In message aanlktimatp72p6xqnzko7xwlrribwoktf0r55qzhc...@mail.gmail.com, Pete
Lancashire writes:
This one makes fan noises the yellow trigger/level LEDs light up but
the LEDs controlled buy the CPU don't. One segment of one digit
flashes when the power switch is hit. Both were advertised as
- Original Message
From: jimlux jim...@earthlink.net
To: time-nuts@febo.com
Sent: Tue, February 8, 2011 4:00:43 PM
Subject: Re: [time-nuts] Calculate spectral content from a series of zero
crossing time stamps?
The Chirp-z transform (Bluestein) is also useful when you want a small
- Original Message
From: Henk h...@deriesp.demon.nl
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Tue, February 8, 2011 10:19:38 PM
Subject: Re: [time-nuts] Calculate spectral content from a series of zero
crossing time stamps?
Wavecrest uses
On 2/9/11 3:17 AM, Tijd Dingen wrote:
(if you want some ancient FORTRAN IV code for this, I've probably got a listing
in a box out in the garage from the 70s)
Does this box also happen to contain verilog code for it?
I don't think Verilog was even a gleam in the inventors' eyes back in
The language is Elvish and says, Can you believe that sucker bought this
piece of crap?
OK, OK, only teasing. [?]
On Wed, Feb 9, 2011 at 3:49 AM, Poul-Henning Kamp p...@phk.freebsd.dkwrote:
In message aanlktimatp72p6xqnzko7xwlrribwoktf0r55qzhc...@mail.gmail.com,
Pete
Lancashire writes:
Looks to be mostly a plot of the 5370B's noise floor at low taus.
You may need something a couple of decades better if you want to measure the
Tbolt at that tau setting.
BTW, You should NOT set the TBolt's TC to 999 sec. I have found that the
control can become somewhat unpredictable, AKA
Hello,
I’m re-building the User Service manual for the 53070B counter, cleaning the
pages and stitching all the schematics so they are easier to read.
I’ve found several different manuals on the internet but all of them are
missing the page fifth part of page 8-99, which folds out on page 297
In message bay146-ds4f2c6323b4ea3f3ad2f96b2...@phx.gbl, Roberto Barrios wri
tes:
I belive the pdf file is made from my manual, so presumably that part of
the page should still be physically in it, so if nothing else I can
scan a copy of that...
--
Poul-Henning Kamp | UNIX since Zilog Zeus
Hi Fred,
A METHOD OF SERIAL DATA JITTER ANALYSIS USING ONE-SHOT TIME INTERVAL
MEASUREMENTS is in the white paper section of GigaMax 'tecnical resources'.
They split GigaMax from Wavecrest, probably after some bad financial times. The
Wavecrest white papers are now at GigaMax.
Henk
Op 9 feb
Hi everyone.
I own an HP 5370A. I do GPIB and Labview, KE5FX Utilities, DF6JB's Plotter,
spreadsheets etc. Always looking to improve my setup...
Here is a simple question: Why should I try to get an HP 5372A (or 5371A)? What
are the benefits over the 5370A? Worth spending?
Thanks in advance,
In message 699621.92879...@web112010.mail.gq1.yahoo.com, Bert, VE2ZAZ write
s:
Here is a simple question: Why should I try to get an HP 5372A (or 5371A)?
What are the benefits over the 5370A? Worth spending?
Faster measurements (but not quite as precise) and zero dead-time
measurements.
See for
Hi Bert,
On 09/02/11 19:56, Bert, VE2ZAZ wrote:
Hi everyone.
I own an HP 5370A. I do GPIB and Labview, KE5FX Utilities, DF6JB's Plotter,
spreadsheets etc. Always looking to improve my setup...
Here is a simple question: Why should I try to get an HP 5372A (or 5371A)? What
are the benefits
Hi Henk,
On 08/02/11 22:19, Henk wrote:
Hi,
Wavecrest uses algorithms for this and their software gives a spectrum. They
also give some info on their site.
In Jitter, Noise and Signal Integrity at High-Speed by Mike Peng Li,
Prentice Hall, ISBN 0-13-242961-6 it is covered in pages 200-207.
On 09/02/11 19:11, Henk wrote:
Hi Fred,
A METHOD OF SERIAL DATA JITTER ANALYSIS USING ONE-SHOT TIME INTERVAL
MEASUREMENTS is in the white paper section of GigaMax 'tecnical resources'.
They split GigaMax from Wavecrest, probably after some bad financial times. The
Wavecrest white papers are
If you've got one, it can be hard to justify buying the other unless you
have some very specific requirements. There's a lot of overlap between
them. I have a 5372A and have wondered if it's worth getting a 5370(A
or B). So far, the answer for me is no.
Here are a few things that I've used
In message bay146-ds4f2c6323b4ea3f3ad2f96b2...@phx.gbl, Roberto Barrios wri
tes:
I belive this is the bit you are missing:
http://phk.freebsd.dk/misc/hp5370b-p8-99.pdf
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
Hi Ed,
excellent email. You raise the SNR of this forum!
I have tried to measure the CW-12 output myself with phase noise and Allan
Deviation equipment, and the constant cycle jumps prevent these from giving
sensible results. Both PN and ADEV plots look awful, many orders of
magnitude
Hi
We really do need a simple app to extend the 5371 and 5372 for longer time
ranges. If there's one out there, I've certainly missed it as I've looked
around.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ed Palmer
Sent:
saidj...@aol.com wrote:
Hi Ed,
excellent email. You raise the SNR of this forum!
Thanks Said. It's rare that I have a chance to contribute. Many of
these discussions are way over my head, but I'm learning.
I have tried to measure the CW-12 output myself with phase noise and Allan
On 09/02/11 22:14, Ed Palmer wrote:
I routinely use the 5372A to make multiple 1 sec. measurements of
frequency or time interval and then dump the results via GPIB for
analysis. Standard stuff for either the 5370 or 5372 except as mentioned
elsewhere, these measurements are made with no dead
On 09/02/11 22:36, Bob Camp wrote:
Hi
We really do need a simple app to extend the 5371 and 5372 for longer time
ranges. If there's one out there, I've certainly missed it as I've looked
around.
A very simple way is to trigger measurements regularly (say 10 Hz) and
then read-out the
The only chance would be to use the binary programming mode, but it
would only be worthwhile if it would maintain the zero-deadtime
capability. I don't know how to confirm if it does or doesn't. It's on
my 'round tuit' list to play with, but it won't be happening any time
soon. Did you
Henk wrote:
Wavecrest uses algorithms for this and their software gives a spectrum.
They also give some info on their site.
Henk, the paper you mentioned put me on the right track. Thanks. :)
Magnus wrote:
In Jitter, Noise and Signal Integrity at High-Speed by Mike Peng Li,
Prentice Hall,
On 09/02/11 23:08, Tijd Dingen wrote:
Henk wrote:
Wavecrest uses algorithms for this and their software gives a spectrum.
They also give some info on their site.
Henk, the paper you mentioned put me on the right track. Thanks. :)
Magnus wrote:
In Jitter, Noise and Signal Integrity at
Magnus Danielson wrote:
On 09/02/11 22:14, Ed Palmer wrote:
I routinely use the 5372A to make multiple 1 sec. measurements of
frequency or time interval and then dump the results via GPIB for
analysis. Standard stuff for either the 5370 or 5372 except as mentioned
elsewhere, these measurements
Here is a simple question: Why should I try to get an HP 5372A
(or 5371A)? What
are the benefits over the 5370A? Worth spending?
The 5370A/B is nice because its one-shot resolution is better than any other
HP/Agilent counter, prior to the release of the 532xxA models a few months
ago. Also,
From a news release issued by the FCC today:
The FCC Enforcement Bureau today announced new efforts to clamp down
on the marketing, sale, and use of illegal cellphone and GPS jamming devices.
See http://www:fcc.gov
Best regards,
Charles
___
Well, isn't that just so SPECIAL!
I'm sure terrorists and other bad guys will comply fully. This makes about
as much sense as ECAP to stop snooping on cell calls.
YMMV,
-John
==
From a news release issued by the FCC today:
The FCC Enforcement Bureau today announced new
On Wed, Feb 9, 2011 at 8:23 PM, Charles P. Steinmetz
charles_steinm...@lavabit.com wrote:
From a news release issued by the FCC today:
The FCC Enforcement Bureau today announced new efforts to clamp down on the
marketing, sale, and use of illegal cellphone and GPS jamming devices.
Why would
If you think you're being tracked by the police or
a private-eye (ie: ugly divorce!) one might think
that a GPS jammer would be to their advantage.
Buy one on e-bay and you think all is OK.
-Brian, WA1ZMS
-Original Message-
From: time-nuts-boun...@febo.com
Thanks for the comments.I did a quick check of the noise floor of the 5370b
while feeding the 10 mhz output of the tbolt to the start and stop inputs of
the 5370b with a t connector. At a tau of 10 (approx 2.5 seconds) the Allan
deviation is 1x10-11, at a tau of 100 (approx 25 seconds) it
On 2/9/11 2:08 PM, Tijd Dingen wrote:
The autocorrelation processing is O(N^2) while the DFT can be done in
O(N log N) when using FFT. As usual these can be implemented in reversed
order such that first the FFT is done to the phase jitter and auto-correlation
can be found using O(N)
On 2/9/11 5:41 PM, Chris Albertson wrote:
On Wed, Feb 9, 2011 at 8:23 PM, Charles P. Steinmetz
charles_steinm...@lavabit.com wrote:
From a news release issued by the FCC today:
The FCC Enforcement Bureau today announced new efforts to clamp down on the
marketing, sale, and use of illegal
LeCroy has a paper with a short explanation that I found useful:
http://www.lecroy.com/files/WhitePapers/WP_TechBrief_Var_of_Time.pdf
This look to me very similar to this:
http://pstca.com/sampler/index.htm
- Henry
--
ehydra.dyndns.info
___
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