On Nov 8, 2014, at 7:11 PM, Jim Lux jim...@earthlink.net wrote:
On 11/8/14, 6:58 PM, Pete Lancashire wrote:
Is this who you got it from
http://www.css-timemachines.com/
if so, why not contact them ?
I’ve sent email to them, but I don’t expect an answer before Monday. I was
hoping
List,
The common denominator capacitor for the HP 3586 is 470 uF/
50V.
The HP 3586B uses about 18. The capacitor is a Panasonic P/N 667-EEU-FR1H471B
The common denominator capacitor for the HP 5370B is 105C /
6,000 Hr. 150 uF / 50V. The 3586 uses about 20.
I am willing to sell them for
Go on - actually stepping or mixing then filtering the output? Or
numerically deriving an offset?
I am well on my way to en ensemble of sources - and my plan has always been
to build a diverse set of circuits and attempt to capture the best of
each. I just wasn't sure the best approach.
At
If you’re referring to this:
I think he's referring to section 4.3 Resetting to Factory Defaults
Regards,
David Partridge
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You also have to reboot after a PW change ...
Regards,
David Partridge
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Hi,
I'm looking for the manual for a Datum 9150-5106 Airborne Time Code
Generator.
Unfortunately I got rid of all my Datum manuals some time back. Hope someone
can help.
Many thanks
Rob
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To
Hi
The reason for the KS-2461 box on the end is to make things easy(er).
Trying to get all the crossovers done and working into 1 ms / 1 KHz is beyond
what I’m willing to do on this project.
Here’s my thought:
Take the Lucent box and let it do it’s thing out to 100 or (more likely) 1000
Hello to the group thanks for the help so far.
The KS-24361 is running and communicating with the z3811 software.
Question 1
I have an active antenna system so need to fake out the 24361.
I have tried a 220 and 110 ohm R on the antenna with rf input Isolating
capacitor to simulate the current n
On Sat, Nov 8, 2014 at 11:13 PM, Neil Schroeder gign...@gmail.com wrote:
At one point I was considering phase locking all of them together - but
again that seemed less than straightforward. You can do it PLL back to
back, but is there a way to have a loop that contains multiple clocks? I
Hi
Another one up and running !!!
On Nov 9, 2014, at 11:08 AM, paul swed paulsw...@gmail.com wrote:
Hello to the group thanks for the help so far.
The KS-24361 is running and communicating with the z3811 software.
Question 1
I have an active antenna system so need to fake out the 24361.
Hi
On Nov 9, 2014, at 11:18 AM, Chris Albertson albertson.ch...@gmail.com
wrote:
On Sat, Nov 8, 2014 at 11:13 PM, Neil Schroeder gign...@gmail.com wrote:
At one point I was considering phase locking all of them together - but
again that seemed less than straightforward. You can do it
On Sun, Nov 9, 2014 at 1:11 PM, Bob Camp kb...@n1k.org wrote:
NTP's aim is mainly to throw out bad clocks and pick one as best. We would
more likely want to combine the outputs and use all of the good clocks we
have.
By default NTP makes a paper clock from all acceptable sources (up to some
On Sun, Nov 9, 2014 at 10:11 AM, Bob Camp kb...@n1k.org wrote:
That may (or may not) give you the best ADEV on the output. My guess is
that the filtering algorithm will need to be a bit more complex. NTP’s aim
is mainly to throw out bad clocks and pick one as best. We would more
likely want
Hi
The main point is that NTP picks *one* source from among it’s batch of inputs
and uses that. The ADEV of the output can be no better than the ADEV of the
output.
In the case of an ensemble of clocks combined with a better approach the ADEV
of the output can be better than the ADEV of the
Hi
On Nov 9, 2014, at 3:31 PM, Chris Albertson albertson.ch...@gmail.com wrote:
On Sun, Nov 9, 2014 at 10:11 AM, Bob Camp kb...@n1k.org wrote:
That may (or may not) give you the best ADEV on the output. My guess is
that the filtering algorithm will need to be a bit more complex. NTP’s
In message CABbxVHtommjwSWq1i=oH-u1S=G6P=xu8e0yzekadg-vchgk...@mail.gmail.com
, Chris Albertson writes:
NTP does not pick the best clock. NTP finds
the subset of clocks that track each other.
NTP does indeed find the best clock from the subset of clocks
which pass its sanity check,
On Sun, Nov 9, 2014 at 3:44 PM, Poul-Henning Kamp p...@phk.freebsd.dk
wrote:
NTP does indeed find the best clock from the subset of clocks
which pass its sanity check, and then it uses only that one.
Normally I wouldn't question your NTP assertions but I suspect a great many
people believe
Dear time-nuts,
Can anyone enlighten me by telling which IC has been used for creating the
+2.5V reference voltage on the oscillator board of the E1938?It's the only IC
in the diagram where the type number is not mentioned. In a post of years back
I found LT1121, but that one is a voltage
Last comment
Seems a shame there is not a repository we could add all this good
information to.
I believe its going to get lost with this method.
Hi Paul,
The time-nuts list is sort of a repository. Or at least that's what it was
intended to be. The list works best when the number of
On Sun, Nov 9, 2014 at 3:45 PM, Bob Camp kb...@n1k.org wrote:
The main point is that NTP picks *one* source
Not according to the documentation (since at least 2005). I'll admit to
not
having read the code for the primary algorithms.
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time-nuts
On Sun, 09 Nov 2014 12:34:00 -0500, Bob Camp wrote:
There are multiple sites that I’m sure would be happy to
store a consolidated page (or ten) of information.
Didn't Tom ... or was it Brooke post an url to his still empty webpage ,
and saying he'd start fill in when he got his unit(s) ?
Mine
Right. I did the reset to factory defaults jumper thing and it came back to
life. I’m using it now with the default setup.
I got a reply from somebody named Doug at css-timemachines suggesting that I
use a different browser (I had been using Safari on my desktop Mac) so I
switched to Chrome
On Sun, Nov 9, 2014 at 12:45 PM, Bob Camp kb...@n1k.org wrote:
Hi
The main point is that NTP picks *one* source from among it’s batch of
inputs and uses that. The ADEV of the output can be no better than the ADEV
of the output.
The statement above is not correct. NTP does not select just
Reading the manual, (page 8) the device can be set up to output NMEA
over the serial port. There are a few different pieces of code to
display that data.
Have had mine two weeks. It got gps lock before I could point the
browser at it's ip.
Just syncing a bunch of cameras as well being the house
Folks,
I have been working with the first of two of these systems purchased from the
auction site. I have a few observations and comments to offer:
Bob said:
In normal use Lucent treats the Ref-0 unit as the master and Ref-1 as
the slave, but it's Ref-1 that contains the GPS module.
HI
What is going on is that people are confusing the estimation process that is
used by the selection process (which does look at a lot of stuff) and how that
is described. They are then making the leap to the locking process, which is
something else altogether. It’s easy to see that this is
Hi
On a normal GPS based gizmo, you should be seeing 6 to 8 satellites just about
all the time. Carrier to noise ratios typically are in the 40 db range. You
seem to be “antenna challenged”.
If you are in the northern hemisphere, a view to the north is not of much use.
The prime viewing
In message CAKyJ6kbZ5bzSoxB4vxRb3=9NJTiz70jzk9TOcmuizZ1Xv=b...@mail.gmail.com
, Paul writes:
You're saying these documents affirming clock combining are wrong? Or have
I gone terribly astray?
I'm saying that with NTP there is plenty of room between theory and
practice :-)
--
NTP does not pick the best clock. NTP finds
the subset of clocks that track each other.
NTP does indeed find the best clock from the subset of clocks
which pass its sanity check, and then it uses only that one.
There are several problems with that, and as we speak I'm developing
a new
Hi, I was the designer of the board, but I don't remember the
part number of the reference. I will try to consult my paper
schematic when I get a chance, if no one else can help you.
I do remember that I originally used some convenient reference
which seemed OK from the data sheet, but turned
In message bf75ef8568d7310a05437461dac9cb87.squir...@webmail.lysator.liu.se,
=?iso-8859-1?Q?=22Bj=F6rn_Gabrielsson=22?= writes:
Nevertheless I was a bit surprised that the computer continued to serve
time claiming to be a S1-server, even if both local refclock and a number
of external
kb...@n1k.org said:
What is going on is that people are confusing the estimation process that is
used by the selection process (which does look at a lot of stuff) and how
that is described. ...
In this context, it's important to remember that there are 2 parameters
associated with the
On Sun, Nov 9, 2014 at 5:22 PM, Bob Camp kb...@n1k.org wrote:
What is going on is that people are confusing the estimation process that
is used by the selection process (which does look at a lot of stuff) and
how that is described. They are then making the leap to the locking
process, which
Hi
Here’s what I’m saying:
The NTP algorithm as it is written and as it is implemented results in an
output clock that does *not* improve when a number of very good clocks are
being used and the output is compared to the input. In that case and that case
alone, the system simply does what one
In a message dated 09/11/2014 21:33:48 GMT Standard Time,
t...@leapsecond.com writes:
and 27 8×10 color glossy pictures with circles and arrows and a paragraph
on the back of each one.
Now that's not something I've heard for a while:-)
Nigel
GM8PZR
On Sun, Nov 9, 2014 at 5:37 PM, Björn Gabrielsson b...@lysator.liu.se
wrote:
Nevertheless I was a bit surprised that the computer continued to serve
time claiming to be a S1-server,
Enabling PPS behaves a bit like a back-door in the recent/current
releases. Among other somewhat surprising
Hi
We aim to stay up with the times here on TimeNuts.
At some point we will get into hacking the main board to switch from 15 MHz to
10 MHz. If you do it so you keep most of what’s there, pictures will be very
much needed. We likely will get into the “cut this trace here” and “jumper from
You can get anything you want...
GandalfG8--- via time-nuts
In a message dated 09/11/2014 21:33:48 GMT Standard Time,
t...@leapsecond.com writes:
and 27 8×10 color glossy pictures with circles and arrows and a paragraph
on the back of each one.
Now that's not something I've heard for a
LOL
Happy Thanksgiving:-)
In a message dated 10/11/2014 00:23:32 GMT Standard Time, d...@montana.com
writes:
You can get anything you want...
GandalfG8--- via time-nuts
In a message dated 09/11/2014 21:33:48 GMT Standard Time,
t...@leapsecond.com writes:
and 27 8×10 color glossy
On Sun, Nov 9, 2014 at 6:18 PM, Bob Camp kb...@n1k.org wrote:
The NTP algorithm as it is written and as it is implemented results in an
output clock that does *not* improve when a number of very good clocks are
being used and the output is compared to the input. In that case and that
case
Thanks Bob,
I believe the status screen only shows the first three sats. It may get more,
but it doesn’t report them. There does not seem to be any way of getting more
info from the web interface. The serial interface is poorly documented — there
may be more info available from it, but they
OK have an answer for the antenna sense system.
Bert had suggested a 220 ohm resistor and inductor on the GPS antenna input.
Well there is a catch to that.
If you connect the resistor externally say through a tee connector it will
work.
If you connect it across the GPS receiver it will not work.
Turns out the Interface J5 perfectly accepts .1 inch spaced pins.
You may have these laying around. I simply snipped off 2 sets of 3 pins.
Placing them in J5 1-3 and J5 6-8. The additional pins make it very stable.
Then solder ground from pin 8 to 3 and 470 ohm chip resistor from 3 to 2.
Thats
I did it at the antenna connector at the front panel for the reason that
you just stated. At the same time I inserted a SMA connector since all my
cables and splitters are SMA. There is a pinout for SMA.
Bert Kehren
In a message dated 11/9/2014 8:28:14 P.M. Eastern Standard Time,
Rick wrote:
Signal Strength: Satellite 1: 32 dB, Satellite 2: 31 dB, Satellite 3: 30 dB
Bob replied:
On a normal GPS based gizmo, you should be seeing 6 to 8 satellites just
about all the time. Carrier to noise ratios typically are in the 40 db
range. You seem to be “antenna
Count me in on the 10 MHz. Thats my distribution format.
Regards
Paul
WB8TSL
On Sun, Nov 9, 2014 at 7:37 PM, GandalfG8--- via time-nuts
time-nuts@febo.com wrote:
LOL
Happy Thanksgiving:-)
In a message dated 10/11/2014 00:23:32 GMT Standard Time, d...@montana.com
writes:
You can get
List,
OK everybody, let’s not get our pacemakers wound upG
The problem. (Long Intro)
I have about 15 pieces or so of older HP test equipment.
3586B, 5370B, 5335A to name a few. Because of their age of 20+ years a few
have failed and need repair. I
have decided to go on a wholesale
List,
Wrote: The days of DIP parts are drawing to a close.
I was shocked, absolutely shocked, really, when I looked at
the latest Mouser catalog about the lack of PDIP I.C.’s.
That said, we are faced with a dilemma.
In all my HP test equipment I probably have 500 or more PDip
IC’s, so what
Hi
I toss my DC load resistors on an un-used port on the splitter. That way they
really don’ mess anything up. I don’t bother with a coil, but I also don’t
bother with short leads.
Bob
On Nov 9, 2014, at 8:33 PM, paul swed paulsw...@gmail.com wrote:
Turns out the Interface J5 perfectly
Hi
I think there are a *lot* of people here who have them and would like 10 MHz.
My guess is that if we put it to a vote it would be about 120% of them….
Bob
On Nov 9, 2014, at 9:28 PM, paul swed paulsw...@gmail.com wrote:
Count me in on the 10 MHz. Thats my distribution format.
Regards
Hi
The high grade aluminum electrolytics and the tantalums will look quite
different on a network analyzer as you sweep them from 100 KHz up The ESR of
the electrolyitcs will be significantly higher and they may go inductive. The
tantalum caps (for what ever reason, I’ve seen more than one
Not sure if this matters but the pins for the interface connector say .156
They are square.
The receiver is running quite nicely now. I added the external battery to
it 2 X AAA.
These are external. Easy to replace and monitor. On the Z3801 the batteries
have lasted a long time. I am more
Well teh next step would be to pull the receiver out of the case and do
some probing. But since I have just gotten it to work I may let it cook a
bit before I go digging.
The great news is the oscillator is 5 Mhz. So even if you have to double it
thats not to bad.
Regards
Paul.
WB8TSL
On Sun, Nov
Hi
There is one thing to consider:
At the point that the monthly rent on the storage spaces equals Y
— and —
As you add more spares it goes to 2 x Y
— and —
There 12 months in a year
— and —
This *will* go on for years
How much is a brand new bench full of gear?
How much is a bench
Hi
Since the seller was nice enough to extend a great warranty on these, I figure
I should keep my fingers mostly out for the first 30 days. That’s ok at least
as far as chopping out parts and cutting traces. I can’t stay out in terms of
looking … can I … not a chance.
Bob
On Nov 9, 2014,
- Original Message -
From: Perry Sandeen via time-nuts time-nuts@febo.com
To: time-nuts time-nuts@febo.com
Sent: Saturday, November 08, 2014 6:32 PM
Subject: [time-nuts] Electrolytic Capacitor Question
List,
OK everybody, let’s not get our pacemakers wound upG
The problem. (Long
I have one complete setup on the way. Any thoughts as to whether it is better
to get a second complete set or just go for the unit that has the GPS in it?
This would be as a spare or possibly actual use.
Thanks.
Fred
KE6CD
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Hi Lizeth,
I’ve noticed that it’s very quick to come to a preliminary lock — though the
lock is often exactly 1.000 sec off for 5-10 minutes. Eventually that fixes
itself.
Do you know if the NMEA output (once enabled, and once there is a listener to
record it) would tell which satellites are
In message 4cdc0090-dd4b-4380-acc1-40a80d3bc...@n1k.org, Bob Camp writes:
Hi
Here’s what I’m saying:
The NTP algorithm as it is written and as it is implemented results
in an output clock that does *not* improve when a number of very
good clocks are being used [...]
The crucial word
In message 1415494044.79600.yahoomail...@web161505.mail.bf1.yahoo.com, Perry
Sandeen via time-nuts writes:
I was shocked, absolutely shocked, really, when I looked at
the latest Mouser catalog about the lack of PDIP I.C.’s.
That said, we are faced with a dilemma.
In all my HP test
Hi,
On 11/09/2014 11:40 PM, Poul-Henning Kamp wrote:
In message CAKyJ6kbZ5bzSoxB4vxRb3=9NJTiz70jzk9TOcmuizZ1Xv=b...@mail.gmail.com
, Paul writes:
You're saying these documents affirming clock combining are wrong? Or have
I gone terribly astray?
I'm saying that with NTP there is
On Sun, 09 Nov 2014 23:21:22 -0500
Tom Miller tmiller11...@verizon.net wrote:
snip
Take a look at the Aluminum Organic Polymer Electrolytics.
Available in 105 °C and 125 °C. They have very low ESRs. In the
milliohms.
From: Poul-Henning Kamp
[]
My first target is a daemon for clients, that's the most efficient
way to eliminate as many KLOC-executions from the world as possible
as fast as possible.
After that, the intent is to reuse the same components also for
S2+ slave servers, and later again S1 servers.
Sorry, I intended to say that this question concerns the KS-24361 units. Forgot
to put that in the subject line!
I have one complete setup on the way. Any thoughts as to whether it is better
to get a second complete set or just go for the unit that has the GPS in it?
This would be as a
On 11/09/2014 05:18 PM, Chris Albertson wrote:
On Sat, Nov 8, 2014 at 11:13 PM, Neil Schroeder gign...@gmail.com wrote:
At one point I was considering phase locking all of them together - but
again that seemed less than straightforward. You can do it PLL back to
back, but is there a way to
In message 0AA8645271A94DF3968C90FE6BF94276@Alta, David J Taylor writes:
- that there is (eventually) a Windows implementation.
I'm writing the code to be as portable as I can make it, but I have
neither Windows machines nor clue how to program for their kernel-time-api.
- that it
On 11/09/2014 07:11 PM, Bob Camp wrote:
Hi
On Nov 9, 2014, at 11:18 AM, Chris Albertson albertson.ch...@gmail.com wrote:
On Sat, Nov 8, 2014 at 11:13 PM, Neil Schroeder gign...@gmail.com wrote:
At one point I was considering phase locking all of them together - but
again that seemed less
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