[time-nuts] No sat positions in LH with Trimble NTBW50AA? SOLVED!

Peter Reilley preilley_454 at comcast.net
Fri Jan 6 21:02:04 EST 2017

Originally I set the BAUD rate to 19200 with 7 bits and ODD parity 
because that
is what the manual said.   I confirmed these settings using an 
oscilloscope.   With
that, LH mostly worked.

After some of the suggestions here I tried this;
"C:\Program Files (x86)\Heather\heather.exe" /3 /br=9600:8::1 /rxt /gb 
/tz=-5EST/-4DST /vx
This worked perfectly.

It is the BAUD rate that threw me.   I have a lot of experience with 
ASYNC going back to the days
of the ASR33 and ASR35.   I know that some systems were auto-BAUD but 
the manual does not
mention that, I assumed that it was fixed at 19200 which actually did work.

One curious thing that I noticed; previously the clocks differed by 
about 18 seconds between my Resolution T
and my NTBW50AA.   The NTBW50AA agreed with my Win10 machine setup as 
Microsoft installed it.
With the NTBW50AA in Thunderbolt mode, the Res T and the NTBW50AA both 
agree.   Now, only Win10 is
out by about 18 seconds.

Anyway, thanks for all the help,

On 1/5/2017 12:41 PM, Mark Sims wrote:
> The Nortel devices can talk either as a Thunderbolt or as a SCPI device.  Use it as a Thunderbolt (/rxt).   In SCPI mode the satellite positions are polled for once a minute (at xx:xx:33).  Thunderbolt mode provides much more and better control of the receiver.
> ---------------
>>   I just got my Trimble NTBW50AA GPSDO up and running with Lady Heather 5.0.
> However I don't see any satellite data as I do with my Resolution T.   I
> am using
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