Steve Rooke wrote:
I guess the question is, what's the likely-hood of a world standard
time being adopted (sort of like Star Trek)?
I would say it's very unlikely to happen. People tend to prefer the
time in their area to match up with the day. So, having the sun come up
at 7pm wouldn't
Gretchen Baxter wrote:
Hi,
I am doing research for my employer around time synchronization.
I have found a lot of good information at http://www.usno.navy.mil
But does the EU or other European countries have a similar source?
Several universities and scientific organisations in various
[EMAIL PROTECTED] wrote:
After connecting all wires to the Trimble plug and made a check if all
voltage is correct and left the PS unit to run
on the table without load/connecting to the GPSDO, about 15min got a
big bang and the Power Supply Unit blow-up.
On my unit the PSU was not working
Clint Jeffrey - VK3CSJ wrote:
As for me now, there are a couple of interests, I'm wanting to put together a
receiver operating at 8.4GHz where the PLO is referenced (10MHz) from a OCXO
which in turn is getting it's reference from a GPS Rx with a 10KHz output,
all for the sake of increased
Michael Baker wrote:
However, after completing its self-survey it thinks
its elevation is 11.2 meters when the actual elevation
of its antenna (on my house roof) is 28.4 meters.
I've not found any GPS receiver, available to the general pubic anyway,
that correctly reports its height above
There's a discussion of the different height measurements and the errors
found when using 4 Garmin GPS receivers at
http://users.erols.com/dlwilson/gpsvert.htm
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Thomas A. Frank wrote:
Just to add a little confusion to the mix, mine is marked 5/1/03 Rev A
I wonder who will prove to have the last maked TB?
Mine has 4/26/04 Rev E, which I guess is the American notation for 26th
April 2004.
Dave
___
Jim Palfreyman wrote:
My pet hate is loose and lose.
Perhaps we could form a chapter of the ?
http://www.worldwidewords.org/articles/apostrophe.htm
Dave (G0DJA)
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
David Forbes wrote:
This is interesting. It means that I, as an American exporter selling
directly
to end customers in the EU, do NOT need to CE mark my American made products.
I have bought several items from the US for personal use, and not for
resale, I don't remember any of them
Alan Melia wrote:
Hi Tom Brilliant I hadnt thought of the fields actually affecting the
operation of the electronics! that is certainly something that might be
interesting to check. I note there lines have three phase feeds but no
neutral wire so they must use ground as the return path to any
Arnold Tibus wrote:
As long as the system is kept balanced a 3 phase energy transport
system does not need a 4th wire as the sum of all the currents in the 3 wires
(phase shift 120deg between the wires) is zero!
regards
Arnold, DK2WT
That is true Arnold, but in the UK (and in some other
Poul-Henning Kamp wrote:
The fact that the navigation message is 50Hz in the GPS signal and
the power-grid in the UK is close to 50Hz is not a good thing
in any case.
By UK law, it must be within +/- 1% of 50Hz. :-)
Dave (G0DJA)
___
time-nuts
Alan Melia wrote:
Hi Didier, thanks for that idea, yes they were all pucks all Garmin two
intended for marine use and one was a old Garmin GPSIIplus with a mag
puck. I have a Trimble Palisade that I have not got round to working on
yet, but I understand that there are problems putting this
J. L. Trantham wrote:
Same here.
Yes, seems that it's pending in the UK as well.
;-)
Dave (G0DJA)
___
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
[EMAIL PROTECTED] wrote:
If your counter will accept an external reference I'd suggest using the
Thunderbolt for that and just trusting the results.
However, if the figures you've shown represent the resolution limit of your
counter then you may want to consider a counter with better
Ulrich Bangert wrote:
just in order to prevent anybody into believing that
Variation of +/- one count in the last digit is normal for
any counter. It
is caused by a slight shift between the counter gate and the
input signal.
The longer the time between digit changes, the more stable
The Thunderbolt arrived today. Thanks again to all involved.
However, it looks like my PSU is faulty.
I carefully cut the outer on the cable, splayed out the coloured inner
connectors, so as to avoid short circuits, and noticed that colours of
the insulation on the cable cores did not match
Mike S wrote:
Most switching supplies require a minimum load to operate correctly. If
the output is just open, and you don't see any voltage, it doesn't
necessarily indicate a problem.
No, the unit is dead...
I managed to get another one locally, a place called JPG in Chesterfield.
Almost
Oh, for anyone else who has the same PSU as I received, the colours of
the output, from the markings I can see on the PCB, are as follows.
Brown = Ground (Yes, honestly! The brown wire is soldered to the case
in my unit)
Black = 12 Volts (I presume nevative)
Red = +12 Volts
Green = +5 Volts
Bill Janssen wrote:
On my unit White is Common for the other voltage leads and blue is not used.
Yes Bill,
Now I've had a bit of a poke round, the white is common, it's connected
to the ground plane on the main PCB, and the blue wire is cut off just
behind the grommet.
My Thunderbolt lives!
Well, setting up the Trimble software was quite straight forward, and
I've got nearly all Green on the alarms.
The only two yellowed are Self Survey Activity and Stored Possition.
I'll do some reading of the manual before I go messing with any of the
settings.
Next thing to do is save up
David C. Partridge wrote:
The self survey will go green after it has completed the survey as will the
stored position.
Thanks for the advice Dave,
Yes, I can see that it's only 73% through the self survey, so I'll leave
it whilst I do the dinner, and see if it's finished by then.
Did I
David C. Partridge wrote:
The self survey will go green after it has completed the survey as will the
stored position.
The Self Survey has gone green as Self-Survey Progress is at 100% now,
and the Thunderbolt is seeing 7 out of the 8 satellites at the moment.
However, Stored Position is
Only 3 sats visible and the Thunderbolt has un-locked. I guess I need
to get an external antenna up ouside and clear of as many obstructions
as I can make it.
Dave (G0DJA)
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Bill Beam wrote:
The unit was shipped configured not to save position after a self-survey.
This
assures a Self-Survey after power cycle.
Thanks Bill,
Someone else pointed out my mistake as well.
So, I've now set the self-survey up again after doing as you suggested.
Thanks - Dave (G0DJA)
Sorry to be a bore, but like any kid with a new toy I'm facinated by the
changing values on the display...
What do the values under SV and AMU mean?
Maybe I should recognise them from other GPS satellite days, but they
don't seem to be values that I remember.
I'm sure it all means that they
Oh well then, I guess everyone is asleep.
So, GN all.
Dave (G0DJA)
___
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.
Chris Kuethe wrote:
What do the values under SV and AMU mean?
SV = space vehicle. mostly irrelevant, unless you care about the
serial number of the bit of metal up there. Usually people mean to say
PRN, or Pseudo-Random Noise code number - one of the 32 codes
transmitted by the satellite.
Tom Van Baak wrote:
It was used with the 10 MHz output; either to split the output
or to combine with a phased locked 10 MHz backup source
(we've seen this on other telecom frequency references).
Sounds like a nice little 'freebe' for some. :-)
I can understand that it would be better to
[EMAIL PROTECTED] wrote:
In a message dated 14/07/2008 21:09:41 GMT Daylight Time,
[EMAIL PROTECTED] writes:
Does anyone have any useful information on using it, or should I open it
up and replace the multiway socket and see if I can do something else
other than mount it outside
Tom Van Baak wrote:
Google for Trimble Palisade or see if this helps:
I did :-)
Thanks for the additional site, I'd not seen that.
Cheers - Dave
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
Robert Berg wrote:
I picked up a couple of prewired cables for the Palisade from tiger-
tech.biz
Thanks Bob,
I'll follow that up.
Cheers - Dave
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
I just received confirmation that my payment has been cleared, so I hope
my Thunderbolt is on its way. :-)
Thanks to all involved. I hope to be trawling back through the
discussions on software soon.
___
time-nuts mailing list -- time-nuts@febo.com
For a very good price I bought a Trimble Palisade the other day.
It came without the multiway plug, so I wonder if there's a source of
those anywhere?
I did find websites for programs for extracting 1PPS data, and even an
add on NMEA board, but I'm not really bothered about that.
Does anyone
Roy Phillips wrote:
Phil
Thanks for the information on importing a Thunderbolt into the UK. I hope
you are correct regarding the final imported price because it is usually the
case that to bring an item into the UK makes the end price in £ sterling the
equal to the US $ price in US $ !?
John Ackermann N8UR wrote:
Hello!
We're happy to announce that TAPR is now accepting orders from time-nuts
subscribers for the Trimble Thunderbolt GPSDO units.
Great news. :-)
Thank you to all that have made this possible, I've just placed my order.
I intend to use it to lock any future
Dr. David Kirkby wrote:
I've been receiving some emails which claim to come from my ISP saying
my messages to timenuts have been blocked due to spam.
A typical subject line is [time-nuts] ***Your message was blocked***
But I've not sent a message!
I don't think it was necessarily from
Neon John wrote:
BTW, John, what other lists do you run?
I can answer that one, I found a list at
https://www.febo.com/cgi-bin/mailman/listinfo
Which I got to by taking the time-nuts off the end of the unsubscribe
link at the bottom of the email. ;-)
Now, where did I leave my
Attila Kinali wrote:
Although, such behaviour has existed since the first cave men
draw pictures on the walls of their caves, i have the impression
that it is getting more and more pronounced over the last years.
And as you can see, it even caught technical people who were
among those who
Hello,
I'm new to this forum, so please excuse me if I use the wrong
terminology, or show up my lack of knowledge in the subject of keeping
time. Please also excuse the length of this message, but I thought it
would be best to explain, as much as I can, the set up here and the
problems that
Bruce Griffiths wrote:
Automatic adjustment of the clock rate to minimise power is incompatible
with accurate timekeeping.
Thanks for the responce Bruce,
I don't think the newer PC has that facility, and the load on it is not
all that great normally. The CPU usually reports well under
David Ackrill wrote:
Bruce Griffiths wrote:
Automatic adjustment of the clock rate to minimise power is incompatible
with accurate timekeeping.
Thanks for the responce Bruce,
I don't think the newer PC has that facility, and the load on it is not
all that great normally.
AH
David Ackrill wrote:
Anyway, at least I know more about the motherboards and operating
systems in both my PCs now. :-)
Don't they say that pride comes ahead of a fall?
I decided to get rid of my errant XP machine, and it was sort of working
OK, so I reinstalled Windows XP and went out
43 matches
Mail list logo
