On Nov 24, 2011, at 9:25 AM, Charles P. Steinmetz wrote:
> I did a little investigating, and it turns out that the TOD displayed in the 
> BTMon windows is the local system time, NOT time received from the TS2700.  
> Apparently, the TS2700 does not send TOD on the Craft output.

Hi Charles,

When I first used BTMon, I wondered if that was the case.
However, reading more about the TL1 messages from the Craft
output, there are messages for date and time:

date: 
This parameter is the current date in the 8-digit form yyyy-mm-dd, where yyyy 
is year, mm is month (01–12), and dd is day (01–31).

time:
This parameter is the current time in the 6-digit form hh-mm-ss where hh is 
hours (0–23), mm is minutes (0–59), and ss is seconds (0–59). The factory 
setting is GMT for local time.

Assuming your investigation is connect, then system time is used in BTMon 
windows, but it's also
documented to be present on the Craft output.

For my next investigation, I need to read a bit on RS-422/485 pinouts on a DE-9 
connector. I think
I have a Maxim sample RS-485 transceiver I can use to look at data on the TOD 
output.
Also, once I know the pinout, I'll know where ground is and can look for a PPS 
on one of the other
pins.

If I don't get far there, then I was thinking about looking at the 2 Hz test 
point and seeing if
that's synchronized to a GPS PPS signal.

Thanks for information!

Kevin


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