Thank you for the detailed analysis, Bill. The voltage measurements I made
in my garage laboratory were duplicated by the utility with their meter,
which was connected at the service entrance. We each showed voltage in
excess of 126 VAC. Date from the (U of Tennessee) Frequency Disturbance
Recorder
There are a couple of recent threads concerning the power line mains
voltage standards. After a bit of research and thinking, I have found
that this is a complex topic. The simple answer is:
* The standard in the US for the past 50 years has been 120/240 V +/- 5%
RMS at the service entrance to
m...@alignedsolutions.com said:
> Are there "leap second" test sets that non time nuts could use to generate
> leap second events during pre commissioning tests ? (I'm envisioning some
> form of NTP server that could generate leap second events on command ?)
There is a file of leap seconds. Y
On Sun, Jan 1, 2017 at 10:44 PM, David Malone wrote:
> On Sun, Jan 01, 2017 at 05:05:45AM -0800, Hal Murray wrote:
> > gha...@gmail.com said:
> > > No NTP was running.
>
> > What software told the kernel that there was going to be a leap second
> at the
> > end of the day?
>
> I guess it was part
My 58503A was showing an alarm when I came into the shack this morning.
(I forgot to jot down the text on the display.) I cleared the alarm
(Shift-Alt) and it otherwise seems 100% happy.
-ch
73 de AI6KG
On Sun, Jan 1, 2017 at 7:02 AM, Dr. David Kirkby - Kirkby Microwave Ltd <
drkir...@kirkbymicr
Sorry if this comes across as a bit cynical but...
Presumably system functionality during leap second events would be something
that is (or could be ?)tested during the pre commissioning phase of a systems
implementation ? I would have thought this would be especially important for
"emergency
Geoff
I have also noted the pips sound different and seem to recall an on air
comment about using local time*. The last pip is not always longer.
You have also got to watch out for them using off air Freeview satellite
transmissions rebroadcast on normal radio stations!
Cheers,
Will
ZL1
My tbolts/LH also showed 00:00:60. The sequence was:
23:59:59
00:00:60
00:00:00
00:00:01
On 12/31/2016 6:28 PM, Bill Beam wrote:
My LH v5.00 showed leap second as 00:00:60 on a Tbolt. Not good
Previous June 2015 LH v3.10 correctly showed 23:59:60
If interested, I have screen captures.
Will Kimber wrote:
> If you listened to Radio New Zealand National news New Year's day
> morning you would have heard then stating there will be 7 pips at 1:00pm.
>
> However there were only 6 !!! So what happened?
I was listening to both of the above events too, and agree with your
comments Wil
Happy New Year, fellow time-tickers!
Would anyone happen to have a spare MTI 240 series OCXO, 10MHz output?
I'm looking to upgrade my TS2100.
Failing the MTI, what alternates will work? I'd be very surprised if
Vectron didn't have an equivalent.
Thanks much.
--
---
Bruc
Mark,
CSA have standards for over and under voltage, Typical no more that 3%
over and 5% under if memory serves me.
This might help (
http://www.safetyauthority.ca/sites/default/files/csa-fia3660-voltagedropcalc.pdf
)
The power companies here in Alberta are generally good about fixing
probl
Agreed, but new years eve is a special case for emergency services in
particular.
On 2/01/2017, at 2:38 AM, Bob Camp wrote:
> Hi
>
> Insertion times that are convenient for some could be a major pain for
> others. There is no
> single “good” time to insert a leap second. You might argue tha
Hi
It likely has good phase noise, poor ADEV, and “interesting” temperature
performance.
Bob
> On Jan 1, 2017, at 2:54 PM, Chuck / Judy Burch wrote:
>
>
> A few years ago I built a GPSDO using a Jupiter T and a Piezo Crystal Co.
> model 2920136 OCXO. Not having the equipment to test it I
Andy ( ZL3AG ) wrote:
> Do they add the leap second at the same moment in time throughout the world,
> or are the clocks here in NZ running 13 hours and 1 second ahead of those in
> the UK for half of Jan 1st?
As far as our "Time Pips" in New Zealand go, it didn't appear to be
correct, right from
A few years ago I built a GPSDO using a Jupiter T and a Piezo Crystal
Co. model 2920136 OCXO. Not having the equipment to test it I have
always wondered about the quality of the 2920136.
Anyone have any experience with it?
Thanks for your help.
Chuck
___
Andy,
If you listened to Radio New Zealand National news New Year's day
morning you would have heard then stating there will be 7 pips at 1:00pm.
However there were only 6 !!! So what happened?
Cheers and Happy New year,
Will
ZL1TAO
On 01/02/2017 02:07 AM, Andy ZL3AG via time-nuts wrote:
I
Lady Heather's on-screen clocks "tick" when the GPS time code message comes in.
Most receivers send the time code message around 100-250 msecs after the
actual 1PPS time. A few (like the Z3801A) send it before the 1PPS time. The
Jupiter-T sends it around 1200 msecs after the 1PPS!
Heather a
My video is there:
https://youtu.be/2hMy3XoNah4
I am wandering, if anybody else noticed that LH 5.0 watch is little
behind of some other relatively good time source ? On my video, you
could see my own NIXIE (driving by its own GPS receiver), my hand watch
(synched by WWVB), 'xclock' from my
Hi:
A few quick comments.
I've used a Variac for years at home to drop the line voltage for older
equipment with linear power supplies that run hotter than I would like. (My
HP5370B's don't fall into that category for me but I can understand why this is
an issue for some individuals.)
I'
I added this message to the Linux kernel near the end of 1993. There is
a companion message that indicates the removal of the leap second -- but
this has never been seen (except in testing!).
In retrospect, it isn't clear that jumping the clock by a second was the
right decision, but, at the t
Hmmm, yes, you're absolutely right. Now I'm confused!
Peter
On 1 January 2017 at 16:21, Deirdre O'Byrne wrote:
> Didn't the DUT1 code change from -0.4s during the minute starting 23:58:00
> to +0.6s during the minute starting 23:59:00?
>
> On 1 January 2017 at 16:06, Peter Vince wrote:
Didn't the DUT1 code change from -0.4s during the minute starting 23:58:00
to +0.6s during the minute starting 23:59:00?
On 1 January 2017 at 16:06, Peter Vince wrote:
> Hi Deirdre,
>
> Well done getting such a clear recording! Yes, the leap-second is
> effectively inserted after the DUT1
Hi Deirdre,
Well done getting such a clear recording! Yes, the leap-second is
effectively inserted after the DUT1 code on MSF as you say, even though
that isn't crystal clear from the MSF spec document that David linked to.
The DUT1 codes refer to the "current" minute, whilst all the rest of
On Sun, Jan 1, 2017 at 9:44 AM, David Malone wrote:
> On Sun, Jan 01, 2017 at 05:05:45AM -0800, Hal Murray wrote:
> > gha...@gmail.com said:
> > > No NTP was running.
>
> > What software told the kernel that there was going to be a leap second
> at the
> > end of the day?
>
> I guess it was part
> Le 1 janv. 2017 à 15:13, David Malone a écrit :
>
> On Sun, Jan 01, 2017 at 12:54:19PM +, Adrian Godwin wrote:
>> I wonder if someone wasn't ready for their extra second :
>
>> http://www.bbc.co.uk/news/uk-38482746
>
> If, as the article says, they had to record things manually from
> 00
I've been using Trimble VTS to sync a local server clock to my Thunderbolt.
I use the Meinberg NTP server as the time source for the other computers I
have. I like the Lady Heather program and what it has to offer, but it does
not seem to sync the time to the server clock the way the Timekeeper in
My setup is a raspberry pi running Linux 4.1.19 and ntpd version 4.2.6p5.
It's being fed a PPS signal from a GPS receiver, and also checks the time
against the ntp pool.
For the second starting at 23:59:58.0 UTC, NTP was reporting second number
0xdc12c4fe, and had its leap second flag set.
For th
For future reference (since I used the wrong email address when posting this
yesterday...):
I'd love to share the leap second with my friends. What are some good, easy
devices, apps and software which make for a good demo? I'd love to have
several of them, on android, iphone, linux, windows,
Hi!
In my network I have 2 Meinberg M200 clocks and 4 other GPS receivers (1
Sure GPS Evaluation board, 2 Garmin 18 LVC and a uBlox EVK-6N). I
recorded the GPS timecode strings across 00:00 UTC to see how they would
react to the leap second:
Sure GPS
timecode="$GPGGA,235955.000,4055.2138,N,00829.
Your decoded timecode only has 60 data points for the 61-seconds of the
last minute of 2016 UTC, so it's impossible to say what your decoder did
with the leap second. (Also I think you have an error in your parity bit
for the time for midnight (bit 57B)).
The long wave spectrum seems to show the s
I was watching the event on an Apple iPad with an app that was
displaying the ntp time together with the difference from Apple time. At
the leap second, the ntp app showed 23:59:60 and when I noticed (seconds
later, as it coincided with the glasses chinking and the fireworks of
New Year), Apple
I put my HP 58503A into an infinite loop where
1) Forced GPS receiver to do a survey (GPS:POS:SURVEY ONCE)
2) Waited until survey was complete (GPS:POS:HOLD? returns 1) This takes about
2 hour.
3) Recorded date (SYST:DATE?), time (SYST:TIME?) and location (GPS:POS?)
For about 4 hours before t
On Sun, Jan 01, 2017 at 05:05:45AM -0800, Hal Murray wrote:
> gha...@gmail.com said:
> > No NTP was running.
> What software told the kernel that there was going to be a leap second at the
> end of the day?
I guess it was part of systemd?
https://wiki.archlinux.org/index.php/systemd-ti
What's the best way to get a test stream for leap seconds?
Would it be feasible to have a small set of NTP servers that insert a leap
second every other day and remove it alternately?
On 31 Dec 2016 8:41 p.m., "Magnus Danielson"
wrote:
> Hi,
>
> Thought I just remind people that an alternative
On Sun, Jan 1, 2017 at 3:37 PM, Wannes Sels wrote:
> Here's mine on my Casio F-91W
> http://imgur.com/yjbhXh6
>
NICT Japan has a photo:
https://twitter.com/NICT_Publicity/status/815378497484955652
Best Regards,
Dikshie
> On Sun, Jan 1, 2017 at 4:09 AM Nick Sayer via time-nuts
> wrote:
>
>
On Sun, Jan 01, 2017 at 12:54:19PM +, Adrian Godwin wrote:
> I wonder if someone wasn't ready for their extra second :
> http://www.bbc.co.uk/news/uk-38482746
If, as the article says, they had to record things manually from
00:30 to 05:15 GMT, then I guess it probably wan't leap second
relate
Hi
Insertion times that are convenient for some could be a major pain for others.
There is no
single “good” time to insert a leap second. You might argue that doing it while
the financial
markets are closed is a good idea. That sort of rules out the middle of the
week. You also
could argue th
time-nuts@febo.com said:
> Do they add the leap second at the same moment in time throughout the world,
> or are the clocks here in NZ running 13 hours and 1 second ahead of those in
> the UK for half of Jan 1st?
It's added at the end of the last day of a month, UTC.
That makes if 4PM local tim
On 1 Jan 2017 11:10, "Hal Murray" wrote:
>
> The nice thing about the APC units is that they are close to free if you
are
> already going to purchase a UPS.
>
> I agree that something like the Dranetz 658 would be better, but a quick
peek
> at eBay shows prices far beyond what I'm willing to pay.
If so, they should think about adding the leap second on the night of the 2nd
wednesday of January, or such a time when things are quieter around the world.
Do they add the leap second at the same moment in time throughout the world, or
are the clocks here in NZ running 13 hours and 1 second ah
gha...@gmail.com said:
> No NTP was running.
What software told the kernel that there was going to be a leap second at the
end of the day?
--
These are my opinions. I hate spam.
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I wonder if someone wasn't ready for their extra second :
http://www.bbc.co.uk/news/uk-38482746
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and follow the instructions the
On Sun, Jan 01, 2017 at 02:28:23AM +, Deirdre O'Byrne wrote:
> https://www.youtube.com/watch?v=FpBxB2Yqh-U
Nice.
> Starting at 23:58:00 -
> A 1000101101001011000111010001110110010110
> B 10001000
>
> Starting at 23:59:00
The nice thing about the APC units is that they are close to free if you are
already going to purchase a UPS.
I agree that something like the Dranetz 658 would be better, but a quick peek
at eBay shows prices far beyond what I'm willing to pay.
> What's the sample rate on your APC UPS?
I don't
On 1 Jan 2017 05:07, "Chris Albertson" wrote:
>
> Just a comment for anyone who wants to log line voltage v. time. If
> you have an APC "Smart UPS" battery backup unit these will log voltage
> and frequency to a file.
If the information is for your own use only, that is probably fine. But if
y
Hi!
Trimble thunderbolt and direct on-screen capture with 1 fps from Lady
Heather 5 running on Windows XP.
23:59:59 --> 00:00:60 --> 00:00:00
https://youtu.be/pJt8bHAo_yU
It doesn't do it beautifully anymore, like older version did:
https://youtu.be/DbvMZikqtI4
--
73s!
Esa
OH4KJU
Hi,
I guess you have all seen some servers that didn’t make it. I detected 6
including one at the paris observatory .
Some were corrected or corrected themselves and some just stopped serving.
There must be hundreds out there :-(
___
time-nuts m
I saw it too, here in UTC+1 it went to 01:00:60. But the logging was correct.
23:59:59 167.06974e-09 0.0180810.611410
36.720154 5
23:59:60 176.99192e-09 -0.008905 0.611410
36.720184 5
00:00:00 186.85744e-09
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