Hello All,
A little off topic maybe - is it just me or is the Jackson-Labs.com site
down/offline?
http://www.jackson-labs.com
http://jackson-labs.com
Regards,
John Westmoreland
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
nslookup fails and whois shows their domain registration expired yesterday
On 2013-09-03 01:42, John C. Westmoreland, P.E. wrote:
Hello All,
A little off topic maybe - is it just me or is the Jackson-Labs.com site
down/offline?
http://www.jackson-labs.com
http://jackson-labs.com
Regards,
Hello Brian,
I hope Said knows.
I hope someone doesn't rip off their domain.
Regards,
John W.
On Tue, Sep 3, 2013 at 1:27 AM, Brian Inglis
brian.ing...@systematicsw.ab.ca wrote:
nslookup fails and whois shows their domain registration expired yesterday
On 2013-09-03 01:42, John C.
Hi
The power input is fully isolated from the case. That's typical telecom
practice. In addition it's run through a full wave bridge, so polarity (and
wiring errors) are not as big a deal. You *could* run one off of +/- 12 volts.
Anything between about 22 volts and 56 volts will run the unit.
Well, reading the spec sheet, it says -48VDC (-40Vdc min, -60Vdc max) at 2.8A
for warm up and .6 during run time 350mv ripple, OR +24Vdc (20Vdc min, 30Vdc
max) at 3.57A for warm up and 1.03A run 240mv p-p ripple. I'm assuming that
after the bridge there's some sort of switcher that feeds the
It is very rare to see courts deal with time precisions less
than minutes, but it seems to have happened in this case:
(from: www.judiciary.state.nj.us/opinions/a1128-12.pdf)
Best stopped his truck, saw the severity of the injuries,
and called 911. The time of the 911 call was
Hi Bill
I guess technology moved along. I think of the mix type of syn like genrad
made 1164 maybe. Son of a guns to keep working and I think they are noisey.
Granted in the day they were not bad for what they were doing.
You could emulate much in todays technology. But I think cost becomes an
On 9/3/13 7:07 AM, Poul-Henning Kamp wrote:
It is very rare to see courts deal with time precisions less
than minutes, but it seems to have happened in this case:
Interesting (and of course, this case has been in the news recently)..
In this case, all the messages were presumably handled by
On 9/2/13 7:50 PM, Bill Hawkins wrote:
Why do we hardly ever talk about synthesizers - those boxes that
turn 10 MHz into other frequencies?
We do.. there's a fair amount of talk about boxes like the PTS
synthesizers. And there's been talk about 866x series synths, and
perhaps the 3325,
Hi
The application for all these boxes is cell tower infrastructure. Some of the
world likes the old style 48 volt power (like the old ATT) and some like 24
volt power. The spec sheet is written so that either the 24 volt guys or the
48 volt guys will be happy with the part. I don't know of
I have a Nortel /Trimble 45000 which appears to be the bare board that
is is in the NTBW50AA and I have been running it for several months now
off of the power cube for an old printer that is rated for 30VDC, it is
just rectified and filtered, the output from the cube is not
regulated.The
On 9/3/2013 10:56 AM, Jim Lux wrote:
In this case, all the messages were presumably handled by the same
carrier, so the issue of skew in timestamps is negligible; they're all
presumably running off the same clock.
But not necessarily the same time. For instance, some cell systems run
on GPS
Hi guys,
Thanks for the heads up, all should be well now. The auto-renew did not work
because we moved and they had an old CC address. Domains that expire stay
locked for 36+ days to the old owner, so no risk there..
This brings up a good point, we have had an open req for a software engineer
I remember a lecture by an officer of the (London) Met Police about how
tracable time was essential to demolishing the defence of wrong clock in
accidents involving the illegal use of mobile phones when moving and even
parking meter tickets. They had to argue why the cell time was more right
In message 5225f8af.60...@earthlink.net, Jim Lux writes:
In this case, all the messages were presumably handled by the same
carrier, so the issue of skew in timestamps is negligible;
Anything but.
The text-messages are likely stamped by the SS7-message-gateway
and the 911 call by the countys
You can find (for better or worse) NTSB analysis of various recorder
timestamps relative to cell phone timestamp.
http://www.ntsb.gov/investigations/summary/RAR1001.html
6
In this report, all times associated with the sending or receiving of
calls and text messages are from Verizon
records. In
Nowhere does the opinion mention if the timestamps were taken on
the same clock or if the two clocks were synchronized.
PHK,
Correct. This is an age-old problem, whether its minutes or nanoseconds.
Time-stamps are inherently relative to a local oscillator's time and rate
offset, and affected
On 09/03/2013 11:47 PM, Tom Van Baak wrote:
Nowhere does the opinion mention if the timestamps were taken on
the same clock or if the two clocks were synchronized.
PHK,
Correct. This is an age-old problem, whether its minutes or nanoseconds.
Time-stamps are inherently relative to a local
The one mix and match synth I've not got working is my HP 5100B/5110B. It
came to me for the price of about 15 gallons of gas, and day on the road.
Was stored in a unheated shop for at least two decades, if not three. Why
have one ? .. Goes with the GR1161, 1162, (No 1164 or 68 yet), PTS 160,
Somewhat off-topic but it might help someone out: I've had a tough time
finding, and using, files on the net containing raw GPS signal samples to be
used with the various software-only (or software-mostly) GPS receivers out
there. I finally got a file of data that works and have have posted it
On 09/04/2013 12:19 AM, Tom Van Baak wrote:
Yeah, the question is even if you have a legal support for what correct
time or even traceable time actually is or means. I know countries that
does not even legally accept UTC.
It could be better, way better.
Cheers,
Magnus
Still, imagine
Tom,
Did you ever reset that thing to the correct time? =)
Bob
From: Tom Van Baak t...@leapsecond.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Tuesday, September 3, 2013 5:19 PM
Subject: Re: [time-nuts] sub-minute
On 9/3/13 10:20 AM, Said Jackson wrote:
Hi guys,
Thanks for the heads up, all should be well now. The auto-renew did not work
because we moved and they had an old CC address. Domains that expire stay
locked for 36+ days to the old owner, so no risk there..
This brings up a good point, we
There was a recent, fairly long, 'conversation' about the 3325A and
resurrecting it from a failed EPROM (and other problems, I think) that
ultimately was resolved by replacing the four Synertek 32K EPROM's with two
MCM68766 64K EPROM's. From what I have been told, it was a simple matter of
Jim,
It must have been the 223ps and 32 part per trillion spike at the end of the
plot:
http://www.jackson-labs.com/images/gpsstat.htm
:)
Sent From iPhone
On Sep 3, 2013, at 16:22, Jim Lux jim...@earthlink.net wrote:
On 9/3/13 10:20 AM, Said Jackson wrote:
Hi guys,
Thanks for the heads
Pete
A shame we did not meet a few years ago I had 2 1164s. Both working and
cranky.
Often thought about using modern technology per decade. Anyhow you could
have been the proud owner of both of them for that magical box we send back
and forth. As it was I darnear gave them a way for a song at a
Joe
On the 3325 I will also bet they had to change a jumper next to each
socket. HP was quite good about that. I just did sort of teh same fix on my
HP54100d that simply forgot. Lucky for me after 3 years of hunting someone
finally put a good set on Diddiers site.
Regards
Paul.
On Tue, Sep 3,
Who among you has volunteered to do the research for this?
I don't have a camera in my cell phone, and I avoid market research
masquerading as insecure social networks.
Bill Hawkins
-Original Message-
Tom Van Baak said,
For extra credit, further photos can be sent each hour for hours
On 9/3/13 11:21 AM, Poul-Henning Kamp wrote:
In message 5225f8af.60...@earthlink.net, Jim Lux writes:
In this case, all the messages were presumably handled by the same
carrier, so the issue of skew in timestamps is negligible;
Anything but.
The text-messages are likely stamped by the
On 9/3/13 2:47 PM, Tom Van Baak wrote:
Nowhere does the opinion mention if the timestamps were taken on
the same clock or if the two clocks were synchronized.
PHK,
Correct. This is an age-old problem, whether its minutes or
nanoseconds. Time-stamps are inherently relative to a local
Re: time-nuts Digest, Vol 110, Issue 13
On Tue, 03 Sep 2013 19:52:17 -0400, time-nuts-requ...@febo.com wrote:
Date: Wed, 04 Sep 2013 00:27:18 +0200
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Subject: Re: [time-nuts] sub-minute time-precision in court-case
Re the PSAP timekeeping Requirement: See NENA 04-002, Traceable UTC
Source, Master Clock Specification
http://www.nena.org/resource/collection/6EE32917-37BD-4FA0-838C-026931F702A6/NENA_04-002-v4_PSAP_Master_Clock.pdf
On 9/3/2013 7:59 PM, Jim Lux wrote:
I was assuming (with no real basis, I
This precisely why I stopped wearing a watch years ago
Stranger: What time is it?
Me: When?
Stranger: What 'when'? - now of course!
Me: Now - where? - Now you? or Now me? (Hint ~ 3 nsec dt)
and so forth and so on.
better a watch don't have - no questions
On Tue, Sep 3, 2013 at 4:47 PM, Tom
I'm looking for an easy way to get current lat lon, when you've got a
GPS-18 hooked up for NTP. That is, the GPS receiver is there doing it's
NTP thing, so presumably it knows where it is.
If NTP is decoding the GPRMC message, it has the lat/lon in it, so how
can I get that info out (in a
On 9/3/13 5:35 PM, Jim Lux wrote:
I'm looking for an easy way to get current lat lon, when you've got a
GPS-18 hooked up for NTP. That is, the GPS receiver is there doing it's
NTP thing, so presumably it knows where it is.
If NTP is decoding the GPRMC message, it has the lat/lon in it, so how
Paul,
Actually, I don't know about the jumper issue. I think it worked with the
jumpers 'as they were'.
The thread was on the HP/Agilent group.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of paul swed
Sent: Tuesday, September
- Original Message -
From: Jim Lux jim...@earthlink.net
To: Poul-Henning Kamp p...@phk.freebsd.dk
Cc: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, September 03, 2013 7:59 PM
Subject: Re: [time-nuts] sub-minute time-precision in court-case
On Wed, Sep 4, 2013 at 8:35 AM, Jim Lux jim...@earthlink.net wrote:
I'm looking for an easy way to get current lat lon, when you've got a
GPS-18 hooked up for NTP. That is, the GPS receiver is there doing it's
NTP thing, so presumably it knows where it is.
If NTP is decoding the GPRMC
One very direct way is to find some software to sniff the com port where the
GPS receiver is. I'm a Linux guy, so I can't help you on that one.
Bob - AE6RV
From: Jim Lux jim...@earthlink.net
To: Discussion of precise time and frequency measurement
How about a serial port spy/monitor program. There are some free ones like:
http://www.serial-port-monitor.com/
Brian
On 9/4/2013 01:30, Bob Stewart wrote:
One very direct way is to find some software to sniff the com port where the
GPS receiver is. I'm a Linux guy, so I can't help you on
Wouldn't turning off ntp drive it nuts?
At the risk of throwing out the bone head answer and assuming this isn't
going on your next space craft, you could just split the GPS serial (my
quick google showed the 18 to be the serial unit vs usb) signal and run a
copy to another comm port..
Yeah -
Ah the 8660's
Image 22 8660A's in two racks, was an fun tax payer, paid project :-)
We where never told what the master clock was.
Have S/N suffix 0009 in the garage.
For you time nuts, a side hobby should be frequency nuts. How to
produce the cleanest synth'ed signal but be able to change it
On 9/3/13 6:47 PM, brent evers wrote:
Wouldn't turning off ntp drive it nuts?
At the risk of throwing out the bone head answer and assuming this isn't
going on your next space craft, you could just split the GPS serial (my
quick google showed the 18 to be the serial unit vs usb) signal and run
On 9/3/13 7:14 PM, Pete Lancashire wrote:
Ah the 8660's
Image 22 8660A's in two racks, was an fun tax payer, paid project :-)
We where never told what the master clock was.
Have S/N suffix 0009 in the garage.
For you time nuts, a side hobby should be frequency nuts. How to
produce the
I have four PTS synthesizers. They're the bees knees...
fixed up an Arduino interface to control 3 of them. The fourth is a
special that I got through careless ebay picture and text analysis; good
for some parts.
Don
Jim Lux
On 9/3/13 7:14 PM, Pete Lancashire wrote:
Ah the 8660's
Image 22
This question might be more appropriate for the NTP list at
questi...@lists.ntp.org.
Assuming you are using GPS 18 NMEA output and NMEA driver 20, set the statsdir
either using the startup command line option -s or the conf command statsdir, as
shown below, and enable clockstats: appends the
On Wed, Sep 4, 2013 at 6:19 AM, Tom Van Baak t...@leapsecond.com wrote:
Does it help if we both have GPS? Both have cesium(s) in the back seat?
Since the GPS communicates over Radio Frequencies, please ensure it is
capable of hands-free operation while you are operating the vehicle.
Next,
47 matches
Mail list logo
