well-meant advices on the forums that told me to read
the firmware and flash the beast with a better one. However, I
couldn't keep my nerve, so I purchased a Prologix adapter - which worked
instantly.
Volker
Am 10.09.2013 16:07, schrieb Bob Smither:
My apologies if this is in the archives. I
=item3cd4efb089
or
http://tinyurl.com/qbsjjmr
Has anyone here tried this? In particular, can it be made to work under Linux?
I have the Prologix unit which works great with simple PERL scripts under Linux,
but always looking for a bargain!
Thanks,
--
Bob Smither, PhD
and follow the instructions there.
Here is another one:
http://www.strikestarus.com/
--
Bob Smither, Ph.D. - Linux User 281-331-2744; fax:-4616 smit...@c-c-i.com
=
Unix IS user friendly - it's just selective about who
Volts, CD 17,000 ufd at 30 Volts, etc.
--
Bob Smither, PhD Circuit Concepts, Inc.
=
No man's life, liberty, or property are safe while the legislature
is in session.
--Mark Twain (1866
the information you need
to track the satellites in real time.
--
Bob Smither, PhD Circuit Concepts, Inc.
=
Top 10 reasons why those that love the United States should not support
.
--
=
Bob Smither, PhD Circuit Concepts, Inc.
Every election is a sort of advance auction sale of stolen goods.
-- Libertarian H.L. Mencken
smit...@c-c-i.comhttp://www.C-C-I.Com281-331-2744
Events tab has links to movies of the grid frequency during major
storms and an east coast earthquake.
--
Bob Smither, Ph.D. smit...@c-c-i.com
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On 12/06/2012 08:04 AM, Jim Lux wrote:
On 12/6/12 4:42 AM, Bob Smither wrote:
On 12/05/2012 02:32 PM, M. Simon wrote:
Do you have a link for the nifty site?
This one is not just for the west coast, but has good reporting of grid
conditions:
http://fnetpublic.utk.edu/index.html
Anyone notice this?:
https://isc.sans.edu/diary.html?nstoryid=14548
Seems a Navy NTP server claimed it was year 2000 for a while.
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To unsubscribe, go to
On 11/14/2012 10:56 AM, Bob Smither wrote:
Do Rb oscillators wear out? I have found:
snip
Thanks for all the good information! I am running my FE-5680a 24/7, and, as
suggested, have a couple of backups. At my age I should be set for life!
One last question: what category of lamps do
right? As a time-nut, do you leave your Rb oscillators on 24/7?
Thanks,
--
Bob Smither, PhD Circuit Concepts, Inc.
=
Experience hath shewn, that even under the best forms [of government]
those
Has anyone tried the fluorescent replacement LED tubes? Apparently you remove
the ballast from the fixture and power the tube from the 120V AC line.
Any chance these would reduce the noise in a lab from conventional fluorescent
tubes?
Thanks.
attachment:
client on my Android and it
shows the network time (Sprint in my case) is often as much as 2 seconds behind
UTC.
Anyone else noticed this?
Best regards,
--
=
Bob Smither, PhD Circuit Concepts
On 09/03/2012 12:00 PM, Graham / KE9H wrote:
On 9/1/2012 1:35 AM, Hal Murray wrote:
The context is using the 60 Hz line for timing.
I'm feeding 60 Hz from a wall wart transformer into a modem control signal
that the kernel PPS stuff watches. Mostly, it works as expected, but
occasionally,
the initial edge from the gate is
about 4V - which implies a Zo of about 13 ohms. A 50 ohm buffer with 4 gates
would therefore use 187 ohms series resistors.
There is an app note attached here that discusses this:
http://c-c-i.com/node/107
--
Bob Smither
On 04/17/2012 06:38 AM, Robert Atkinson wrote:
I quite like the HP 546xx series 'scopes. An analog like interface but good
DSO facilities. My regular 'scope at home is a 54645D mixed signal. Ideal for
lower speed logic/anlog circuits and 8 bit PICs. Takes up a lot less space
than a 16500x
Fellow Nutters,
A friend of mine (not on this list) wants to revive his interest in ham radio.
He lives in Friendswood, Texas (zip: 77546).
If you would be willing to help him get re-started in the hobby, please reply to
me off list and I will get you together with him.
Thanks!
--
Bob Smither
delete it.
Best regards,
--
Bob Smither, PhD Circuit Concepts, Inc.
=
If you want peace, work for justice.
If you want justice, work for freedom
,
--
=
Bob Smither, PhD Circuit Concepts, Inc.
America - born free, taxed to death ...
smit...@c-c-i.com http://www.C-C-I.Com 281-331-2744(office
WarrenS wrote:
Bob
Worked great for my long zip file, and a large. jpg
Thanks very easy to use, this will be very helpful to me.
still a little problem, It would NOT take my short .gif file unless I
falsely renamed it with a .jpg extension
Thanks Warren! Should be fixed now.
--
Bob
Bob Smither wrote:
Thanks Rob Kimberley!
And now thanks to fellow time-nut Louie Mamakos there is a copy that is search
able. Here is how he did it:
Just for grins, I ran your PDF file through Adobe Acrobat to OCR it (and
clean it up slightly). The image is still there, but the OCR'd text
Thanks Rob Kimberley!
The manual that Rob found (Technical Manual TM 5680-0211) is available here:
http://c-c-i.com/node/166
Best regards,
--
Bob Smither, PhD Circuit Concepts, Inc
redirects to: http://www.nist.gov/pml/div688/
Maybe that one will work?
--
Bob Smither, PhD Circuit Concepts, Inc.
=
Blessed is he who expects no gratitude, for he shall not be disappointed.
-- W
a pretty
good discussion of this.
--
Bob Smither, PhD Circuit Concepts, Inc.
=
Friendly relations with all nations, entangling alliances with none.
--Thomas Jefferson
J. L. Trantham wrote:
Bob,
You (and others) make a good point. The stability of a good Rb may be such
that, in a portable operation, if you are going to be there for less than 2
weeks, why bother with the GPSDRbO option. Turn it on, adjust it to your
GPSDO at home, turn it off, take it to
Joseph Gray wrote:
I'm not seeing a PPS on either of these. All I see is about 17 mV P-P
of noise that looks like a multi-stepped sine wave. I'm using a TDS
340 scope.
I can see the 1 usec, 1pps on mine, but only if I use an analog storage scope.
Although my HP54000 series scope triggers at
Bob Smither wrote:
Joseph Gray wrote:
I'm not seeing a PPS on either of these. All I see is about 17 mV P-P
of noise that looks like a multi-stepped sine wave. I'm using a TDS
340 scope.
I can see the 1 usec, 1pps on mine, but only if I use an analog storage scope.
Although my HP54000
temperature of your FE5680?
I put mine on a heat sink and the case temperature stays around 50C. Without
the heat sink it was around 60C. Does anyone know what temperature is
recommended? The 50C seems a little hot, but the unit appears to work well.
- --
Bob Smither, PhD
get a spare ...
--
Bob Smither, PhD Circuit Concepts, Inc.
=
The world is a dangerous place, not because of those who do evil, but
because of those who look on and do nothing.
-- Albert
: GROUND
PIN 3: LOCK/UNLOCK (high = unlock)
PIN 4: INPUT +5V
PIN 5: GROUND
PIN 7: OUTPUT ( 10MHz sinewave )
Pin 6 has a (weak) 1pps. Pins 8 and 9 are for the RS232 interface.
- --
Bob Smither, PhD Circuit Concepts, Inc
://c-c-i.com/image/tid/4
Most recent:
http://c-c-i.com/node/159
Hope this helps.
--
Bob Smither, PhD Circuit Concepts, Inc.
Patriotism is supporting your country all the time, and your
be accurate to sub nsec. Of course, the FE-5680A could be used
as the counter timebase :-).
On 12/28/2011 10:45 AM, Bob Smither wrote:
Chris Albertson wrote:
Just got my fe5680 yesterday. Seems to work but the fe5680 is the most
accurate reference I have. So how to test it? I plan to buy
Chris Albertson wrote:
On Thu, Dec 15, 2011 at 11:05 AM, Chuck Forsberg WA7KGX N2469R
c...@omen.com wrote:
1. Will it work on 12 volts instead of 15?
My bet is no as there is an internal regulator that likely needs headroom
2. Is the serial i/o really RS-232 or something else
There is a
Bob Camp wrote:
Hi
If you dig into the circuit, the resolution of the DDS is indeed 7x10^-13 per
LSB.
Bob
Thanks for the confirmation.
On Dec 9, 2011, at 9:51 PM, Bob Smither wrote:
Bob Smither wrote:
snip
My documentation states that the full range of adjustment is:
7f ff ff ff
alex mclaggan wrote:
Like many of you, I have seen these advertised on Ebay at good prices.
Also, like many of you, I am confused about the 'programmability' and
connections.
Many of them advertise these connections:-
PIN 1: INPUT +15V to +18V
PIN 2: GROUND
PIN 3: LOCK/UNLOCK (high = unlock)
/
--
=
Bob Smither, PhD Circuit Concepts, Inc.
The purpose of government is to rein in the rights of the people.
-- Bill Clinton, President of the United States
smit...@c-c-i.comhttp://www.C-C-I.Com281-331-2744
Bob Smither wrote:
Chuck Forsberg WA7KGX N2469R wrote:
The price seems reasonable, esp. with free shipping.
Does anyone have experience with these?
Is the circuit board included?
I could not resist at $40.00 delivered. Mine has been running for a
couple of weeks, but my measurements have
Bob Smither wrote:
snip
My documentation states that the full range of adjustment is:
7f ff ff ff = +383 Hz
80 00 00 00 = -383 Hz
This scale factor is clearly wrong - using it and applying an appropriate
correction changes the frequency way too much.
From:
http://article.gmane.org
,
--
=
Bob Smither, PhD Circuit Concepts, Inc.
America - born free, taxed to death ...
smit...@c-c-i.com http://www.C-C-I.Com 281-331-2744(office
this.
--
=
Bob Smither, PhD Circuit Concepts, Inc.
I've come to realize that protecting freedom of choice in our everyday
lives is essential to maintaining a healthy civil society.
-- George McGovern
smit...@c-c-i.comhttp
the signal out of the Ref Tek has
the stated jitter. Of course, for the application intended, 2 usec of jitter is
not significant.
I am using this 1 PPS to monitor a precise crystal oscillator, but I have to do
some serious averaging.
--
Bob Smither, PhD Circuit
John Miles wrote:
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-
boun...@febo.com] On Behalf Of Bob Smither
Sent: Sunday, November 13, 2011 6:01 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] PicPlot GPIB to RS-232
Hi List,
Does
Hi List,
Does anyone have experience with this GPIB to RS-232 converter:
http://www.webalice.it/hotwater/PicPlot.htm
Thanks,
--
Bob Smither, PhD Circuit Concepts, Inc.
=
If you
Ulrich Bangert wrote:
Fellow time nuts,
does anyone of you have available the specs of one of the the following
transistors?
1) PT5744
2) ENI5744
3) TRW201
Is this what you need:
http://www.electronicsurplus.com/item/131847/
I could not find any specs.
Hope this helps.
attachment:
, but then show the error
message. A Reset returns it to normal operaion.
I could not find a list of the error codes in the manuals that I have.
Does anyone know what my 5370B is trying to tell me?
Thanks!
--
Bob Smither, Ph.D. - Linux User 281-331-2744; fax:-4616 smit...@c-c-i.com
are not hard to find. From a service manual I found:
3-22. Error messages
Error 2 - Data out of range (overrange).
I have a service manual, but could not find the errors listing in it (it
is a scan, not searchable).
Thanks to all who identified the error for me.
--
Bob Smither, PhD
and
pablum. http://arxiv.org/abs/1110.2685
and the original one in a more readable form:
http://dvice.com/archives/2011/10/speedy-neutrino.php
--
Bob Smither, PhD Circuit Concepts, Inc
://en.wikipedia.org/wiki/Private_network
--
Bob Smither, Ph.D. smit...@c-c-i.com
==
The most potent weapon of the oppressor is the mind of the
oppressed. - Steven Biko
,
--
===
Bob Smither, PhDb...@smither.net
A flag you can burn ... is the only kind worth dying for.
===
attachment
or clip lead for a fraction of a second.)
:-). I actually have a SPDT switch that I can move one of the
counter decode taps with and slew the edge with some control.
snip
Thanks!
--
Bob Smither, PhD Circuit Concepts, Inc
time interval)
between the pulse pair.
Is this normal behavior? Is there a setup that I am missing to make it
do what I want?
Thanks for any insight you might give me!
Best regards,
--
Bob Smither, Ph.D. smit...@c-c-i.com
is limited. Within the precision (~10E-8) that
I have I could not see any difference in the oscillator frequency.
Thanks,
Bob Smither
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the vacuum tube half. The other part of the
instrument, in a separate compartment, has a precision 40 step
attenuator with a 10^6 / 1 range (300 Volts to 300 uVolts) which I will
certainly keep.
Best regards,
--
=
Bob Smither, Ph.D
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