of them. I do wonder whether it might be useful to re-number the port, just in case?

73,

Alan. G4GNX

 
From: Mike Flowers
Sent: Friday, February 28, 2020 11:01 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Issue with USB interface on K3S
 

Hi Alan,

 

First thing to check is to see if you have Power Management disabled for the USB port in question.

 

https://pattersonsupport.custhelp.com/app/answers/detail/a_id/14917/~/disable-power-management-on-windows-7-machines

 

 

- 73 and good DX de Mike, K6MKF, NCDXC Secretary

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Alan Baker
Sent: Friday, February 28, 2020 14:57
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] Issue with USB interface on K3S

 

Hi all.

 

I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.

 

Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.

 

Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.

 

Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.

 

My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.

 

Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.


73,

Alan. G4GNX

Alan Baker
 

It’s an easy ‘fix’ Mike, so I will do that.
 
I agree about the support call too. I’ll get one of to them right away.

73,

Alan. G4GNX

 

From: Mike Flowers
Sent: Friday, February 28, 2020 11:14 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Issue with USB interface on K3S
 
Worth a try.  Also, Ann email to elecraft support is in order, just to see if they have insights.

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX

Rick NK7I
 

I've seen USB fail like that under RFI conditions (so I try hard to not use it in the station).  Sometimes, a complete power down (plugs pulled) and reboot is required to bring that USB device 'back to life'.

See if you can match your use of the station, to the failure times.  Ferrite chokes might help in that case, but USB while convenient, isn't as solid as RS-232 (which is rock solid under RF).

73,
Rick NK7I


On 2/28/2020 3:14 PM, Mike Flowers wrote:
Worth a try.  Also, Ann email to elecraft support is in order, just to see if they have insights. 

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Feb 28, 2020, at 3:11 PM, Alan Baker <g4gnx@...> wrote:


Hi Mike.
 
Thanks for your reply.
 
Yes, power management is disabled for port 13/K3S USB. Sorry, I forgot to mention that I’d done that when the issue first appeared.
 
I have also read somewhere that some devices don’t support port 13, but I’m sure that the K3S is not one of them. I do wonder whether it might be useful to re-number the port, just in case?

73,

Alan. G4GNX

 
From: Mike Flowers
Sent: Friday, February 28, 2020 11:01 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] Issue with USB interface on K3S
 

Hi Alan,

 

First thing to check is to see if you have Power Management disabled for the USB port in question.

 

https://pattersonsupport.custhelp.com/app/answers/detail/a_id/14917/~/disable-power-management-on-windows-7-machines

 

 

- 73 and good DX de Mike, K6MKF, NCDXC Secretary

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Alan Baker
Sent: Friday, February 28, 2020 14:57
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] Issue with USB interface on K3S

 

Hi all.

 

I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.

 

Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.

 

Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.

 

Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.

 

My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.

 

Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.


73,

Alan. G4GNX

Dave Cole
 

Hi,
I had this issue until I cleaned up all the loose wires around the shack...

See:

https://www.nk7z.net/rfi-now-house-cleaning/

for the long version of this story...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 2/28/20 3:41 PM, Rick Bates, NK7I wrote:
I've seen USB fail like that under RFI conditions (so I try hard to not use it in the station).  Sometimes, a complete power down (plugs pulled) and reboot is required to bring that USB device 'back to life'.
See if you can match your use of the station, to the failure times. Ferrite chokes might help in that case, but USB while convenient, isn't as solid as RS-232 (which is rock solid under RF).
73,
Rick NK7I
On 2/28/2020 3:14 PM, Mike Flowers wrote:
Worth a try.  Also, Ann email to elecraft support is in order, just to see if they have insights.

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Feb 28, 2020, at 3:11 PM, Alan Baker <g4gnx@...> wrote:


Hi Mike.
Thanks for your reply.
Yes, power management is disabled for port 13/K3S USB. Sorry, I forgot to mention that I’d done that when the issue first appeared.
I have also read somewhere that some devices don’t support port 13, but I’m sure that the K3S is not one of them. I do wonder whether it might be useful to re-number the port, just in case?

73,

Alan. G4GNX

*From:* Mike Flowers
*Sent:* Friday, February 28, 2020 11:01 PM
*To:* Elecraft-K3@groups.io
*Subject:* Re: [Elecraft-K3] Issue with USB interface on K3S

Hi Alan,

First thing to check is to see if you have Power Management disabled for the USB port in question.

https://pattersonsupport.custhelp.com/app/answers/detail/a_id/14917/~/disable-power-management-on-windows-7-machines

*- 73 and good DX de Mike, K6MKF <http://www.qrz.com/db/k6mkf/>, NCDXC <https://www.ncdxc.org/> Secretary*

*From:* Elecraft-K3@groups.io <Elecraft-K3@groups.io> *On Behalf Of *Alan Baker
*Sent:* Friday, February 28, 2020 14:57
*To:* Elecraft-K3@groups.io
*Subject:* [Elecraft-K3] Issue with USB interface on K3S

Hi all.

I’ve been using my K3S for some time with the RS232 interface selected and it’s been 100% reliable.

Recently, I decided to use the USB interface instead and all appeared to be OK for a few days, then the PC reported that the USB device was not recognised and various other Windows 7 messages indicate that the USB I/O has malfunctioned. I read up on various USB faults and downloaded and configured a new FTDi driver, in case it was corrupted.

Since then for about a week, all was well again. Then today the PC reported the same USB fault again. Using Device Manager, I can see that the PC is ‘seeing’ the USB device being connected and disconnected, but the appropriate port (13) does not show in the ports list.

Later today I restarted the PC and restarted the K3S a couple of times. I also unplugged the USB connector from the K3S and re-plugged it a couple of times. Suddenly port 13 re-appeared and the USB is working again. Whenever the port appears as it should, its properties indicate that the FTDi chip has been correctly detected.

My first instinct is that Windows (7) is playing up and has something wrongly set, but it’s also possible that the K3S’s USB connector is intermittent, or there’s something wrong with the KIO3B Digital module. I’ve tried a different USB cable, so that one’s eliminated.

Has anyone else experienced these issues? I’d prefer to go down the ‘fix Windows’ route, rather than pull the K3S apart, or order a new module.


73,

Alan. G4GNX

Nolan - KI5IO
 
Edited

Alan (G4GNX),

Not uncommon.  I've experienced the USB port all of a sudden becoming "un-seen" by my PC.  All my PC "sleep" and "hibernate" options are turned off and it still occasionally is not found.

Often after a reboot of the O/S this will happen.  Something in Windows (I'm using W-10 Pro) decides to have an attitude.  I've worked with Elecraft support and have replaced the KIO3B module twice, replaced cables and on and on.

The easiest fix (for me) is to simply unplug the USB cable at the back of my K3 (easiest for me to reach) and plug it back in and magic happens and the port appears and I'm good to go.

Can't provide a frequency of how often this happens as it is very sporadic.

Pretty sure it is a Windows 'attitude' issue.


73 - Nolan K.
KI5IO

John Canfield
 

I completely lost the USB interface and sent the K3S to Elecraft for repair. They found a fried tranny and a diode, the RS232 interface was good. They replaced the board, apparently they won't do component level repair.

Bob McGraw - K4TAX
 

This sounds more like a faulty or intermittent physical USB connector on the computer.

My laptop has 3 USB connectors.  I originally used one of the connectors a lot for my radios, thus having to switch cables when switching radios.  A lot of plugging in and unplugging.   I started having issues of various and random nature.   I change cables, changed software drivers, and finally changed to using a different physical connector on the computer.   Problem solved.

In the chase to find the issue, I did end up putting a ferrite clamp-on core on each end of the USB cable between the radio and the computer.  I used the size for RG-8/RG-213 so I could make a one turn loop through the core.  That resolved another issue was observed as infrequently and on certain bands the application {i.e. HRD, FLDIGI, WSJT-X}  would stop running.   Clearly identified as an RFI issue.    Then cleaning up, thus eliminating,  the common mode current on the 3 coax lines resolved another RFI issue.

73

Bob, K4TAX