[time-nuts] Thunderbolt Serial Port Shutdown
Tom Van Baak
tvb at LeapSecond.com
Sun Mar 20 16:01:39 EDT 2016
Dave,
Make sure your -12 volt supply is valid. It's used by the UART. Anything from -7 to -12 should be ok.
Here's the wiring diagram:
http://www.leapsecond.com/pages/tbolt/power.htm
/tvb
----- Original Message -----
From: "Dave Brown" <tractorb at ihug.co.nz>
To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
Sent: Saturday, March 19, 2016 11:10 PM
Subject: [time-nuts] Thunderbolt Serial Port Shutdown
> Are there any circumstances when the Thunderbolt serial port is disabled by
> firmware? My TB runs 24/7 but stopped the night before last for no apparent
> reason. I only discoverd this when I checked Lady Heather early
> yesterday.(19 March) LH had stopped with a 'no data' warning late on the
> 18th Feb. I initially restarted LH but to no avail, then powered off the
> Thunderbolt briefly-again to no avail. I then left it powered off for over
> 24 hrs and restarted it around mid-afternoon today (20 March) and now, after
> about four hours running normally, it seems like all is back to normal. Just
> running Tboltmon at present but will go back to LH later tonight.
> DaveB, NZ
>
>
>
>
>
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