. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Joseph Gray
Sent: Friday, September 25, 2009 10:05 PM
To: time-nuts@febo.com
Subject: [time-nuts] Fwd: DC-DC converter
Oop
I have a copy of GPSCon Pro that I bought several years ago. It seems
to do ok, but I was wondering what others thought of GPS Control by BD
Systems. Considering that the upgrade fee for GPSCon Pro is $39 and a
new copy of GPS Control is $20, it's very tempting.
Joe
KA5ZEC
-ND
Part #102-1690-ND
9-36V in, 48V 1.04A out
$85.46, in stock
9-pin module
Joseph Gray wrote:
Does anyone know where I can get an inexpensive 12VDC to 48VDC
converter to power one of my Z3801A's? I can find 12VDC to 24VDC
units, like this one at Jameco:
http://www.jameco.com/webapp/wcs
Since you're talking about LabView and GPIB, I thought I'd mention
that I have a student copy of LabView 7 and a NI GPIB-Ethernet
interface that I'm not using. Everything is like new and I have all
the manuals and CDs. The software cost me $100. I'll take $150 for
both the software and GPIB
A good test would be to load it down to its rated current and voltage
and monitor noise with a clamp on current probe ( on one lead)
to a low frequency spectrum analyzer
I don't have a spectrum analyzer. I emailed a friend about using his.
Open it up and look for tell tale signs of the
April 1975 for a description of the 62605M.
Bruce
Joseph Gray wrote:
A good test would be to load it down to its rated current and voltage
and monitor noise with a clamp on current probe ( on one lead)
to a low frequency spectrum analyzer
I don't have a spectrum analyzer. I emailed
Over the years, I have gotten several APC Smart UPS for next to
nothing. In every case, all they needed were new batteries. Unless
they are physically damaged or a circuit board is toasted, they seem
to work fine. The attitude seems to be The battery died, throw out
the UPS and buy a new one.
On
This is not strictly time-nuts related, but I know there are a lot of
folks here who have and use HP surplus equipment. I have an
opportunity to buy an HP 62615M switching power supply. It is rated
15VDC @ 40A. I have it adjusted to 13.8VDC. I have Googled, checked
the Agilent site and BAMA, but
starting into a short circuit (at leas the
one I used didn't and took out all the switching devices).
Bruce
Joseph Gray wrote:
This is not strictly time-nuts related, but I know there are a lot of
folks here who have and use HP surplus equipment. I have an
opportunity to buy an HP 62615M
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Love it! Twain is always good. I hadn't seen this story before. Thanks for
sharing.
- Original Message -
From: christopher hoover [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Wednesday, October 31, 2007 1:05 AM
You can find lots of documentation at:
http://www.hpmuseum.net/exhibit.php?hwdoc=74. Much less painful to download.
- Original Message -
From: Neon John [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, October 20, 2007 11:07
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Until he fixes that URL, just paste the filename into the page URL after
Misc/. It worked for me.
- Original Message -
From: Eric Fort [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
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Now I just need pens and paper...(I have one offer for this, more sources
are welcome)
Thanks to all,
Eric
I know that HP stopped making pens several years ago. I don't know if any
other manufacturer still makes them.
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I'm looking at the Add Printer dialog in WinXP right now. I see HP-GL/2
Plotter and HP 7550 Plus listed. Shouldn't one of those work?
- Original Message -
From: Didier Juges [EMAIL PROTECTED]
To: 'Discussion of
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http://www.sparkfun.com/commerce/present.php?p=GPSClock-1
I wouldn't recommend putting this clock in your bedroom :-)
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To
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I don't think that there has been truthful, unbiased new reporting since the
days of Walter Cronkite. And that's the way it is. :-)
- Original Message -
From: Mike S [EMAIL PROTECTED]
To: Discussion of precise time
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I don't remember the particulars, but not too long ago I read that someone
figured out how to load unsigned drivers on Vista. You'll have to Google for
it, as I don't remember where the details were posted. It is technically
: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Joseph Gray
Sent: Wednesday, 2007 September 19 18:12
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] M$-Vi$ta-compliant PC RTC clock card?
I don't remember the particulars, but not too long ago I read
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As Christopher said, the easiest method is the cut-sheet feeder. If you
don't want to destroy the book, there is a scanner that will let you scan to
within 1/4 inch of the binding - the Opticbook 3600. You can find it online
I'm using this version: [EMAIL PROTECTED] (Ignore
the hyperlink. Outlook Express insists on thinking this is an email address,
because of the @ symbol.)
Restarting the NTP service on that PC has fixed the problem for now. That PC
has been running continuously since 17 March. I only noticed the
using.
Rob
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Joseph Gray
Sent: 17 May 2007 19:27
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] NTP problem on Windows
I'm using this version: [EMAIL PROTECTED
What type of processing is being done to the audio? What OS is everything
running on? Do you have any ability to configure the system, or is it a
closed box?
If it is a Windows system and you can install software on it, you might try
ASIO2All. It is a universal audio driver that supports the
I am running the Meinberg NTP software on two PCs. Both PCs are running
WinXP w/SP2, both are on the same network and both are syncing to servers at
pool.ntp.org. In the past, both clocks have shown that the two PCs had the
same time. Today, I just noticed that one of the PCs is running about 9
Are both machines syncing to the same ntp erver?
One or both of them of them hasn't synced to 127.127.1.0 by any chance?
Bruce
Although they are both using the pool at ntp.org, they are currently syncing
to different servers. They both are syncing to stratum 2 servers. Neither is
syncing to
What are the actual IP addresses of the servers they are syncing to?
Bruce
The one with the correct time:
Sync to: 64.5.1.130 Offset: 38.346ms Stratum: 3
The one with the wrong time:
Sync to: 24.123.66.139 Offset: -1.074ms Stratum: 3
___
At my QTH both of those servers are Stratum 2 and within a few hundredths
of a second of the Right Time.
Odd that you see them as Stratum 3, maybe you've got a firewall pulling
tricks on you :-).
The best way to configure a NTP client is with multiple (preferably
3 or 4) servers, ideally
I am not familiar with the Meinberg software so I am guessing that if you
are running that NTP software you would not be using Windows time service?
If you don't need Windows time service, go into services and stop the
windows time service and set it to manual or disabled. My thinking is
the
PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Joseph Gray
Sent: Wednesday, May 16, 2007 8:13 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] NTP problem on Windows
I am not familiar with the Meinberg software so I am guessing that if
you are running that NTP
on Windows
--- Joseph Gray [EMAIL PROTECTED] wrote:
As a test, I just restarted the NTP service on the PC that was off.
It is now keeping the correct time. Strange.
Not so strange.
I routinely reboot all of our Windows machines; otherwise
they become flaky and unreliable. Win 98 needed
As a practical matter there are few places to get .pdf docs with the
required
TOC, LOF and LOT indented bookmarks so I usually make my own. I have
gotten
Microchip to change from chapter titles that were meaningless to their now
fine
bookmarks. But so far my attempts to get the Army to change
I wonder if building a passive loop antenna would suffice? This trick is
used with AM BCB radios.
- Original Message -
From: Palfreyman, Jim L [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Monday, April 30, 2007 1:13 AM
Subject: [time-nuts] LF time signal emulation
Folks,
Living
Yeah, bookmark is Adobe-ese for what I was referring to as a PDF
index. Even better would be the ultimate tool for finding stuff in
doc files - the permuted index. Unfortunately that would mean a LOT
of OCR work.
John
Coincidentally, I was just trying out a copy of Acrobat 8 Pro for the
how do I do that, and still have the old software use the NI-488 drivers?
thanks,
Said
I don't know whether that old software will have a problem with drivers on
WinXP or not. As for compatibility mode, that applies to the program
executable itself. It changes settings under WinXP to match
I will try that. I may have to do a dual boot on that machine if it
doesen't
work out on XP. Installing Win98 after XP has been installed is an
entirely
other discussion...
bye,
Said
Another way to dual boot that would be a lot easier than trying to graft
Win98 onto a WinXP drive is to
I've used several pieces of network hardware that almost got this right.
They allowed you to enter start and end dates, but only by calendar date.
You couldn't say 2nd Sun or such. That made the feature useless. I wonder
why they bothered?
- Original Message -
From: Jason Rabel [EMAIL
Yep, you missed where I also recommended just that possibility.
- Original Message -
From: Mike Suhar [EMAIL PROTECTED]
To: 'Discussion of precise time and frequency measurement'
[EMAIL PROTECTED]
Sent: Thursday, April 12, 2007 6:08 PM
Subject: Re: [time-nuts] Looking for Wavecrest Visi
I am trying to set up a Win98 machine with GPIB since I
bought a quite old version of Visi from Wavecrest that runs
only on Win98.
Did you try using compatibility mode on WinXP to run that software?
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Try logging the positions to a PDA or normal computer. Look at the values.
How much do they wander? Compare with the positions from the Oncore in the
GPSDO. This will give you a much better understanding or feeling of the
quality of the solutions.
The Garmin has a USB port, but no serial. I
: Joseph Gray [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; Discussion of precise time and frequency
measurement time-nuts@febo.com
Sent: Friday, April 06, 2007 8:47 AM
Subject: Re: [time-nuts] GPS question
Try logging the positions to a PDA or normal computer. Look at the
values.
How much do
Am I correct in assuming that the position given by a WAAS enabled handheld
GPS unit is more accurate than the position reported by my Z3801?
Specifically, I tried a Garmin eTrex Legend Cx with WAAS enabled and used
averaging mode for the waypoint.
On a related question, the eTrex reported
I'm waiting for when we all begin using stardates :-)
- Original Message -
From: David Dameron [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Sunday, April 01, 2007 3:00 PM
Subject: [time-nuts] metric timekeeping
Hi Chuck,
The French tried that about 1794-1795 (normal calendar year
When close enough is good enough :-)
http://www.thingsyouneverknew.com/website/store/product_detail.asp?UID=2007020820322012item%5Fno=80153keyword=F1JScat%5Fkeyword=F1JSsearch%5Fpage%5Fno=page%5Fno=ltype=featWT.svl=FeaturedItem1WT.ac=FeaturedItem1
___
There isn't anything of importance on the front of mine. It just has the HP
logo, HP name and the phrase 5370A UNIVERSAL TIME INTERVAL COUNTER. The
back side looks like it was silkscreened in black.
- Original Message -
From: Jack Hudler [EMAIL PROTECTED]
To: 'Discussion of precise
Back in the days of cameras that used film :-) Nikon used to make a very
nice waterproof and rugged camera. I forgot the model, but it was made for
divers. I knew several people who had one, but they were all cavers.
Needless to say, these cameras took a lot of abuse in a cave.
- Original
Many businesses that sell glass also sell Plexiglass.
- Original Message -
From: Bill Janssen [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, March 22, 2007 5:34 PM
Subject: Re: [time-nuts] HP 5370A Frequency counter
I love it! Thanks for the link.
- Original Message -
From: Bill Jones, K8CU [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, March 19, 2007 3:53 PM
Subject: [time-nuts] WWV spoof
This came today from a non-time-nuts email
The grounds are also switched.
- Original Message -
From: Richard W. Solomon [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, March 18, 2007 6:54 AM
Subject: Re: [time-nuts] Coax switch
That's 6 BNC connectors, the switch has
, March 18, 2007 5:18 PM
Subject: Re: [time-nuts] Coax switch
On Sun, 18 Mar 2007 11:56:44 -0600, Joseph Gray [EMAIL PROTECTED]
wrote:
The grounds are also switched.
Really!? I don't think I have ever seen a coax switch or relay where all
the grounds (shields) weren't always connected together
The local surplus guy got in a few dozen coax switches. The only markings on
them say Type DSWA0. Dimensions are about 2.6 H x 2 D x 1 W. There is a
toggle switch on the front and three BNC connectors on the back.
I can't find any information about these. Does anyone know anything about
these?
I just checked with a meter and they are DPDT. I read about 0.2 Ohms from
the center BNC when switched to each outer BNC.
- Original Message -
From: Joseph Gray [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, March 17, 2007
I assume these are *signal* switches, as opposed to *power* switches?
Didier
Well, as I said, they have BNC connectors on them. Also, from the markings
on the panel they were mounted in, they were part of some type of telemetry
system.
I was going to try hooking the one I have up to a signal
I have two Chinese-made atomic clocks that did not adjust to the new time.
My Casio atomic watch did adjust correctly.
- Original Message -
From: Brian Kirby [EMAIL PROTECTED]
To: Time Nuts time-nuts@febo.com
Sent: Sunday, March 11, 2007 6:32 AM
Subject: [time-nuts] Happy Leap Hour Day
I suppose the time signal includes DST info and these clocks do not use
it, while the Casio does? Or is the Casio a new model that may have the
right DST programming?
Didier KO4BB
The clocks and the watch were all purchased within the last four months. Of
course, I don't know how long they
, on the positive side, you may be off by an hour, but the seconds
will be right :-)
I plan to take tomorrow off anyhow, that will give me another day to
adjust my own body clock (with is not disciplined to anything...)
Didier KO4BB
Joseph Gray wrote:
I suppose the time signal includes DST info
Tom, I was under the same impression as you, regarding RC clocks. However, I
just pulled/replace the battery on one of mine and then forced an update. It
still is an hour off. Am I missing something, or is the clock?
- Original Message -
From: Tom Van Baak [EMAIL PROTECTED]
To:
What make/model? This is interesting. I have seen
something like this before. It might work tomorrow. It
might take one 2 AM transition. Or it might work in
another hour when 11-Mar-2007 UTC is over. Can
you try it again a few times and tell me when it first
comes up with the correct time?
might take one 2 AM transition. Or it might work in
another hour when 11-Mar-2007 UTC is over. Can
you try it again a few times and tell me when it first
comes up with the correct time?
Tom, I did another forced sync and now it has the correct time.
I just picked up a Tracor 888A Linear Phase Recorder at the local surplus
place. I thought it might be worth tinkering with, for only $7. I did some
Googling, but can't find any information on this device. Can anyone help?.
Thanks.
___
time-nuts
Didier, thanks a lot for the manuals.
I just tried some of the performance tests on my 5370A and I'm not getting
what the manual says. Starting with the initial tests in Table 4-1, I'm good
until Step 13. Instead of 100nS, I read 10nS all the way through Step 17.
Pressing COMPLMNT shows -90nS.
I'll take it. Can you email me a picture?
- Original Message -
From: Richard W. Solomon [EMAIL PROTECTED]
To: Time-Nuts time-nuts@febo.com
Sent: Friday, February 23, 2007 8:46 PM
Subject: [time-nuts] FS: SPECTRACOM 8140 Distribution Amp
This one has Option 7 installed, takes 10 MHz
Great tip. Thanks for sharing. You're lucky to have a decent surplus place
locally. If I were to walk into the only so-called surplus place we have and
asked for a MAX232 chip, I'd get blank stares. If it's not 50 years old, or
a new clone PC component, he won't have it or know what it is.
I believe that laptop hard drives use that size ribbon cable.
- Original Message -
From: Didier Juges [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, January 27, 2007 6:31 PM
Subject: Re: [time-nuts] ACE-III GPS receivers
Oh, that would look so nice, next to some of my tube radios!
- Original Message -
From: Dave Brown [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, January 25, 2007 4:27 PM
Subject: Re: [time-nuts] Odd request
Yes- XYL,
So, does anyone still need the PDF that I have?
- Original Message -
From: Randy Warner [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, January 24, 2007 9:33 AM
Subject: Re: [time-nuts] HP 58517A Distribution Amp
Guys,
://www.ko4bb.com/ham_radio/Manuals
Thanks in advance
Didier KO4BB
Joseph Gray wrote:
I have a PDF for a 58516A, if that will help.
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surmised they may have been swapping machines, even though he said he
had no report of maintenance being done at the time.
All is good now, and has been since, as it had been since I went with
Globat 3 years ago.
I'll attribute it to Gremlins :-)
Didier KO4BB
Joseph Gray wrote:
I already
I have a PDF for a 58516A, if that will help.
- Original Message -
From: Colin Bradley [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Tuesday, January 23, 2007 10:42 PM
Subject: [time-nuts] HP 58517A Distribution Amp
Would anyone have a pdf or link for the manual on the HP 58517A L1
I have a PDF of both the Operation and Service manuals for a 2215A. I don't
remember where I found them. I can post them on a file sharing site if
anyone wants them. The files are 36MB/38MB in size.
- Original Message -
From: Jason Rabel [EMAIL PROTECTED]
To: 'Discussion of precise
Joseph Gray wrote:
I have a PDF of both the Operation and Service manuals for a 2215A. I
don't
remember where I found them. I can post them on a file sharing site if
anyone wants them. The files are 36MB/38MB in size.
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Tom, thanks for your very clear and simple reply. I may be over thinking
about the problem and trying to make it more complicated than it is.
The target device is a phone system. The time is used for call logging and
display on the phones. Considering that the device's RTC doesn't keep very
Hal, I thought about doing this and it would be workable. However, something
in me just doesn't like the idea of brute forcing it. Tom's elegant solution
appeals to me more. Thanks for the suggestion, though.
For something like a phone system, I might try just smashing it to the
right
time
For various reasons, I can't change the software on the device. It would be
even more impossible to modify the hardware. The device's time is settable
at any time via either serial port or HTTP, as I mentioned earlier.
Considering what I am allowed to do with the device, I think an external
I have a piece of equipment that has its time set either via a serial port
or via HTTP. After initial setting, the device keeps its own time (although
badly). The device has no NTP capability itself. Although I'm describing a
particular piece of equipment, I have seen many other devices that
You can steal some routines here:
http://www.merlyn.demon.co.uk/astron-3.htm
- Original Message -
From: John Ackermann N8UR [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, August 20, 2006 12:22 PM
Subject: [time-nuts] MJD
I picked up an HP 58516A (four-port) on ebay last year, very cheaply. I
didn't need four ports, but the price was right.
Magnus, you probably already know this, but just in case you don't, I'll
mention it. Those HP splitters come in two varieties. On one, the 5VDC is
fed into port 1. On the
I have been looking for the operation/service manual for my HP 5370A for
some time. I had previously found the B manual online. Just recently, I
found the A manual at this URL: http://www.g8wrb.org/data/HP/
You should also find it on the Agilent site soon, as I sent them the link.
I sent an email to the seller asking for my money back. After waiting
over two weeks for a response but hearing nothing, I finally posted a
negative feedback. I immediately got an incoherent negative in response
accusing me of lying and claiming that they would have happily refunded
my
Try this site to find local survey benchmarks.
geocaching.com/mark
Fred
N9RKM
Thanks, I'll take a look at it.
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Let me first say that I don't know anything about surveying. I have a copy
of the plat survey for my house. On the survey are four sets of coordinates
that resemble lat/long numbers, but obviously aren't. What are these
coordinates and is there any way to calculate a lat/long of a specific point
Where are you? Some countries (for example the UK) have their own grid
system. A survey should be accurate to around 20mm +/- 50ppm
I'm in NM, USA. I wanted to see if I couldn't come up with a more accurate
lat/long than the Z3801 survey function provides.
Dumb question time - have you tried asking the surveyor what the numbers
are and how to convert?
John
Not a dumb question. I thought about it, but I suspect that he/they wouldn't
want to take the time to explain this to me, not being a paying customer.
Yes, that seems to describe the numbers on my survey. So, without knowing
the lat/long of the known markers, this isn't going to get me anywhere. Oh
well, it was a thought.
Thanks to everyone for the input.
- Original Message -
From: Chuck Harris [EMAIL PROTECTED]
To: Discussion of
I don't think there is such a thing as a low cost GPIB card. Sometimes you
can find one on ebay for an ok price, but not often. There was a USB to GPIB
adapter that was mentioned on this list a while back. It was inexpensive.
- Original Message -
From: Glenn Powers [EMAIL PROTECTED]
To:
I found that USB-GPIB controller. Looks like BSD and Linux are supported.
http://www.sparkfun.com/commerce/product_info.php?products_id=549
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packaging machinery design. The sugar wafer used in that product was
highly hygroscopic. The main reason that product failed was that we
weren't able to achieve sufficient shelf life despite trying all sorts
of quite expensive multi-layer metallized wrapping paper. Even the
multi-layer
I just switched from using the built-in SNTP client for Windows XP to the
Windows binary of NTP that I got here:
http://www.meinberg.de/english/sw/ntp.htm
In both instances, I was using the us.pool.ntp.org servers. It seems that
the Windows XP implementation leaves something to be desired. The
1. Has the restriction on shipping c(a)esium gone away?
I didn't know there was a restriction. I told the UPS guy what I wanted to
ship and he even claimed to know what it was. He said he had shipped one
before.
2. The R-390 class receivers are about the weight of a 5061. I've never
heard
Thanks a lot for the links. I have printed out all the relevant information
and will take it with me to UPS when it's time to ship. This should avoid
any potential hassles.
- Original Message -
From: Hal Murray [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Sunday, April 30, 2006 8:26 PM
Just a suggestion - VMware Player is now free. Run a VM on Linux with real
Windows inside. Since you had a PC running Windows and are now running
Linux, I assume you haven't given away your old Windows license? There are
several websites that tell you how to create the VM disk image using free
I have an HP 5061B that I picked up last year. Due to financial reasons, I
need to sell it. I thought I would offer it to the list before I put it on
eBay. If this is ok, someone let me know and I'll post details.
Thanks.
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If anyone has the manual on the HP 8970B noise figure meter (10-1600 MHz,
a bit higher with an option), could they scan me pages 1-1 and 1-2, as
TIFF files but do *not* convert to pdf. The manual is on the Agilent site,
but those two introducory pages are missing. I've made Agilent aware of
I was the one who asked. It should certainly be posted somewhere for
everyone, but if not, please do send me a copy.
Thanks.
- Original Message -
From: [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Thursday, July 28, 2005 5:43
Subject: [time-nuts] Agilent App Note 174-10 (Cable
I have always hated DST. I would rather they do away with it entirely. Maybe
I should move to Arizona?
- Original Message -
From: Tom Van Baak [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, July 27, 2005 2:36
Subject:
Does anyone have a copy of Agilent appnote 174-10 Measuring the electrical
length (delay) of cables? A search of the Agilent site doesn't find it.
Thanks.
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I was thinking about using Clicktime http://www.realhamradio.com/network.htm
in a little experiment, here at home. The program is supposed to pulse the
DTR of the selected COM port on a Windows PC at one second intervals. Since
the program must take a finite amount of time to execute the
Thanks, I knew that was the the basic procedure, using a T.I. counter. I was
hoping someone had a copy of the Agilent appnote, to see if there were any
more details that would further my understanding.
- Original Message -
From: Brian Kirby [EMAIL PROTECTED]
To: Discussion of precise
You may have a bias error. Try connecting 1 PPS to the start input
and stop input via equal length of bnc barrels or two very short
pieces of matched length cable. Run your measurements again - you mave
have to subtract the bias from your measurements to get a true reading.
Bria - N4FMN
If this is a 5370B there is an easier way: Use TI+/- mode, and
measure first from start to stop, then from stop to start and take
the average.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
I have a 5370A, but is seems to have the same controls as the B, so I'll
try your suggestion.
A neighboring house may cut the 10 degree elevation profile, but
bulldozing it is not an option for the moment.
Just wait until they go on vacation. When they get back, tell them it was a
hurricane.
Better luck with your next experiment :-)
___
I was thinking about ordering one of these:
http://store.qkits.com/moreinfo.cfm/vk011 for measuring temperature inside,
outside, and wherever. I think tracking the temperature as I take long term
measurements would be a good idea.
I was wondering which is best: measuring the room temperature
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