... Presumably PPS
was ignored because the event based timing packets yield reliable
sub-millisecond offsets. The driver and document should be brought into
the PPS era and be renamed the TSIP refclock rather than Palisades.
Palisades/NMEA + ATOM is the way to use these receivers.
From the
George Ross g...@inf.ed.ac.uk wrote:
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On Tue, Jan 20, 2015 at 6:51 AM, George Ross g...@inf.ed.ac.uk wrote:
From the Acutime 2000 user guide: The time tag provides a resolution of
320ns Is PPS going to be sufficiently better that it would outweigh
the additional setup complexity?
No.
It is not the resolution of the time tag that matters, but the accuracy
at which it can be received by an asynchronous serial port.
Ah, no, the timeousness of reading the timestamp isn't relevant, provided
only that the driver doesn't hammer on the clock unit too hard (which it
doesn't; once a
On 2015-01-20, George Ross g...@inf.ed.ac.uk wrote:
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William Unruh un...@invalid.ca wrote:
On 2015-01-20, George Ross g...@inf.ed.ac.uk wrote:
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On 2015-01-20, Rob nom...@example.com wrote:
William Unruh un...@invalid.ca wrote:
On 2015-01-20, George Ross g...@inf.ed.ac.uk wrote:
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George Ross g...@inf.ed.ac.uk wrote:
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William Unruh wrote:
On 2015-01-20, Rob nom...@example.com wrote:
It turns out that the device has a mode where you can SEND a pulse at
a moment you decide and then the device RETURNS the timestamp of that
pulse you sent in a serial message.
Presumably you can take a nanosecond timestamp and
On Tue, Jan 20, 2015 at 1:45 PM, William Unruh un...@invalid.ca wrote:
You would presumeably want a daemon to read the clock and toggle the pin,
perhaps with interrupts turned off
That would be NTPd refclock 29 mode N where N select an event stamping
receiver. Naturally doing this in user
Shouldn't it show a 'o' rather than a '*' when it is locked to PPS
in kernel mode?
Ah, but it's not doing PPS. The driver waggles one of the control lines
and the device transmits a timestamp in response.
--
George D M Ross MSc PhD CEng MBCS CITP, University of Edinburgh,
School of
George Ross g...@inf.ed.ac.uk wrote:
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On Mon, Jan 19, 2015 at 2:57 AM, George Ross g...@inf.ed.ac.uk wrote:
Is there anyone with the prior experience in getting these older
Trimble units to work?
We've had a Trimble Acutime 2000 running since 2005, at two separate sites.
Although the Palisades driver has been extended to the
George Ross g...@inf.ed.ac.uk wrote:
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Is there anyone with the prior experience in getting these older
Trimble units to work?
We've had a Trimble Acutime 2000 running since 2005, at two separate sites.
As I recall we just plugged it in, ran the (Windows) configuration tool that
came on the CD with it to check that it had a lock
Oceanos Admin sysad...@cellmail.com wrote:
Is there anyone with the prior experience in getting these older Trimble
units
to work? Most of the information dates back to the early 2000's or so.
Our desire is to get away from using an external Internet based public NTP
site
to limit
Hi:
We were looking to use an older Trimble Thunderbolt 8 channel GPS receiver for
providing a Stratum 1 time reference. I realize this is discussed on the ntp.org
web site but sadly, the link to Trimble to get the driver (any any ntp driver)
are now all dead links.
We have it connected to
On Fri, Jan 16, 2015 at 7:49 PM, Oceanos Admin sysad...@cellmail.com
wrote:
Hi:
We were looking to use an older Trimble Thunderbolt 8 channel GPS receiver
for providing a Stratum 1 time reference
The standard hobbyist T-Bolt management program is Lady Heather. It a
windows (dos) program
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