If you didn´t started yet, you may consider the PSoC series of Cypress
semiconductors. They contain digital and analog resources within the chip,
simplifying the hardware design – and hardware changes.
The new design, PsoC 5, is based on the ARM architecture, up to 256KB code
and 64kB data,
Hi Clive,
The PCI card was not made by HP. see
http://control.etfbl.net/mjerenja/pci20428w.pdf for the manual. It's a
multi-purpose card so you need to know which inputs (or outputs) are used. The
HP system description may help. Otherwise you will have to get someone with the
adaptor to do
The link didn't work, so I searched for PCI20428 and found this:
http://www.bedogmbh.de/seite5010.htm (scroll down to find the card)
Worst case you can buy a break-out box:
http://www.bedogmbh.de/seite1412.php
http://www.bedogmbh.de/pdf/22101035.pdf
I'm not affiliated with them.
Recently I saw
FWIW, if you're looking for a cheap, very capable AVR dev board. i've
had very good success with the Teensy. You can use AVR-GCC or
assembler but it has an Arduino compatibility layer if thats your
thing.
http://pjrc.com/teensy/index.html
they're cheap and easy to work with, US made, and have
Sorry, I purchased the adapter for a system we were putting together.
Agilent still has some for $500, a bit extravagant for my tastes.
The interface board is made by Intelligent Instrumentation in AZ.
The license for the 5500 is based on the serial number of the 70420A and is
a lifetime license
Hi Jim:
It may not be a good idea to adjust the watch so that the frequency is
spot on at the time the adjustment is made.
A better idea may be to wear the watch for a week and note the
fractional time error then adjust the frequency so the offset matches
the error.
Have Fun,
Brooke Clarke
I'm a retired electronics tech and computer programmer. I have a pretty
decently equipped shop for almost all of my projects and experiments.
However, my time and frequency equipment is a bit long in the tooth. I have
a couple old HP 5328A counters (commercial version; not the military
I suspect that this question will lead to a discussion of Dual Mixers but as
far as the counter question goes, I would recommend you consider an HP
5370B.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on
Behalf Of Dave M
Sent: Wednesday,
On Wed, Dec 15, 2010 at 8:15 AM, Josef Kölbl
josef.koe...@fh-deggendorf.dewrote:
Bob,
yes, building a TDC/TAC is not a problem.
Thanks.
Josef
We have been asked to develop a TDC card in FMC (VITA 57) form factor. In
principle we plan to use ACAM's TDC-GPX, but our specs are much more
OK, time-nuts, here's the gauntlet. can't we generate a design for a
PC-based FPGA or chip setup that would be generally useful as a counter?
We've seen thorough discussions about trigger jitter, which IMHO is the
fundamental problem. And isn't the PIC2 Time base from 10 MHz standard,
all else
Hello Dave,
Others will have better suggestions for the time interval measurement
equipment.
My suggestion is to consider the Prologix GPIB to USB adapter for ~150$
brand new stock.
I wasted some time with a NI controller and an older HP adapter before I
got the Prologix.
I never looked
Hi Dave,
On 12/15/2010 08:55 PM, Dave M wrote:
I'm a retired electronics tech and computer programmer. I have a pretty
decently equipped shop for almost all of my projects and experiments.
However, my time and frequency equipment is a bit long in the tooth. I have
a couple old HP 5328A
On 12/15/2010 08:13 AM, Josef Kölbl wrote:
Magnus,
with regard to your questions:
measurement rate = 1 kHz
rms jitter = 10 ps
linearity better 3 ps
resolution of 1 ps is the minimum differential measurement which can be
made (ie granularity).
Thanks, this makes your requirements much clearer.
Hi,
How good can be a Modulation Analyzer (such as the RS FAM, which I happen
to have one) for measuring phase noise?
Since it measures phase modulation, it should be able to somehow measure
phase noise, right?. Assuming it is using a low noise reference, how useful
is it for roughly
Hi Brooke,
I've adjusted the watch as best I can within the limitations of the trimmer.
The waveform was drifting 10 microseconds (slow) in about 20 seconds and so
this should come out to 1 second in 23 days.
I have now set the watch accurately and will follow it's progress. I plan to
see how
On Wed, Dec 15, 2010 at 10:49 PM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
...
http://www.ohwr.org/projects/fmc-tdc/wiki
Hmm. How do you intend to discriminate short pulses? It needs to be done in
a way that it does not significantly impairs on the timing measurement.
The TDC
Just finished editing 25 papers on process control for FDA (Food
and Drug Administration) regulated industries, so here are a few
reflexive neuron firings.
The FDA requires that the user requirements be captured first, in
a way that can be understood by both the user and the vendor of
the
I just went thru a similar process and recently acquired a HP 5370B (my best
prior counter was also a HP 5328.) I pondered some of the other choices such
as
the HP 5334 but decided to jump ahead to the HP 5370B. Also thanks again for
the advice from members of the list and I found lost of
and follow the instructions there.
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kyrrin (at) bluefeathertech do/t c
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Quid Malmborg
there.
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On Wed, Dec 15, 2010 at 6:23 PM, Bruce Lane kyr...@bluefeathertech.com wrote:
. I'll be learning both C and AVR assembler as I go along, but the
way I learn best is to actually DO something with programming ...
I agree with the last part. Learn by doing some real project. But
no
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Bruce Lane
Magnus Danielson wrote:
On 12/15/2010 08:13 AM, Josef Kölbl wrote:
Magnus,
with regard to your questions:
measurement rate = 1 kHz
rms jitter = 10 ps
linearity better 3 ps
resolution of 1 ps is the minimum differential measurement which can be
made (ie granularity).
Thanks, this makes your
there.
__ Information from ESET NOD32 Antivirus, version of virus
signature database 5706 (20101215) __
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner Head Hardware Heavy,
Blue Feather Technologies -- http
I've seen several posts that mention the 5370 counter. Certainly looks
like a capable instrument. I'll be on the lookout for one that is in
reasonably good condition and WORKS. I downloaded the NIST pub that you
mentioned, and with the cold days and colder nights, I'll have lots of time
to
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kyrrin (at) bluefeathertech do/t c=o=m
Quid Malmborg in Plano
I asked the same question of this list a number of years back, took a few
different routes and ended up with precisely what has been suggested here:
HP 5370B
Prologix GPIB-USB
And an HP 3325B function generator to round it all out nicely.
Also, if ever asked by the financial controller *why* you
Dave: the Prologix interface can be used as an rs232 device. In that way,
a robot basic program can be written to control GPIB devices. I like Robot
Basic because it is has no connections to .net or any of the other
microsoft stuff, AFIK uses no Registry either.. I put the whole package in
a
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