I should have been more direct.
What does a charged flash capacitor have to do with safety concerns
for low voltage batteries touching the tongue?
You can have the last word. It's time I moved on.
Bill Hawkins
-Original Message-
From: J. Forster
Sent: Monday, November 28, 2011 10:28
Hi All, Risking opening a potential can of worms, has anyone have a specs
roundup of GPSDO?
Ideally, Maximums of Phase noise, Jitter, accuracy...
Many thanks,
Mark
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Searching on our favorite auction site for a not time or frequency related
project I ran across a Bluetooth adapter 190527209620 and 190508188703.
After checking with some of you, smarter than me, I am convinced this module
will work as a Tbolt interface, eliminating that pesky cable and
I remember one tasting a battery on my tongue.
No shock, but a really nasty, bitter taste.
Not recommended.
--
Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc The High Reliability Software
10255
ma...@non-stop.com.au said:
Hi All, Risking opening a potential can of worms, has anyone have a specs
roundup of GPSDO?
Ideally, Maximums of Phase noise, Jitter, accuracy...
One of the variables is the quality of the antenna, both position and loss in
the cable.
--
These are my
Moin,
The recent thread on SDR GPS receivers lead me to think again about
a dual frequency GPS receiver design. But now something crossed my
feable mind that i havent seen before: When processing the L1 and L2
frquencies, they have to be seperated quite early in the process,
maybe even before the
A long-time data collection? I can test an HP58503A (I think it is the
Z3801A), I have the Z3815A and the TBolt. Of course I need time to test...
On Tue, Nov 29, 2011 at 10:37 AM, Hal Murray hmur...@megapathdsl.netwrote:
ma...@non-stop.com.au said:
Hi All, Risking opening a potential can of
Folks,
I have received the following:
___
NOTIFICATION OF GPS JAMMING EXERCISES
RAF SPADEADAM, CUMBRIA, MARCH 2012
Dates: Between the 5th of March to the 9th of March 2012 inclusive.
Times: 0800 -1800 GMT.
Location of MULTIPLE jammers: based
Hi Bert,
About a year ago I bought a packaged RS-232 to Bluetooth adaptor on ebay (about
1/20 the cost of an apparently identical device from a professional solution
provider). Looks just a 9 way D plug and shell with an antenna were the cable
normally goes. Plugged it into the front of my
Le 29/11/2011 10:08, Mark C. Stephens a écrit :
Hi All, Risking opening a potential can of worms, has anyone have a specs
roundup of GPSDO?
Ideally, Maximums of Phase noise, Jitter, accuracy...
lots of great stuff at leapsecond.com
___
time-nuts
FPGA time interval counter? With an analog interpolator? No? Then, at most,
you will get a nS resolution. I have a 2.5nS resolution TIC with 100MHz
clock using four phases from the Xilinx DCM in a Spartan3.
On Tue, Nov 29, 2011 at 1:23 AM, Michael Malloy mech...@gmail.com wrote:
Ok great thank
Hello,
How to use Prologix GPIB-USB controller with Mathematica on a Mac, that is the
question. Does the Prologix have a name so that I can write: Open[Prologix
GPIB-USB] ?
regards,
Henk
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Yes, you should start first the utilities included with the Prologix
package: there you will see the name assigned to the USB/GPIB resource and
then use it with your application. I have done that way with the Agilent
82357B (at work) and the Tektronix AD007 (at home but the AD007 is a
networked
Hello, TimeNutters--
I have heard of the problem of needing to unplug
a T-bolt before booting up the (Windows) computer
but I have never seen that problem myself. I have
had a T-bolt running on several different desktops
and laptops and never experienced it. I do recall
that there was a fix
Hello, TimeNutters--
I have used the tip-of-the-tongue test for determining
the state of charge of batteries for many years when
my bench meters are elsewhere. The strength of the
bitter taste is proportional to the voltage and I have gotten
pretty good at estimating the charge condition of the
Probably related to psychomouse, which I've seen on USB serial ports with
NMEA devices attached.
What happens in that case is that windows does a device discovery and on
hearing the M in things like GPRMC, it decides to install a microsoft
ballpoint mouse driver which immediately starts
So you wouldn't advise it with an Eveready #497 battery? VVBG
Even with that one I can't imagine getting enough current across the heart to
matter.
There is more than one reason that defibrillators use such large paddles placed
across the chest cavity.
Still, I value the functionality of my
Usually you'll see the mouse cursor jumping all over.
When that happens, unplug the Thunderbolt serial cable. Mouse cursor
should stabilize. Then go in under Device Manager and look for a
Microsoft serial mouse. You want to disable it, not uninstall.
That should fix it.
There is a Windows
Hello, TimeNutters--
I have heard of the problem of needing to unplug
a T-bolt before booting up the (Windows) computer
but I have never seen that problem myself. I have
had a T-bolt running on several different desktops
and laptops and never experienced it. I do recall
that there was a fix
Bert,
There's a very nice way to separate diurnal thermal sensitivity from long
term ageing. It applies equally well to Rb sources as to OCXOs, which is
where I've used it.
What you do is set up to make frequency observations against a more stable
reference (of course in this case a GPSDO or
That sure sounds like Psychomouse..
I've never seen it happen except on USB serial ports. Apparently when they
enumerate, windows tries to figure out what sort of device might be connected
beyond the port, makes the wrong diagnosis, and all hell breaks loose.
As a teenager I had some experience with tongues and electricity. One was
actually lips I'd demonstrate the slight tingle from a 1.5V AA cell between the
lips, then hand my victim a similar sized 22.5V photoflash battery!
On an other occasion I tried to strip a length of bell wire / zip-cord
Murray
Thank you for the info. It would how ever tie up equipment which I want to
use for other projects. I am only looking at the FE5680A once a week and
since we have right now what we call Chamber of Commerce weather the AC is
most the time off. Temperature control will be a must any way,
Hi Charles,
Thanks very much for the information on the pinout of the TOD connector
on the TS2700.
I verified the PPS signal between pins 6 and 1. It's duration and voltage
matches your report. I compared the timing of the PPS signal with the PPS
of two synchronized thunderbolts.
Interesting,
It could be a 'taste' thing. Eveready tastes better than Duracell?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of David VanHorn
Sent: Tuesday, November 29, 2011 10:26 AM
To: Discussion of precise time and frequency measurement
Google it. :)
From: time-nuts-boun...@febo.com [time-nuts-boun...@febo.com] On Behalf Of J.
L. Trantham [jlt...@att.net]
Sent: Tuesday, November 29, 2011 3:58 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Tongue
On 24/11/11 12:19, Poul-Henning Kamp wrote:
Has any of you played with this:
http://www.sparkfun.com/products/8238
I have. I managed to log data, write code to use FFT correlation search
and then lock-up to a good strong bird and decode the sub-code.
One has to look in a few
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On 11/29/11 3:38 PM, David VanHorn wrote:
Google it. :)
From: time-nuts-boun...@febo.com [time-nuts-boun...@febo.com] On Behalf Of J.
L. Trantham [jlt...@att.net]
Sent: Tuesday, November 29, 2011 3:58 PM
To: 'Discussion of precise time and frequency
Happens with traditional serial ports, too.
On Tue, Nov 29, 2011 at 12:53 PM, David VanHorn
d.vanh...@elec-solutions.com wrote:
That sure sounds like Psychomouse..
I've never seen it happen except on USB serial ports. Apparently when they
enumerate, windows tries to figure out what sort of
Assuming it's just tracking the CDMA pilots, the 1PPS output is likely
not aligned with UTC. The problem is that the pilot channel is just a
PN sequence with no modulating data - so when you lock to it you can
know that your local clock is 19200Hz * 64 chips/bit (1.228MHz) - but
that's all you
Not with the Compaq 486 antique I use. Sometimes progress shows we are too
smart !!
73, Dick, W1KSZ
-Original Message-
From: Justin Pinnix jus...@fuzzythinking.com
Sent: Nov 29, 2011 7:03 PM
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Subject: Re:
Assuming it's just tracking the CDMA pilots, the 1PPS output is likely
not aligned with UTC. The problem is that the pilot channel is just a
PN sequence with no modulating data - so when you lock to it you can
know that your local clock is 19200Hz * 64 chips/bit (1.228MHz) - but
that's all you
I think they track both the CDMA pilot and sync channels. The latter
channel sends a message which tells the phone about the cell, and
gives gives the phone enough information to figure out the time of day.
I'm pretty sure CDMA phones have to know what time it is before they
register with the
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