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Cumulus stopped responding during severe thunderstorm
Posted: Sun 15 Jul 2012 1:14 pm
by KarlS
Hi Steve:
A severe thunderstorm had kept us awake all night, and when I finally got up this morning and checked the Cumulus console, the red error light was flashing. As the FO display looked normal, I shut down Cumulus, set the timestamp in today.ini to 01:50 hours, deleted the repetetive lines in Jul12log.txt and restarted Cumulus. Tada - all the missing data were recovered from the logger.
Is there any way you can say from the diags file what happened shortly after 01:50?
Re: Cumulus stopped responding during severe thunderstorm
Posted: Sun 15 Jul 2012 1:29 pm
by steve
The USB connection to the station was disconnected. It came briefly back but then went again:
15/07/2012 01:50:13.245 : 01:50:13 EWUSB: HidControl Device Unplug
15/07/2012 01:50:13.245 : VID = 1941 PID = 8021
15/07/2012 01:50:13.245 : Error - station unplugged - check connections
15/07/2012 01:50:13.510 : EWUSB: HidControl Device Removal
15/07/2012 01:50:13.510 : VID = 1941 PID = 8021
15/07/2012 01:50:13.510 : Error - station removed - check connections
15/07/2012 01:50:13.572 : EWUSB: HidControl Device Removal
15/07/2012 01:50:13.588 : VID = 1941 PID = 8021
15/07/2012 01:50:13.588 : Error - station removed - check connections
15/07/2012 01:50:13.588 : 01:50:13 EWUSB: HidControl Arrival
15/07/2012 01:50:13.588 : VID = 1941 PID = 8021
15/07/2012 01:50:13.650 : EWUSB: HidControl Device Removal
15/07/2012 01:50:13.650 : VID = 1941 PID = 8021
15/07/2012 01:50:13.650 : Error - station removed - check connections
15/07/2012 01:50:13.728 : EWUSB: HidControl Device Removal
15/07/2012 01:50:13.728 : VID = 1941 PID = 8021
15/07/2012 01:50:13.728 : Error - station removed - check connections
Re: Cumulus stopped responding during severe thunderstorm
Posted: Sun 15 Jul 2012 1:36 pm
by KarlS
Hi Steve:
I thought it was an USB problem. The strange thing is that the error happened in the middle of the night when nobody was up (well, except my dog
) to physically disconnect the USB. And I didn't disconnect/reconnect the cable before I restarted Cumulus. Strange - some electrical interference perhaps.
Re: Cumulus stopped responding during severe thunderstorm
Posted: Sun 15 Jul 2012 1:39 pm
by steve
KarlS wrote:some electrical interference perhaps.
Yes, quite likely; a power surge or dip, perhaps. Windows can announce that the device has been disconnected for reasons other than the cable being unplugged.
Re: Cumulus stopped responding during severe thunderstorm
Posted: Sun 15 Jul 2012 4:09 pm
by KarlS
The computer Cumulus is running on is a notebook sitting behind a heavy UPS, so I don't think it was a disturbance on the power line (but of course I can't be sure). I was thinking more in the line of an electrical interference at the poorly shielded - or most likely unshielded - USB cable.