, but the random frequency adjustments
by the networks and the switching between network and local station
color burst reference clocks during local programming insertion caused
us to abandon this project. This was about 7 years before I started at
Tektronix.
--
Bill Byrom N5BB
On Fri, Mar 20, 2015
). The analog interpolation
circuit uses a constant current charging a capacitor with a sampler and
A/D converter. Counting a 100 MHz signal, this provides 12 digits of
resolution per second of measurement interval.
--
Bill Byrom N5BB
On Wed, Mar 18, 2015, at 05:49 PM, James via time-nuts wrote:
Hi
will be able to get this to work with the right configuration of
termination character and talk/listen turnaround.
--
Bill Byrom N5BB
On Sat, Mar 21, 2015, at 09:24 PM, Luke Mester wrote:
I recently bought a HP5335A counter and have some questions about
operating the instrument with GPIB.
I
going on without hacking it from the basic
bits? Would really like to solve this problem.
Failing that, does anyone want them?
Have the matching L105A RB boxes, which fire up and produce 15 MHz. Also
female BNC to male SMA adapters.
Many pictures available.
Thanks for any help.
Bill Hawkins
Brooke,
It's been my experience that local daylight time change criteria are
varied and fluid.
How would a LORAN (or GPS) transmitter set the DST bit for everybody?
The leap second bit would be useful world-wide.
Bill Hawkins
-Original Message-
From: Brooke Clarke
Sent: Friday, March
. It
should be possible to use linear interpolation for the effect of
acceleration during powered flight, since f=ma is a first order
equation.
Bill Hawkins
-Original Message-
From: Bob Camp
Sent: Saturday, March 28, 2015 6:22 PM
The point being that, to even get acceleration into the picture, you
to make it work, as the mixer was
in the base of the antenna.
Bill Hawkins
-Original Message-
From: Tim Shoppa
Sent: Wednesday, February 25, 2015 7:56 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] No GPS satellites
Yes, the XL-DC and other Truetime models
be interesting to see how the daily load averages vary from
region to region.
Bill Hawkins
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to external temperature changes, called load disturbances.
Hope this was of some use.
Bill Hawkins
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to do with a rocket was 1959,
with an Aerobee-Hi launched from White Sands, NM. We used Doppler to get
altitude for upper air density measurement. The rocket went off course
horizontally (determined by radar) and was destroyed before it crossed
the border.
Bill Hawkins
stopwatch runs at 40BPS.
Bill Beam
NL7F
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accuracy with low jitter (a couple of ps
RMS jitter in these older products).
* The voltage measurement range is usually a few hundred millivolts
peak-peak, while the damage level is at around 3 volts.
--
Bill Byrom N5BB
On Fri, Apr 24, 2015, at 10:42 PM, Ivan Cousins wrote:
Since I
by.
Or you could take a picture of both clocks, wait some minutes and take
another picture.
Simultaneous observation is unlikely, because it takes time to move the
eye's focus from one clock to the other.
Bill Hawkins
-Original Message-
From: Chris Albertson
Sent: Sunday, April 19, 2015
is required. So is some
discussion of the application with the manufacturer.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex
Pummer
Sent: Thursday, April 30, 2015 12:56 PM
To: Discussion of precise time and frequency measurement
Subject: Re
as the TrueTime GOES receiver.
Antenna and converter will be hard to find, as they were probably junked
separately. I would not expect the receiver to be set up by changing
some dip switches.
Now, if someone had the RF skills to build a GHz to MHz converter, it
might work.
Bill Hawkins
much
higher accuracy and removes most of the ambiguity of multiple
reflections. It also allows S-parameters to be extracted and SPICE
models to be verified. This software isn't free - we have many more
software engineers than hardware engineers these days!
--
Bill Byrom N5BB
On Sun, May 3, 2015
version, not the newer ones.
Any clues to documentation appreciated.
Bill Hawkins
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Did the pictures have to be in SVG format?
Is this only a problem for those who routinely use SVG?
-Original Message-
From: Poul-Henning Kamp
Sent: Saturday, May 09, 2015 7:16 AM
I spent some time capturing some data today.
The measurements is from my $20 loop-antenna in the attic,
how to use it.
I'm sorry I expressed my annoyance, but I'm fighting an unknown
infection, and that makes me testy.
If someone could send me a reliable link to download SVG, I could try it
after a full system backup. That's all extra work, but there's got to
be a pony in there somewhere.
Bill
IIRC, automobile driver's stopping distance includes 200 msec to process
the need to stop.
Our wetware is not particularly fast.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris
Albertson
Sent: Saturday, April 18, 2015 12:51 AM
To: t
between right and left ear will be perceived as sound
coming from left or right,
and not perceived as a time difference.
Bill Beam
NL7F
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$195 for it? The catch is, the buyer has to supply the 96 VDC
in batteries.
Please write for details to b...@iaxs.net.
Bill Hawkins
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The double oven?
Sent from mobile
On Jun 25, 2015, at 4:25 PM, Rhys D heyr...@gmail.com wrote:
According to the brochure, they are only $750 new.
Or am I missing something here?
R
On 26 June 2015 at 03:30, Mark Spencer m...@alignedsolutions.com wrote:
Hi I'm wondering if there is
does not affect the other.
The star ground may jump around, but all circuits are affected equally.
Like your subject line. Better than 'strings,' I'm afraid.
Bill Hawkins
-Original Message-
From: Neil Schroeder
Sent: Wednesday, June 24, 2015 4:55 PM
-- % - (snip)
Main question
and electromagnetic radiation. But that's more than you
asked for. :)
--
Bill Byrom N5BB
On Mon, Jun 22, 2015, at 06:56 PM, Bob kb8tq wrote:
Hi
The problem with coils (inductors) is that they are indeed on the “other
side”
of the physics / electrical engineering divide. They are not unique
was powered by
a TM500 mainframe. A number of other companies produced modules which
were powered by TM500 mainframes.
--
Bill Byrom N5BB
On Wed, Jun 17, 2015, at 09:07 AM, Robert Gilchrist Huenemann wrote:
Thank you for your comments. I was not aware of the TVC501. I have
ordered
a copy
inputs. It was a rather specialized product, and I don't think we sold
many of them. In 1995 we discontinued nearly the entire TM500/TM5000
line. Some of these products were sold by Tegam for a few years.
--
Bill Byrom N5BB
On Tue, Jun 16, 2015, at 05:17 PM, Richard (Rick) Karlquist wrote
and UTC time is correct for humans.
ps. am I replying the way I'm supposed to with a new email and subject?
Yes. Thank you. The archives will be better for it.
Kind regards,
Bill Hawkins
P.S. It's true that the time difference changes very little (ignoring
DST, which cancels out) per year
Pysolar
Sent from mobile
On Jul 4, 2015, at 8:13 AM, Jim Lux jim...@earthlink.net wrote:
I've got a project I'm working on to make a sophisticated sundial with moving
mirrors. I've got a batch of Arduinos that move the mirrors to the
appropriate places, given the current sun angle,
These are pricey but offer 5900 steps over 120 degrees. 0.02 degree per step.
At least you could try a couple. If you have many of them it would get
expensive quickly.
http://www.horizonhobby.com/ds8231-ultra-precision-servo-jrps8231
Sent from mobile
On Jul 5, 2015, at 7:46 AM, Jim Lux
with a
28 volt
3 amp supply into a mini-rack using aluminum angle. My time lab is being
downsized due to a move to senior living apartments. There's other
stuff.
Bill Hawkins
Bloomington, MN 55438
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob
Camp
Sent
a different ground, since there may be significant
current and ground drop through the ground trace or plane. Be sure to
have the covers in place so the airflow and thermal characteristics
are as HP designed.
--
Bill Byrom N5BB
On Wed, Aug 19, 2015, at 04:45 PM, Poul-Henning Kamp wrote
to commit
customs fraud, report it to us.
If the seller is faking custom forms, how do you know that anything they
say is true?
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averages/sec using a RTSA or a bitmap statistical display. Again, I'm
not trying to advertise anything in this forum but just give you a
technical answer to your question.
--
Bill Byrom N5BB
On Thu, Aug 20, 2015, at 12:12 AM, Hal Murray wrote:
What's the BNM column on that chart?
What
/SOFCalendar.aspx
And note that except for certain government tests and operations, GPS
jamming is illegal, and violations are prosecuted:
http://www.gps.gov/spectrum/jamming/
--
Bill Byrom N5BB
On Wed, Aug 19, 2015, at 03:11 AM, Hal Murray wrote:
Most/all of my GPS toys stopped working
to PM conversion sources) in
downstream amplifiers can be affected by audio frequency noise, I think
that it's very important that such noise isn't allowed to phase modulate
the desired RF signal.
--
Bill Byrom N5BB
On Mon, Jul 27, 2015, at 05:39 PM, Bob Camp wrote:
Hi
On Jul 27, 2015
.
That would soon have the clocks synchronized out of phase, provided the
mounting arrangement did not absorb too much of the pulse energy.
The situation is similar to synchronizing a TV vertical oscillator
(running a bit slow) with the received sync pulse from the broadcast
station, no?
Bill Hawkins
PM, Bill Beam wb...@gci.net wrote:
These University Of Lisbon Scientists have rediscovered a very old wheel.
Old physics: Two coupled nearly identical harmonic oscillators have two
stable states.
They will operate with relative phase = zero or 180deg. How they are
coupled is not
an issue
energy one to the other.
Regards
On Wed, 29 Jul 2015 13:44:19 -0500, Bill Hawkins wrote:
They talk about sound pulses affecting the pendulums.
Sounds more likely that the mechanical vibration transmitted through the
aluminum bar affects the escapements.
Perhaps the 'tock' side generates
I have a service manual for the 6080A/AN. The cal procedure may be the same.
Bill Reed
-Original Message-
From: John Ackermann N8UR
Sent: Tuesday, August 11, 2015 6:06 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Fluke/Gigatronics 6060 series
/meetings/rms/keydocs/2011/0518/03_manual_time_error_correction_elimination_field_trial.doc
So don't trust an AC synchronous motor clock in North America.
--
Bill Byrom N5BB
On Sun, Jul 26, 2015, at 07:08 AM, Bob Camp wrote:
Hi
That correlates quite well with data from the 1960’s before
minute and
hour cards. A few years later I had a Radio Shack LED wristwatch.
I see that 32,768 Hz crystals can now be purchased for US $0.15 each in
lots of 100.
--
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On Sun, Jul 26, 2015, at 07:08 PM, Dave Martindale wrote:
It's not just synchronous-motor clocks that use line
/real_time_system_conditions.html
His chart (with permission) is at:
http://home.earthlink.net/~schultdw/power/all.png
In this case, the time reference was given by the power company. No
cycles were counted.
Regards,
Bill Hawkins
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such as the ones you see in your
screen capture.
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Tektronix RF Application Engineer
On Thu, Jul 16, 2015, at 04:15 AM, Wolfgang DL1SKY wrote:
Hi,
I just got a used/refurbished E4437B which I wanted to use as a
all-purpose RF generator primarily for 3-4 GHz.
Unfortunately, I'm
I suggest this magazine article: Additive (residual) phase noise
measurement of amplifiers, frequency dividers, and frequency multipliers
http://www.holzworth.com/Aux_docs/PhaseNoise_Article_MWJ_Jun08.pdf
--
Bill Byrom N5BB
On Mon, Jul 13, 2015, at 02:20 AM, tim...@timeok.it wrote:
Hi
assistance from others to read a
floppy disk these days anyway! There is a small possibility that I have
some old printed TVC501 application information which didn't get
discarded during my last office move, and I will look for any such
material during our move.
--
Bill Byrom N5BB
On Sat, Jun
requests, it goes to the best
impoverished experimenter story.
Please reply directly to b...@iaxs.net, not the list.
It's been fun.
Bill Hawkins
P.S. Also have a 3335A parts unit and an Efratom FRK L rubidium pulled
from a Collins Omega navigation set, oh, and a set of the older Lucent
RFTG XO
most of
us know what happens when the boss doesn't know what the techs are
doing. In my experience, you don't get good designs if you don't know
how they are built. But then, there are people who think the Universe is
based on mathematics rather than the other way around.
Bill Hawkins
P.S. My thanks
.
I don't know of any mechanical clocks that sync once a day. IIRC,
Western Union had to send people to advance or retard the hour hand when
daylight savings time became common.
There is something about those clocks that makes a time nut want to
restore one.
Bill Hawkins
-Original Message
locked systems I contracted Dr. Gardner to conduct a course
on phase locked techniques at MSFC. This course became the basis
for his book. He gave me a signed copy.
Bill Reed
-Original Message-
From: Alexander Pummer
Sent: Friday, October 16, 2015 5:33 PM
To: Discussion of precise time
systems I contracted Dr. Gardner to conduct a course
on phase locked techniques at MSFC. This course became the basis
for his book. He gave me a signed copy.
Bill Reed
-Original Message-
From: Alexander Pummer
Sent: Friday, October 16, 2015 7:05 PM
To: Discussion of precise time
ack directly to the line. This allowed the UPS
to be replaced when its warranty ran out. Batteries lasted six years,
did not invest another $500 in them.
Good luck.
Bill Hawkins
-Original Message-
From: Chris Waldrup
Sent: Saturday, October 10, 2015 8:20 AM
To: TIme Nuts
Subject: [time-nuts]
accept that amount of time travel, follow this link:
http://www.hactrn.net/sra/vaxen.html
or Google "vaxen immortal power"
The reference to October 19, 1987, is to the first computer failure to
have a major effect on the stock market.
Enjoy, as they say
Bi
. It would be interesting to
see what's really going on.
What do other countries do? DC tie lines?
Regards,
Bill Hawkins
-Original Message-
From: Hal Murray
Sent: Friday, July 10, 2015 2:45 AM
To: time-nuts@febo.com
Cc: Hal Murray
Subject: [time-nuts] 60Hz line data
My collection recently
active.
--
Bill Byrom N5BB
On Wed, Nov 11, 2015, at 08:34 PM, Pete Lancashire wrote:
> Tektronix (long before being a division of Danaher) up to at least the
> mid
> 70's would require an EE to
> work in production. I understand some HP divisions did the same. All that
> started
to FM broadcast band
signals while eating dinner at the Denver airport and had great
difficulty in positioning the iPod and headphone cable (which acts as
the antenna) for good audio due to multipath distortion.
--
Bill Byrom N5BB
On Thu, Nov 12, 2015, at 06:19 AM, Tim Shoppa wrote:
>
time, or
adjusting by an hour for summer or winter time, then our needs for
social time can be satisfied.
I don't see the need to yank the oscillator around for social time with
a time loop.
Best regards,
Bill Hawkins
P.S. We're moving to a life care community that has no room for a time
lab
. A Jones terminal for 48 vdc and Battery
The chassis are 12 x 12 x 18 and 20 lbs.
If you have cards here is the deal.
$ 20.00 plus shipping (each). Negotiable
Contact me offline for more details.
Bill
br...@otelco.net
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) in a USPS large Fixed Rate
Priority Mail box for $18.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob
Benward
Sent: Saturday, September 05, 2015 1:19 PM
To: Time Nuts
Subject: [time-nuts] Z380XA The saga of the aging 10811
Hi All,
I would
are free from discipline and are now drifting.
So yes, the positioning aspects matter.
Disclaimer: I haven't studied RAIM (or TRAIM) enough to know exactly
what goes on, but that's the behavior I've observed.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com
--
Bill Byrom N5BB
On Sun, Sep 27, 2015, at 11:36 AM, ed breya wrote:
> I need to build an ECL divide by 3 circuit to run at about 50 MHz input.
> I know there are lots of examples out there, but I vaguely recall years
> ago I stumbled upon one or more that also provided more of a sy
, please ask for clarification. Or
do a schematic and ask for corrections.
Bill Hawkins
P.S. This will not work well for small differences between PPS 1 and 2.
It will work if the goal is 50% difference, or 90 degrees phase shift.
-Original Message-
From: Can Altineller
Sent: Wednesday
on.
This is a lot of analog circuitry, but it will operate as fast as the
parts are capable of switching and not at the whim of whatever the micro
is doing.
Hope that's useful. Probably already been done.
Bill Hawkins
-Original Message-
From: Magnus Danielson
Sent: Tuesday, September 22, 2015
It would be neat to drive one off a disciplined 16MHz synthesizer and compare.
Bill Dailey
> On Sep 25, 2015, at 1:40 PM, Jim Lux <jim...@earthlink.net> wrote:
>
> I ran 5 teensys in parallel, driven from the same Rb source for an hour..
> They track reasonably well.
The role of the diode is to break the current path to the cap
when S1 shorts the current to ground when PPS 2 occurs.
With the diode, S1 does not short the cap to ground.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex
Pummer
Sent
with proportional terms such as
PID do a better job with a linear error signal, unless the thing being
controlled (crystal frequency) is so nonlinear that the integral term
does most of the work.
Wish I could do the experiment, but no longer have a lab.
Bill Hawkins
-Original Message-
From: time-nuts
tic adjustment of
amplitude and phase flatness, as well as group delay. These models have
a wideband (25 to 165 MHz depending on option) acquisition system as
well as a narrowband (about 312 kHz) IF system, and these are
automatically aligned.
--
Bill Byrom N5BB
On Sun, Dec 20, 2015, at 04:42
Europe. ;)
--
Bill Byrom N5BB
On Sat, Dec 19, 2015, at 05:10 PM, Lizeth Norman wrote:
> That's what I said. 61.44MS/s. This thing is a fire hose.
> Saturate a usb 3.1 without much problem.
> Gotta love computing!
>
> On Sat, Dec 19, 2015 at 5:01 PM, Poul-Henning Kamp <p...@phk.f
and digital filtering delay acquired signals, so you have to
correct for the group delay in these operations.
--
Bill Byrom N5BB
On Sun, Dec 20, 2015, at 08:40 AM, Jim Lux wrote:
> Here's an interesting problem.
>
> You have a fast sampler that is collecting samples off-the-air (e.g.
!
--
Bill Byrom N5BB
On Tue, Dec 29, 2015, at 08:12 PM, Will wrote:
>
> That sure beats a BC21 that many hams (and Post Office Techs) used long
> ago.
>
> So long ago Google doesn't want to help and memory has faded over half
> a cen
path between Ft Collins CO and your location is fully
dark), since that is when the signal is strongest and tends to have a
more stable phase.
WWVB clocks can get UTC with an uncertainty of about 100 microseconds,
according to NIST: http://www.nist.gov/pml/div688/grp40/wwvb.cfm
--
Bill Byrom N5BB
If it were possible for time nuts to measure time differences to 10E-21,
could they have seen the effects of the gravity wave?
Bill Hawkins
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the
universe - well, not if mass and energy are conserved. Or did the wave
contain all of the radiated energy?
Disclaimer: My field of study was not physics.
Bill Hawkins
-Original Message-
From: Bob Stewart
Sent: Saturday, February 13, 2016 2:35 PM
Hi Tom,
Thanks for posting this. I'm
suggestions?
Bill Reed
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And on the top left, a fan-fold paper printer for the data.
Imagine handling all of that data manually instead of getting it in a
disk file.
Bill Hawkins
-Original Message-
From: Jeremy Nichols
Sent: Saturday, January 30, 2016 12:43 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts
completely. Single point ground systems are usually a good idea.
--
Bill Byrom N5BB
On Sun, Feb 28, 2016, at 12:22 PM, Adrian Godwin wrote:
> Could it be microphonic capacitors, or the crystal itself ?
> Have you got a big old heavy power supply with a buzzing transformer on
> your
rather old non-RF measurement instruments.
That oscilloscope was introduced 27 years ago and many repair parts have
not been available for many years. I own some much older Tektronix
scopes and other equipment, but don't use oscilloscopes for general
purpose RF measurements.
https://en.wikipedia.org
The ring-down is due to the combined BH ringing down from oblate to spherical
and rotateing while ringing.
The wave contains most of the lost mass/energy. There likely was also EM energy
radiated from the surrounding
BH disks, but not observed here.
Bill\
NL7F
On Sat, 13 Feb 2016 17:34:45
.
--
Bill Byrom N5BB
On Sun, Feb 14, 2016, at 02:26 PM, Paul Boven wrote:
> Hi PHK, everyone,
>
> On 2016-02-14 0:30:22, Poul-Henning Kamp wrote:
>>
>> In message <1E75A9592178425ABD11390EB725D060@pc52>, "Tom Van Baak" writes:
>>
&g
running a KS-24361 pair as stand alone units, each with its own GPS
reciever
and an LTE-Lite.
Regards
Bill, NL7F
On Tue, 16 Feb 2016 01:58:16 -0800, Hal Murray wrote:
>http://users.megapathdsl.net/~hmurray/time-nuts/GPSDO/KS-volt-2016-Feb-14.png
>The red dots are the DAC voltage.
>
.
It may be that the triple point of water does not have the certainty to
reach '0.0001C'
Disclaimer: I only worked with industrial sensors from Rosemount, Inc.
as an employee.
Bill Hawkins
-Original Message-
From: Alan Ambrose
Sent: Friday, March 11, 2016 11:42 AM
Hi,
I hope this is still
shows the illumination of the
Earth at various points in the Earth's orbit and rotation (time). For example:
http://www.time.gov/images/xearths/1S/96S.jpg
http://www.time.gov/images/xearths/23N/180N.jpg
--
Bill Byrom N5BB
On Sun, Mar 13, 2016, at 01:50 PM, James Flynn wrote:
> <jm
...@quackers.net.
Thanks, Bill
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
will be the day they make vacuum cleaners.
Or maybe Windows 10.
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, that is.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jay
Grizzard
Sent: Wednesday, April 06, 2016 8:22 PM
To: time-nuts@febo.com
Subject: [time-nuts] Building a mains frequency monitor
Since it seems to be a week for new projects
e unit price is about $299:
http://www.analog.com/media/en/technical-documentation/evaluation-documentation/310187823ADCMP572_3_80_1_2EB_0.pdf
--
Bill Byrom N5BB
On Tue, Apr 12, 2016, at 09:51 PM, Rob Sherwood. wrote:
> I have both HP and Tektronix pulse generators. Neither are
> expensi
ify that the obvious answer is the
correct one. I clearly need to be very careful about the inductance.
Thanks, Bill
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
will be the day they make vacuum cleaners.
Or maybe Windows
.
The science fair folks got enough interesting data without all that, but
the precision is not known.
The link didn't have any reference to code at all.
This is a way of looking at frequency variations with natural causes
that does not require expensive equipment, if done right.
Bill Hawkins
with industrial process control systems, anyone who
needed reliability used redundancy, and hoped that the fail-over
software would work. When safety was a concern triple redundancy was
used with 2 of 3 voting for output values.
FWIW
Bill Hawkins
-Original Message-
From: Rob Sherwood.
Sent
that with a 10 CPS bandwidth filter. A mechanical servo tuned
the heterodyne oscillator to hold 100 KC. It was a marvel of technology
at the time. Didn't use the Knights filter, though. Possibly the
heaviest converter Collins built. Had 44 tubes.
Had one once, but time passes.
Bill Hawkins
-Original
oscillators for the short time
constant accuracy that is not available from Rubidium.
Good fortune.
Bill Hawkins
-Original Message-
From: Nicolas Braud-Santoni
Sent: Sunday, April 03, 2016 5:04 PM
To: time-nuts@febo.com
Subject: [time-nuts] Advise on building a DIY GPSDO?
Hi,
I've been slowly
that is not
possible for volts, amps, and ohms. It's exciting stuff, and
correspondingly difficult.
FWIW
Bill Hawkins
-Original Message-
From: Alexander Pummer
Sent: Monday, April 04, 2016 4:49 PM
Building it cost you time and money, most likely much more than to buy,
but you gain
a significant fraction of a second per year; it's
the principle of the thing.
:-)
Bill Hawkins
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and follow the instructions there.
PPS that has enough
volts/degree to provide a useful error signal to the motor controller.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bernd
Neubig
Sent: Sunday, May 22, 2016 12:41 PM
To: 'Discussion of precise time and frequency
Note that the 3450B has an accuracy of 10E-5.
You're probably looking for something a lot better than that.
Bill Hawkins
-Original Message-
From: David
Sent: Friday, May 13, 2016 8:28 PM
On Fri, 13 May 2016 11:38:06 -0500, you wrote:
>David wrote:
>> I was thinking o
to
some value of minutes per day or other counts per period of time.
I've never really looked at Allan Deviation, but it seems to be a
statistical method for displaying variations in accuracy with time.
Perhaps ADEV is what you need.
Regards,
Bill Hawkins
-Original Message-
From: time-nuts
the diode turns of making a sharp edge. So the diode lifetime
is important in relation to input drive frequency. For a sinewave drive
the lifetime should be about 1/4 the period at the recommended drive level.
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
. There are also an
amazing number of ways to do triggering.
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
will be the day they make vacuum cleaners.
Or maybe Windows 10.
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe
or less, the reflection will
end up causing a reduced risetime or ringing at the source. Your setup
has a good source match which should keep re-reflection to a minimum, so
there shouldn't be any significant re-reflection problems.
--
Bill Byrom N5BB
(Tektronix Application Engineer)
On Sun, Apr
. Anything like that will have at least one corresponding
power monitor chip with several supply voltage inputs and the appropriate
delay.
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
will be the day they make vacuum cleaners.
Or maybe Windows 10
rs/Micro-2.html
--
Bill Byrom N5BB
On Fri, Jun 3, 2016, at 04:04 PM, cdel...@juno.com wrote:
> Well the checkout of the 106A oscillator section is going well.
>
> I ran it for 6 hours and the outer oven came down OK, will have to
> wait
> until I can do a longer attend
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