The NEC 7210 was the industry standard GPIB chip for over 20 years, I still
have a few here. If you want the spec and can't find it, I probably have it
here somewhere.
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Brian Kirby
Sent:
Hank,
You can look at the source code for my Tbolt Monitor to see how I dealt with
that. The link to the source code is in my wiki page:
http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:gps_monitor
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Neville Michie
Sent: Sunday, October 05, 2008 5:20 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TBolt Monitor
The clock displays are of two types. The
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Neville Michie
Sent: Sunday, October 05, 2008 9:25 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TBolt Monitor
Hi Didier,
a time (GPS) and date display
I suspect another reason is that even if it were adjusted, a user's
individual standard would still deviate from the NIST average standard, and
the drift would have to be accounted for anyhow, so what's the point of
attempting to mess with it and take the risk of loosing the data accumulated
so
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Rooke
Sent: Thursday, October 02, 2008 2:02 PM
To: [EMAIL PROTECTED]; Discussion of precise time and
frequency measurement
Subject: Re: [time-nuts] AC Connector On HP 5061B
2008/10/3 Brooke
Piezo Mini Wonder info is at http://www.ko4bb.com/cgi-bin/manuals.pl
Search for Piezo
Didier KO4BB
2008/9/30 Richard H McCorkle [EMAIL PROTECTED]:
Hello,
I purchased three Piezo 2920136 units and the attached file
documents what the pinouts and EFC requirements are.
Hope you find this
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bruce Griffiths
Sent: Saturday, September 13, 2008 10:48 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt Monitor (Didier Juges)
7. Provide
I have tried three models the original Trimble Bullet, the HP 58532A and
several pucks, including a nice Trimble mag-mount unit. Two of the pucks are
designed for marine use, with a decent waterproof case and mounting, but
they are in an all plastic case. There have no part number that I could
The first sentence was confusing, replace with:
I have tried several models, the original Trimble Bullet...
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges
Sent: Sunday, September 14, 2008 9:02 AM
To: [EMAIL PROTECTED
] Thunderbolt Monitor
Didier,
Any chance of the GPS Monitor which you are developing being available as a
kit?
Jeff
- Original Message -
From: Didier Juges
To: time-nuts@febo.com
Sent: Sunday, July 13, 2008 8:55 PM
Subject: [time-nuts] Thunderbolt Monitor
I have uploaded version 0.0.8
As long as the power supply is not advertised as an end item, problems like
that are not within the scope of safety agencies.
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Hal Murray
Sent: Thursday, September 11, 2008 7:24 PM
To:
Google Obfuscated code contest for fun :-)
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David C. Partridge
Sent: Friday, September 05, 2008 1:00 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] I want a
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Didier Juges
Sent: Thursday, September 04, 2008 11:24 PM
To: 'Tom Van Baak'; 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Driving clocks from 1pps
Ah, I see now
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak
Sent: Thursday, September 04, 2008 6:37 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Driving clocks from 1pps
I am in the middle of the design
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak
Sent: Thursday, September 04, 2008 11:17 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Driving clocks from 1pps
50% duty cycle is way
That's the same manual I have on my web site:
http://www.ko4bb.com/cgi-bin/manuals.pl
Search for LPRO
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bob Martinson
Sent: Monday, August 25, 2008 12:56 AM
To: Discussion of precise
I cannot answer exactly this question, but I was told by the Trimble sales
manager that somewhere along the lines (probably around 2000), the Tbolt
software was revised with the main goal of removing a lot of the lower level
settings and adjustments capabilites because too many customers were
The problem nowadays is not the storage, it's the backup software.
I have most of my important data in 4 places: two web sites, main 250 GB
hard drive and external 500GB Western Digital USB Hard Drive (highly
recommended). What I call important data is about 30 GB worth of stuff
that is typically
.
Among them was an open-source product called 'rsync.' This is the link
for it.
http://samba.anu.edu.au/rsync/
Happy tweaking.
*** REPLY SEPARATOR ***
On 22-Aug-08 at 03:30 Didier Juges wrote:
The problem nowadays is not the storage, it's
ports open, and
it's a lot more secure for your data, anyway. I don't recall
the exact magic to make rsync plus SSH work under Windows,
but I think you could use PuTTY or Teraterm to provide the
port forwarding.
John
Didier Juges wrote:
Several people pointed me to rsync. I
, Didier Juges [EMAIL PROTECTED] wrote:
I would have to upgrade to a Business package (instead of the Home
package) to have SSH, which would double the cost.
I am evaluating FTPSync. It looks like it might do the job,
thanks for
the suggestion
Depending on how comfortable you
This is for my manuals. The primary storage is the web site, the local hard
drive is the main backup and working copy, and I have a second backup on a
USB drive. I want the same content at all 3 places. I also have a second
backup web site, but I assume this one will just be a slave, updated when
That is an interesting thread. So I feel like I have to add my $0.02
I am a casual programmer. I got into programming when I had to, because it
was, at one time, the path of least resistance for something I wanted to do.
I am otherwise an EE. Today, I spend my time 50/50 doing hardware design and
are
particularly useful anymore. Then there's that one lone
16F84 PIC and it's programmer, which I think I used once.
Cheers,
Rob
KC6OOM/5
On Aug 14, 2008, at 9:51 PM, Didier Juges wrote:
I am not sure what you mean about the 8051 being goofy to
program in
C.
Aside from
I am not sure what you mean about the 8051 being goofy to program in C.
Aside from the bit variable type, the Special Function Register declarations
and the memory types (data, idata and xdata), which you only deal with one
time (when declaring variables) and which you can even ignore in many
- Original Message -
From: Didier Juges [EMAIL PROTECTED]
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Sunday, August 10, 2008 12:52 PM
Subject: Re: [time-nuts] GPS shielding by power lines?
Alan,
I don't believe you have said what type
The TB's PPS output has something like 5 ohm output impedance. It is very
desirable to terminate the coax cable with 50 ohm at the other end,
otherwise you will get endless ringing
The following web page uses the PPS output of the Thunderbolt to illustrate
ringing in a non-matched cable:
On both of my 5370As, the only way to permanently fix socket problems of
that type was to replace all the sockets with gold plated, machined pin
sockets.
On the 5370, that was easy because the boards have relatively large holes
compared to the socket pins, and there is no ground plane, so it was
Rick,
Can you explain #2?
I understand ECL has more jitter, so I understand excluding ECL based
comparators, but why excluding ALL comparators? It seems to me the
comparators allow tighter control of the threshold, so it sounds as if it
would help at very low frequencies, unless the higher 1/f
Very interesting thread.
I have been following half distractedly the thread on leap second, while
working on the firmware for my GPS Monitor. I am at version 0.1.2, and the
second line of the display is now used to display RX Mode, Disciplining
Mode, Temperature or DAC Voltage in succession, by
Reply to message 6:. .7300 de Dick
W5UFZ How are leap seconds declared?
When tvb tells them to :-)
Didier KO4BB
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To unsubscribe, go to
Problem is one period of 32768 is not a multiple of 100nS (one period of 10
MHz) so that won't work. Maybe there is a common denominator and it may be
possible to generate an average 32768 periods over one second, even though all
periods may not be equal.
Didier KO4BB
Mike S [EMAIL
Start:
NOP
NOP
NOP
...
NOP
flip_bit
NOP
NOP
NOP
...
flip_bit
JUMP Start
(details omitted for clarity)
:-)
Didier KO4BB
Mike S [EMAIL PROTECTED] wrote:
At 04:17 PM 7/23/2008, Tom Van Baak wrote...
I just prototyped this PIC algorithm and it works perfectly:
Exactly 10 MHz in gives
http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:store_position_on
_trimble_thunderbolt
Thank to John Miles for that one...
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David Ackrill
Sent: Tuesday, July 22, 2008 11:47 AM
In my unqualified opinion, Trimble did something very smart with the
Thunderbolt.
Most previous GPSDOs use a stand alone GPS receiver, with its own CPU clock,
to generate the 1PPS signal, to which a separate OCXO is servoed via PLL and
occasionaly smart software.
The basic problem I see with
Chris,
What is the 440Hz used for, other than tune instruments?
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Baragwanath,
Chris (TSG)
Sent: Friday, July 18, 2008 4:43 AM
To: time-nuts@febo.com
Subject: [time-nuts] TimeNuts Assistance
of this proposed Thunderbolt monitor
with the Noritake display will be made available through TARP
in the near future. I am sure that many of the Thunderbolts
which recently became available would benefit from such a kit.
Jeff
- Original Message -
From: Didier Juges [EMAIL PROTECTED
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Thomas A. Frank
Sent: Wednesday, July 16, 2008 11:06 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt monitor
On Jul 16, 2008, at 10:46 PM, Didier Juges wrote
I made a second version (same firmware) of the Thunderbolt monitor. This one
uses the plastic DIP version of the processor mounted on a small Radio Shack
proto board and it uses a gorgeous Noritake Vacuum Fluorescent display.
The interface between the Noritake and any ordinary LCD display is
I have uploaded version 0.0.8.
Alarms (if any) are decoded and displayed in succession on the second line
of the display, alternated with the Disciplining Status.
The archive has been fixed, there was a problem with v004. If you downloaded
it and had problems, I am sorry...
Check the Wiki for
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges
Sent: Saturday, July 12, 2008 8:50 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Double ovened 10811-60158 on ebay
My understanding of thermal regulation
Firmware version 0.0.4 is usable and has been uploaded, read the details and
download the firmware from my Wiki page:
http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:gps_monitor
Some user interface (to select which information to display) would be nice.
2 lines of 16 characters is
Well, I don't really have much time right now, but I started working on a
Monitor for the Trimble ThunderBolt (and other GPS receivers). With 3 TBs
here, it would make sense.
Here is where I am at the moment:
http://www.ko4bb.com/Timing/GPSMonitor/
The idea is to decode the TSIP packets
Found it, I'll look at it. I remember that thread now. I have been a little
preoccupied lately, hence the need for a diversion in the form of writing
software. However, it plays games with my short term memory :-)
Thanks
Didier
-Original Message-
From: [EMAIL PROTECTED]
Monitoring the crystal temperature would probably be extremely boring. I
would expect it to be absolutely stable, as far as the internal TB
temperature monitor is capable of displaying it.
Monitoring the electronics temperature is useful because it relates to the
ambient and allows you to plot
I have used Olimex also, from the US. Good quality, reasonable price and
delivery, painless transaction overall.
Only problem the last time I wanted to buy from them: they were on vacation
and they simply did not reply or acknowledge my email until 2 weeks later
when they came back... In the mean
If the cable is long enough, the discontinuities brought by using a BNC
connector should not be too much of a problem, unless you are trying to
extract the very last ounce of performance from the Thunderbolt.
A long cable will have significant attenuation, and that will absorb most of
the
No, I think it's just a vast conspiracy :-)
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Harris
Sent: Friday, July 04, 2008 9:14 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] New leap
These are still available from Tektronix, even though last time I checked,
you can buy a working Tek 2430 storage scope on eBay for less.
I have one in my TDS-210, but I would not give it up for anything (oh well,
almost anything...)
Didier KO4BB
-Original Message-
From: [EMAIL
The 9390 manual is in the GPS_Timing directory.
Considering Nigel's comment below, I have made a couple of changes to the
upload script and the manuals page so that any upload (via script of via
ftp) will show up in the Recent Upload directory. However, whatever is
uploaded via ftp will not show
The GPS-4 manual is on my web site. Search for GPS-4
http://www.ko4bb.com/cgi-bin/manuals.pl
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Scott A Sybert
Sent: Saturday, June 28, 2008 3:24 PM
To: time-nuts@febo.com
Subject:
I used a standard 0.1 spacing connector for a test and it works fine. Of
course, you would have to remember which way to plug it...
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Richard W. Solomon
Sent: Friday, June 27, 2008 12:25 PM
That's a good point. The older Prolific drivers had a nasty habit of
crashing my laptop (Win XP would not wake up) if I put it in hibernation
with the adapter plugged into the USB socket. The new drivers mostly fix the
problem. I may occasionaly have to unplug and replug the device after waking
Here is what terminating impedance does to a fast signal:
http://www.ko4bb.com/Test_Equipment/CoaxCableMatching.php
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges
Sent: Thursday, June 19, 2008 6:11 PM
To: 'Discussion
,
and I couldn't find anything on that, although I can today.
That said, thanks for maintaining your site of very
useful information.
Regards,
Peter Vince (G8ZZR, London, England)
On Sun Jun 15 20:33 , 'Didier Juges' [EMAIL PROTECTED] sent:
See
See this method which works well under XP:
http://www.ko4bb.com/cgi-bin/wiki/save.cgi?DisableSerialMouseDriver
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David C. Partridge
Sent: Sunday, June 15, 2008 1:53 PM
To: 'Discussion of
I would like to add an extra question:
How about adding an extra filter after a cheap PC power supply?
73,
Rainer
Whilst that may help with the high frequency power supply
noise, it wont help with power supply flicker noise.
Bruce
Or the lousy regulation and
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Thomas A. Frank
Sent: Friday, June 13, 2008 10:18 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Non-impedance matched antenna cables
I've another antenna,
Here is how I *glued* the AllElectronics power supply to the top of the
Thunderbolt and shortened the cable for a neat, compact package. I connected
the chassis wire of the power supply to the TB case.
http://www.ko4bb.com/Test_Equipment/Thunderbolt/group_buy/
The power supply is the exact same
http://www.agu.org/journals/sw/swa/free/newarticle/?id=2008SW000400
Didier KO4BB
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
You may try to call them, they may still have a few on hand.
They were on the web site just a week ago.
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bruce Lanning
Sent: Wednesday, June 11, 2008 11:33 AM
To: time-nuts@febo.com
and frequency measurement
Subject: Re: [time-nuts] Thunderbolt PS
Call who???
- Original Message -
From: Didier Juges [EMAIL PROTECTED]
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Wednesday, June 11, 2008 1:18 PM
Subject: Re: [time-nuts
Jim,
I have two 5370A counters, and both were afflicted by the cheap socket
syndrom.
After a year or so of intermittent operation (in spite of frequent removing
and reseating of the parts and application of Deoxit Gold), I took the two
boards with most of the sockets (processor board and memory
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bruce Griffiths
Sent: Wednesday, June 11, 2008 9:03 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Finally acquired a 5370B
It is usually worthwhile to check
That's a good question: on the computer side, can a single serial port be
used for both 1PPS (for ntpd purposes) using one of the modem control
signals and for serial gps monitoring without having to write custom code?
Didier KO4BB
PS: I would advise against going inside the TB and adding the
I have a pair which came from a 5334B and which I would gladly trade for the
feet :-)
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Mace
Sent: Wednesday, June 04, 2008 5:48 PM
To: Discussion of precise time and frequency
This is what they look like:
http://tonga.globat.com/~ko4bb.com//Test_Equipment/HP_5334B_Rack_Flanges/
The right one has some scuff marks in the paint, but the metal is fine.
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Mace
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David C. Partridge
Sent: Monday, June 02, 2008 1:20 PM
To: 'Discussion of precise time and frequency measurement'
Subject: [time-nuts] PCB design questions
I've been working on the design for a
Mark,
If it is more recent than this one, please could you scan it for me?
http://www.ko4bb.com/Manuals/HP_Agilent/HP_-_59306A_59306-90001.pdf
I would then post it there for all to see :-)
Thanks in advance,
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL
That looks a lot like the 10 MHz HP 10811 that I am playing with right now.
The side with the connectors is exactly the same.
Mine came out of an HP 8267A microwave synthesizer.
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Randy
I have a number of HP 10811 related documents on my Manual pages at
http://www.ko4bb.com/cgi-bin/manuals.pl
Search for '10811'
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Roy Phillips
Sent: Wednesday, May 28, 2008 4:35 AM
To:
http://www.ko4bb.com/cgi-bin/manuals.pl?dir=HP_Agilent/HP_-_105
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of J. L. Trantham
Sent: Tuesday, May 27, 2008 10:20 PM
To: time-nuts@febo.com
Subject: [time-nuts] HP 105B
I have
I found a cheap IR sensor (not a spot meter) useful to identify the one IC
that's warmer than the others in a fully populated PWB. That has been useful
to isolate the one bad part, but a contact thermometer would have been
almost as useful. While the IR sensor reading depends on emissivity, the
David,
It appears as if exiting the program caused the unit to revert to local
mode, and assume the position selected by the switches.
Interesting, I had forgotten about that. I need to check if it does the same
with my controllers.
Thanks and congrats,
Didier
-Original Message-
Remember these units don't have uC, so any signal that would normally depend
on some timing must be generated externally, i.e. come from the bus. I
suspect the box might need some signals that other equipment (uC equipped)
may not absolutely require. However, this being a piece of HP equipment, I
I started doing that some time ago using my Wiki, but got distracted. Anyone
can contribute, you are certainly welcome to:
http://www.ko4bb.com/cgi-bin/wiki/wiki.cgi
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Robert Atkinson
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stanley Reynolds
Sent: Thursday, May 22, 2008 9:37 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Comparing Reference Accuracy
I have several HP-5334A on
I have a Trimble Bullet, a Symmetricom HP 58532 and an inexpensive mag-mount
patch antenna. All are amplified. As far as how many sats they see, they are
roughly equivalent. Of course, the Bullet and HP units have narrow filters
and better defined capture range (to reject reflections from the
Phil,
The T-E datasheet lists timing accuracy at +/-15nS (1 sigma), where did you
get the spec that says 20?
Also, the antenna connector on the T-E is a BNC, the old T has an F
connector.
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Subject: ARLB010 Spring 2008 W1AW Frequency Measuring Test Set
Date: Mon, 19 May 2008 13:33:09 -0400
To: [EMAIL PROTECTED]
CC: Subscribed ARRL Members:;
From: ARRL Web site [EMAIL PROTECTED]
SB QST @ ARL $ARLB010
ARLB010 Spring 2008 W1AW Frequency Measuring Test Set
ZCZC AG10
QST de
Connector layout on the E version is different, so for sure it's a different
design. Also, the PPS acuracy is 15nS versus 20nS (1 sigma) for the older
model.
I have not looked farther than that in the spec.
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
For NiCad and NiMH batteries, check www.allelectronics.com
They have some with tabs that are really inexpensive and work well. I have
rebuilt several ham radio battery packs with these batteries (I bought two
cases of 40 of the AAs with tabs, no problem).
Didier KO4BB
-Original
There are many reasons why a person might want to stay with a particular ISP
for mail. I don't but one of my friend does, and that has been a subject of
conversation between us in the past. While a fully qualified engineer, this
person wants to keep her AOL mail account for a number of reasons,
John Ackermann N8UR [EMAIL PROTECTED] wrote:
Didier Juges wrote:
While I applaud John for going through this for his non-paying customers, I
could not blame him if he simply gave up on that... Easy for me to say since
I don't use AOL :-)
The real problem is that the AOL block
I can see we now agree this was a silly discussion :-)
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mike S
Sent: Sunday, May 11, 2008 5:43 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP
Have you checked the many 10811 documents on my web site?
http://www.ko4bb.com/cgi-bin/manuals.pl
Searchg for 10811
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Roy Phillips
Sent: Sunday, May 11, 2008 12:14 PM
To: Discussion of
-Original Message-
From: Magnus Danielson [mailto:[EMAIL PROTECTED]
Sent: Saturday, May 10, 2008 5:09 AM
To: time-nuts@febo.com; [EMAIL PROTECTED]
Subject: Re: [time-nuts] HP 5370B
From: Didier Juges [EMAIL PROTECTED]
Subject: Re: [time-nuts] HP 5370B
Date: Fri, 9 May 2008 20:11
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges
Sent: Saturday, May 10, 2008 8:08 AM
To: Time-Nuts
Subject: Re: [time-nuts] HP 5370B
That's a good illustration of the difference between
precision and accuracy
AM 5/10/2008, Didier Juges wrote...
Most microwave network analyzers have amplitude resolution
of 0.01dB,
while their accuracy is just around 1dB in most cases.
I have had to argue too many times that a piece of equipment
with a 2dB
p-p requirement on flatness was just fine when
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B
At 09:22 AM 5/10/2008, Didier Juges wrote...
Most microwave network analyzers have amplitude resolution
of 0.01dB,
while their accuracy is just around 1dB in most cases.
I have had to argue too
-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mike S
Sent: Saturday, May 10, 2008 12:36 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B
At 10:43 AM 5/10/2008, Didier Juges wrote...
(corrected for top-posting)
At 10:18 AM 5/10
This is exactly why I should not have started that thread.
But since I started this, I have to finish it.
I confused you with specification requirement and acceptance requirement.
Here is where this came from:
In our business (custom military hardware), we receive a specification from
the
Sounds good to me :-)
Thanks for a useful suggestion.
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak
Sent: Saturday, May 10, 2008 9:49 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP
Mark,
The 5335 is specified at 9 digits/second of resolution, the 5370 is
specified at 12 digits/second.
That's 3 orders of magnitude better resolution. That brings up noise that at
9d/s is simply negligible.
My two 5370s are rock stable if I only look at the 9 left-most digits.
While it would
Martyn,
I have written a VB program to do that. There are plots on my web site.
Send me the first few hundred lines of your data with some explanations
about what the fields are and I'll see what I can do with it.
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL
Very interesting, that's a lot of hardware for $179. If that thing is still
around by Christmas, that will make for a nice Christmas present...
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of christopher hoover
Sent: Sunday, May 04,
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bruce Griffiths
Sent: Sunday, May 04, 2008 7:27 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Fast frequency counting question
John Miles wrote:
If you go
Great news Tom and John.
Thanks for taking the time on behalf of so many others.
Anxiously waiting for more news,
Didier KO4BB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak
Sent: Monday, May 05, 2008 4:55 AM
To: Discussion of
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bruce Griffiths
Sent: Monday, May 05, 2008 8:12 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Fast frequency counting question
Didier Juges wrote:
I
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