Empathy List Archives

D

Don@True-Cal

Wed, Dec 7, 2016 5:50 PM

I'm using the latest version of LH connected to two Thunderbolts. Whenever I
do a precision 48-hour antenna survey, I'm confused on if the derived best
coordinates are automatically loaded into the Lat & Lon registers when it
completes. What is the procedure at the completion of the precision survey
or is it completely automatic?

Thanks,

Don

I'm using the latest version of LH connected to two Thunderbolts. Whenever I do a precision 48-hour antenna survey, I'm confused on if the derived best coordinates are automatically loaded into the Lat & Lon registers when it completes. What is the procedure at the completion of the precision survey or is it completely automatic? Thanks, Don

DC

David C. Partridge

Wed, Dec 7, 2016 6:51 PM

I'm confused here, LH can be connected to only one TB at any one time (depending on command line options).

But in any case at the end of the LH 48 hr survey, the survey location will be stored into the currently connected TB. If both TBs are connected to the same antenna, I think you'll need manually to set the location of the second one (lat./long./altitude) based on the survey results stored in the other one.

Dave

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Don@True-Cal
Sent: 07 December 2016 17:50
To: Time Nuts Group
Subject: [time-nuts] Question on LH

I'm using the latest version of LH connected to two Thunderbolts. Whenever I do a precision 48-hour antenna survey, I'm confused on if the derived best coordinates are automatically loaded into the Lat & Lon registers when it completes. What is the procedure at the completion of the precision survey or is it completely automatic?

Thanks,

Don

time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

I'm confused here, LH can be connected to only one TB at any one time (depending on command line options). But in any case at the end of the LH 48 hr survey, the survey location will be stored into the currently connected TB. If both TBs are connected to the same antenna, I think you'll need manually to set the location of the second one (lat./long./altitude) based on the survey results stored in the other one. Dave -----Original Message----- From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Don@True-Cal Sent: 07 December 2016 17:50 To: Time Nuts Group Subject: [time-nuts] Question on LH I'm using the latest version of LH connected to two Thunderbolts. Whenever I do a precision 48-hour antenna survey, I'm confused on if the derived best coordinates are automatically loaded into the Lat & Lon registers when it completes. What is the procedure at the completion of the precision survey or is it completely automatic? Thanks, Don _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

CC

Chris Caudle

Wed, Dec 7, 2016 7:54 PM

On Wed, December 7, 2016 12:51 pm, David C. Partridge wrote:

But in any case at the end of the LH 48 hr survey, the survey location
will be stored into the currently connected TB. If both TBs are connected
to the same antenna, I think you'll need manually to set the location of
the second one (lat./long./altitude) based on the survey results stored in
the other one.

Mark has explained previously on the list, but it is actually kind of
convoluted. The command to set the position does not accept enough
numeric precision to accurately set the position which was determined from
long term averaging, so LH causes the Thunderbolt to run short self
surveys (which report the position to more numeric digits than the set
command will allow you to set), and compares the reported position to the
position derived from the long term average. When one of the self survey
results just happens to be within some small error of the determined
position, then that self survey result is saved.

So if you manually set the position on a second Thunderbolt, the software
will chop off the lower order digits of the number you give, and the two
thunderbolts could have very slightly different performance, even running
from the same antenna.

--
Chris Caudle

On Wed, December 7, 2016 12:51 pm, David C. Partridge wrote: > But in any case at the end of the LH 48 hr survey, the survey location > will be stored into the currently connected TB. If both TBs are connected > to the same antenna, I think you'll need manually to set the location of > the second one (lat./long./altitude) based on the survey results stored in > the other one. Mark has explained previously on the list, but it is actually kind of convoluted. The command to set the position does not accept enough numeric precision to accurately set the position which was determined from long term averaging, so LH causes the Thunderbolt to run short self surveys (which report the position to more numeric digits than the set command will allow you to set), and compares the reported position to the position derived from the long term average. When one of the self survey results just happens to be within some small error of the determined position, then that self survey result is saved. So if you manually set the position on a second Thunderbolt, the software will chop off the lower order digits of the number you give, and the two thunderbolts could have very slightly different performance, even running from the same antenna. -- Chris Caudle

DC

David C. Partridge

Wed, Dec 7, 2016 8:02 PM

So need to do two long surveys then - what a pain ...

Oh well
Dave

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Chris Caudle
Sent: 07 December 2016 19:54
To: time-nuts@febo.com
Subject: Re: [time-nuts] Question on LH

On Wed, December 7, 2016 12:51 pm, David C. Partridge wrote:

But in any case at the end of the LH 48 hr survey, the survey location
will be stored into the currently connected TB. If both TBs are
connected to the same antenna, I think you'll need manually to set the
location of the second one (lat./long./altitude) based on the survey
results stored in the other one.

Mark has explained previously on the list, but it is actually kind of convoluted. The command to set the position does not accept enough numeric precision to accurately set the position which was determined from long term averaging, so LH causes the Thunderbolt to run short self surveys (which report the position to more numeric digits than the set command will allow you to set), and compares the reported position to the position derived from the long term average. When one of the self survey results just happens to be within some small error of the determined position, then that self survey result is saved.

So if you manually set the position on a second Thunderbolt, the software will chop off the lower order digits of the number you give, and the two thunderbolts could have very slightly different performance, even running from the same antenna.

--
Chris Caudle

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

So need to do two long surveys then - what a pain ... Oh well Dave -----Original Message----- From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Chris Caudle Sent: 07 December 2016 19:54 To: time-nuts@febo.com Subject: Re: [time-nuts] Question on LH On Wed, December 7, 2016 12:51 pm, David C. Partridge wrote: > But in any case at the end of the LH 48 hr survey, the survey location > will be stored into the currently connected TB. If both TBs are > connected to the same antenna, I think you'll need manually to set the > location of the second one (lat./long./altitude) based on the survey > results stored in the other one. Mark has explained previously on the list, but it is actually kind of convoluted. The command to set the position does not accept enough numeric precision to accurately set the position which was determined from long term averaging, so LH causes the Thunderbolt to run short self surveys (which report the position to more numeric digits than the set command will allow you to set), and compares the reported position to the position derived from the long term average. When one of the self survey results just happens to be within some small error of the determined position, then that self survey result is saved. So if you manually set the position on a second Thunderbolt, the software will chop off the lower order digits of the number you give, and the two thunderbolts could have very slightly different performance, even running from the same antenna. -- Chris Caudle _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

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Question on LH