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" <[email protected]> To: "Discussion of precise time and frequency measurement" <[email protected]> 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 > > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
