All,
I've been on the sidelines of being a time nut for a while now and
I'm working on getting back into things. Before I drifted away from my
hobbies, I remember the FE-5680's being around, but I didn't know much
about them and was more interested in GPSDO's. I think I'd like to help
kick
On 1/21/12 6:21 PM, Chris Albertson wrote:
There is another company that can do good quality work. BNP Laser,
does laser engraging. It is not as nice as the routed paannels but
they only charge 50 cents per square inch for plastic and a little
more for aluminum. You get a very thin engraved s
John Beale was nice enough to convince me to clean up and release the
source code I've been using to plot data from undocumented FE-5680
serial commands. It builds cleanly on linux and cygwin at
least. Don't forget to link with the rt libs ("gcc fe5680_logger.cpp
-lrt"). Let me know if you h
Hi again:
Sorry sent too soon.
The time constant of the loop is L/R. By increasing R the loop runs faster.
Western Union ran the clocks from 200 Volts with a dropping resistor to get the
desired current.
When driven form say 12 Volts the clock response is sluggish, but when driven from higher
On Sat, Jan 21, 2012 at 3:57 PM, Paul F. Sehorne wrote:
> Good that you pointed that out to me. I ran the test again. The
> voltage at the power supply terminals never dropped below 15.25 vdc with up
> to 3 amp load applied. When will I learn... darn those clip leads got me...
> again.
Chu
Hi Jim:
There are a number of options.
Ken's clock clinic sells what appears to be a No. 6 Battery that has a synchronization function for the Western Union
clocks.
But the problem with it and the drivers for slave clocks is that they use
fairly low voltage circuitry.
Stock Tickers and Telet
There is another company that can do good quality work. BNP Laser,
does laser engraging. It is not as nice as the routed paannels but
they only charge 50 cents per square inch for plastic and a little
more for aluminum. You get a very thin engraved sheet that can be
attached using double sided
Exellent intel, thanks! The face has a penciled legend "I C Depot" which I
suppose stands for Illinois Central, the railroad. But I would think mine works
the same way as all the others. The coil holds down a follower against a cam,
so the :59:59 thing makes sense. I will check this out by just
I've used Front Panel Express a couple of times. The software is pretty
easy to use. I've done rectangular, circular, "D" holes without
problem. Last fall I finally put my David Partridge divider board in a
surplus extruded box with end panels that weren't usable as-is. It cost
just over $5
I use a super permanent ink sharpie and tell anyone who asks that my 4
yo granddaughter did it...
:-)
Charles P. Steinmetz
> I'm tired of setting up silkscreening for one-off or small lot
> projects, and am looking for new ways to neatly label panels
> (generally painted metal, sometimes bare meta
Google "water slide decals" for everything you want to know and need... there
will also be links for rub-on decals.
And check out tagopappadecals.com for info and supplies for making water-slide
decals (like used on model cars and airplanes). They can also make decals for
you.
Good that you pointed that out to me. I ran the test again. The
voltage at the power supply terminals never dropped below 15.25 vdc with
up to 3 amp load applied. When will I learn... darn those clip leads
got me... again.
On 1/21/2012 5:34 PM, David wrote:
The total regulation specific
Charles,
You could consider a company called Front Panel Express at
http://www.frontpanelexpress.com/
They have free software just like the PCB community but aimed at making panels
and doing engraving. I realize this is a bit over the top in most cases, but it
may come in handy at some time. L
I'll have to set up the test again and measure voltage drop across the
leads and the voltage directly at the power supply supply terminals.
On 1/21/2012 5:34 PM, David wrote:
On Sat, 21 Jan 2012 17:20:39 -0600, "Paul F. Sehorne"
wrote:
On Wed, Jan 18, 2012 at 6:25 PM, Chris Albertson
wrote:
On Sat, 21 Jan 2012 17:20:39 -0600, "Paul F. Sehorne"
wrote:
>On Wed, Jan 18, 2012 at 6:25 PM, Chris Albertson
>wrote:
What I bought is a 15V open frame supply from allelectronics.com for
$11.50. It turned out to be a very high quality power supply (Digikey
has the same unit for
On Wed, Jan 18, 2012 at 6:25 PM, Chris Albertson
wrote:
What I bought is a 15V open frame supply from allelectronics.com for
$11.50. It turned out to be a very high quality power supply (Digikey
has the same unit for almost $40) This PS does not drop volts even
with the line input and load we
I layout the design I want (autocad) and print it reversed 1:1 on
overhead projector film. Then I cut and mount it printed side down
with 3M Super 77 spray adhesive. The mylar film is very tough and
resistant to solvents. I use an ink jet but a laser printer should
work as well.
A similar proce
There are a couple of products you should look at:
3M made something called ScotchCal. I think the line has been sold, but is
still available.
Also, the MetalPhoto process can be done in a home lab.
I also think Staples can do it fairly cheaply from your 'puter files.
-John
===
>
I'm tired of setting up silkscreening for one-off or small lot
projects, and am looking for new ways to neatly label panels
(generally painted metal, sometimes bare metal or
plastic). Preferably, something that can be done on-premises without
needing to send graphics out and wait for delivery.
> > Do you have some experience with TimeLab connected with a TIC
> HP53132A?
> > My trouble is as follow:
> >
> > using the default setup and acquiring for 1 hour, I can see on display
the
> > graph vary (as magnitude)every 1 second count, like the event counter
> each
> > second up to 3600,but th
This is a phase plot of my number two 5680a vs Thunderbolt.
The X axis is in seconds, Y is phase difference measured by
a Racal-Dana 1992 counter with GPIB interface. The big spikes
are markers representing human interaction, typically changing
the frequency offset command.
I calculate the daily
Magnus,
> The end result will be that the instrument limit slope hits the level of the
> stable source much earlier.
Can you elaborate this claim a bit more? I Think I do not understand it in the
correct way.
> It's more of a practical limitation of getting all those readouts that I
> wonder
On 01/20/2012 02:54 PM, Ulrich Bangert wrote:
Bob,
~2x10^-10 you can do this with a good frequency counter, no
mixers needed. ~2x10^-11 you can do this with a very good
/hard to find / expensive frequency counter. 1.0x10^-11
pretty easy, nothing very fancy required for a single mixer
approach.
Jim,
If your Western Union clock is similar to the type used in broadcasting,
you might want a setting pulse that starts at 59:59 and ends at 00:00 . The
reason is that at 59:59 the magnet pulls the second hand to the 12 o'clock
position and releases it on the hour. The one-second differe
National GPIB
thanks,
Luciano
--
Luciano P. S. Paramithiotti
IZ5JHJ
- Original Message
From: Azelio Boriani
To: Timeok , Discussion of precise time and frequency
measurement
Subject: Re: [time-nuts] TimeLab and HP53132A
Date: Jan 21, 2012 03:41 PM
> Serial port communication,
Serial port communication, GPIB or what else?
On Sat, Jan 21, 2012 at 3:22 PM, Timeok wrote:
> Hi all,
>
> Do you have some experience with TimeLab connected with a TIC HP53132A?
> My trouble is as follow:
>
> using the default setup and acquiring for 1 hour, I can see on display the
> graph var
Hi all,
Do you have some experience with TimeLab connected with a TIC HP53132A?
My trouble is as follow:
using the default setup and acquiring for 1 hour, I can see on display the
graph vary (as magnitude)every 1 second count, like the event counter each
second up to 3600,but the x (time) display
considering how important temperature is to the frequency accuracy I would
only consider fan cooling. For less than $ 10 you can have a system that
will hold the temperature at 43 C. The fan is very quit. To get best
performance I would cover all sides except the bottom plate with foam. I hav
This strikes me as an untapped market for chip-scale atomic clocks.
-RL
---
Robert Lutwak | Symmetricom®, Inc.
Chief Scientist
34 Tozer Road, Beverly, MA 01915
Direct: 978.232.1461 | Cell: 339.927.7896
rlut...@symmetricom.com | www.symmetricom.com
Symmetricom. Leading the world in precise t
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