[time-nuts] Thunderbolt serial port

Nic McLean mcleann at bigpond.com
Fri Feb 20 04:33:10 UTC 2009


Are you using a straight through or crossover serial cable?
Nic

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Brooke Clarke
Sent: Friday, 20 February 2009 2:35 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt serial port

Hi Brian:

There have been a small number of problems related to poor solder joints on
U9 
(RS-232 chip) or the serial connector. see:
http://www.prc68.com/I/ThunderBolt.shtml#Maint

Have Fun,

Brooke Clarke
http://www.prc68.com

bjones0 at mindspring.com wrote:
> I'm tired of banging my head against the wall so I think it is time to
> ask.. Is there a way to test if the serial port on the Thunderbolt
> works?  I know the Thunderbolt itself powers up and works (I get a
> 9.9999978 Mhz signal out of the 10Mhz output when it is on) but I have
> been unable to talk/listen to it in Windows (tboltmon or Lady Heather)
> or in Linux (even looking at the raw serial port state).  I stuck my
> breakout box on the line but I get no lights on the Thunderbolt side.
> 
> Thanks,
> Brian
> 
> 
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