I used one of the BC620AT cards many years ago with a DOS system. All
we needed was time within a second so we used with a Bancomm-supplied
DOS driver (I think) that replaced the system clock with IRIG-B based
time instead of the PC clock. It may have come with a regular driver
but I can't re
Erik,
I upgraded my ET-6000 TCXO receiver to an OCXO. I was able to get
Symmetricom to send me all three ROM images (TCXO, OCXO, Rubidium) so I
uploaded them to the KO4BB website:
http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=01_ROM_Images_and_Drivers
Get the file called DatumET-600
Has anybody had trouble getting their antennas? I exchanged emails with
David and sent him $40 for one but I never received it. I've emailed
him twice now with no response. Before I try to get my money back from
PayPal, I thought I'd check to see if anybody else had this issue.
-Bob
On 01/
See the thread titled "Upgrading TS2100 from TCXO to OCXO" around
3/30/2011. I used a different OCXO but one that had a compatible EFC range.
It's funny, a few weeks ago before the TS2100s started acting up, I
would have picked up one of those OCXOs in a heartbeat. I've had an
eBay watch set
Mine was fine until I power cycled it :( I can confirm that even with
the v4.1 firmware, power cycling it causes the date to revert back to
1995. A software restart as listed below seems to restore the correct
date for awhile but it eventually reverts back to the wrong year. Maybe
some smar
You probably need the firmware update:
Boot Code - Tymserve_2100
Rev 1.1 12/20/1996 13:07:21
Main Code - TymServe_2100
Rev 4.1 12/01/2005 14:45:23
http://www.ko4bb.com/getsimple/index.php?id=download&file=01_ROM_Images_and_Drivers/DatumET-6000TS-2100.zip
-Bob
On 05/04/2015 05:43 AM, C
n,
On Mon, 06 Apr 2015 07:37:53 -0500
Robert Watzlavick wrote:
Thank you very much for the references. I had come across [4] when
searching on Kalman filters for GPS aiding of INS measurements. I
didn't pay much attention to the GPS chapter at the time but I'll look
at it again.
Attila,
Thank you very much for the references. I had come across [4] when
searching on Kalman filters for GPS aiding of INS measurements. I
didn't pay much attention to the GPS chapter at the time but I'll look
at it again. I just downloaded [3] and it appears to have a good mix of
practic
d but several folks have suggested ways around that.
-Bob
On 04/03/2015 10:12 PM, Robert Watzlavick wrote:
I have an amateur radio license (mostly CW/HF and some VHF/UHF
experience) and I've written some driver software for an IQ
demodulation board but I have to admit, I would have no idea how
I have an amateur radio license (mostly CW/HF and some VHF/UHF
experience) and I've written some driver software for an IQ demodulation
board but I have to admit, I would have no idea how to begin setting up
that system as initially described by Attila and expanded by you and
others. I have a
I want to thank everybody for their help on this. Thanks to the list, I
have plenty of ideas that I can prototype so I'll keep you posted what I
end up trying and how well it works eventually.
-Bob
On 03/25/2015 09:27 PM, Robert Watzlavick wrote:
I want to develop a tracking system f
On 03/26/2015 02:25 PM, Hal Murray wrote:
I want to develop a tracking system for an amateur rocket ...
Do you need the position in real time, or just after the rocket returns so
you can find it?
Near real-time would be nice but I guess not an absolute requirement.
40 ns is 25 MHz. It shouldn
ard triple-axis accelerometer? A
few mm of real-estate, milliamp consumption, up to 16g, 600+ samples a sec. The
code is probably already available.
Le 26 mars 2015 à 03:27, Robert Watzlavick a écrit :
I'm working on a project that I could use some advice on and also might be of
interest to the
On 03/26/2015 01:56 PM, Jim Lux wrote:
The key is that you don't need *real time* position.. a few seconds or
minutes delay is probably ok, right?
Seconds are probably ok, minutes might be a little long. PCs are pretty
fast though these days for signal processing I would think.
To compensate f
Thanks for the suggestion. Does the DSSS make it easier to correlate between
ground stations? I'm not sure how to handle the phase offset on the 10 MHz ref
clocks.
-Bob
> On Mar 26, 2015, at 07:25, Attila Kinali wrote:
>
> On Wed, 25 Mar 2015 21:27:35 -0500
> Robert
amp up to 100 kEdges/s
> (that results in a ca 4 Mb/s datastream).
>
> Anders
>
>
> On Thu, Mar 26, 2015 at 4:27 AM, Robert Watzlavick
> wrote:
>
>> I'm working on a project that I could use some advice on and also might be
>> of interest to the list.
I'm working on a project that I could use some advice on and also might
be of interest to the list. If it's not appropriate for the list, my
apologies.
I want to develop a tracking system for an amateur rocket that can allow
me to track the rocket even if onboard GPS is lost (as is typical d
I'm seeing the same thing with my TS-2100 - it is one second behind WWV
based on the front panel display. My ET-6000 appears to be in sync.
What's interesting though is that I have a little applet on my iPhone
(NetTime) that connects to nist.time.gov and it is also a second behind.
-Bob
On
Definitely avoid BRG clocks. They are reasonably priced and look really
nice on the outside but look like a high school science project inside.
Plus, with both versions I purchased (while at 2 different companies),
the IRIG-B option just didn't work reliably. It worked some of the
time, just
Magnus,
What kind of problems did you have with it? I have a couple of BC635PCI
boards that I've been using for a while with my own LabVIEW-based
register driver. I've noticed some interesting behavior after board
reset (loses lock for 8 sec to 3.5 min), and after changing the mode
(disrupts
Glad to hear it worked out for you! That's also good to know about the
TFTP client compatibility with the TS2100.
-Bob
On 12/29/2013 09:09 AM, Anton Kapela wrote:
Rob,
On Sat, Dec 28, 2013 at 11:00 PM, Robert Watzlavick
wrote:
Are you talking about the archive named DatumET-6000TS-210
Are you talking about the archive named DatumET-6000TS-2100.zip and the
file named Tymserve.bin? If so, I uploaded that file last year. It's a
direct ROM image from a flash reader/programmer. That's why I included
the device type (AMD 29F040B-120JC) in the readme.txt. You should be
able to
See the following link for an image of the v4.1 firmware:
http://ko4bb.com/Manuals/04)_ROM_Images_and_Drivers/DatumET-6000TS-2100.zip
-Bob
On 10/09/2013 02:49 PM, Gerhard Wittreich wrote:
I have just purchased (eBay) a TS2100-IRIG with firmware v3.1. I believe
v4.1 is the latest. I requested
I believe you can adjust the level of the 10 MHz output. The schematic
shows a pot at R60 or R50 (the scan isn't clear) connected to U18 which
drives the 10 MHz sine signal.
-Bob
On 12/15/2012 05:37 PM, Ziggy wrote:
Burt -
On the scope I see 950mv RMS with 50 ohm termination, 1.5V RMS with
The manual I have isn't too clear on the differences between the units
but the drawing shows an LPRO tucked into the left front of the unit
with 2 coax cables going to the PC board (EFC, OSC), and one going to an
additional power supply in the right rear. The ET-6000 DAC is 0-5V
(actually 0.5-
I finally got a flash programmer so I uploaded all three ROM images
(TCXO, OCXO, Rub) for the Datum ET-6000 / 9390-6000 to the KO4BB
website. Last year I sent them 3 chips and asked for all the variants
so I could play with converting my TCXO unit to an OCXO unit (and
potentially a Rubidium so
Sorry to resurrect an old thread but I also have a question about using
the Thunderbolt in the future. I'm considering using 4 of them in a
multilateration setup to track an amateur rocket with an onboard
beacon. I'm a few years away from the flight so I don't want to invest
in hardware that
I used to get tons (100-300 a day) of "backscatter" emails - emails that
were supposedly sent by me but bounced back because the recipient didn't
really exist. I use a web hosting company for my website and email so I
had them enable SPF (Sender Policy Framework) on my domain and all that
stop
I would avoid BRG clocks. I've used them in two different companies now
and they're pretty much junk in my opinion. Both of the clocks I used
had IRIG inputs and they only sort of work. They seem to randomly lose
IRIG lock every few days and will easily get 1/2 second off, even when
locked.
On 05/19/2011 10:35 PM, WB6BNQ wrote:
Robert,
Two questions.
First, what is the voltage at the 9390 antenna connector with nothing attached
besides your DVM ?
It shows 5V open circuit.
Second, what happens if you just attach the antenna straight to the 9390 ? By
this i mean if voltage is
I received my Symmetricom 58536A GPS antenna splitter today (new from
eBay) and did some testing with my Datum 9390-6000, Datum TS2100, and
Thunderbolt. The Thunderbolt and TS2100 work fine with the splitter but
the 9390 has some interesting behavior with the splitter. If the 9390
is connecte
I think the graph is not using peak detect for the plotting. I leave
mine set at a 12-hour window and all the points are moving around every
second. When plotting more data than will fit in the available
resolution, it is best to "bin" the points that correspond to each plot
bin/pixel. Then
#x27;t any bits set to signify that? Maybe
the TCXO/OCXO is one configuration and the Rubidium is another. It
someone had a factory configured Rubidium unit, it would be interesting
to know if there are any bits that correspond to it.
-Bob
On 03/30/2011 08:40 PM, Robert Watzlavick wrote:
My unit
Assuming your OCXO unit came from the vendor pre-configured that way,
that means there are no changes required to the info field to convert it
from a TCXO to OCXO, just the gain and filter setting. This also seems
to match what Greg Dowd mentioned yesterday.
My unit (TCXO/GPS originally) has
ue should have
been accessible in root tim utils as d2a.
As someone pointed out, the default ovenized for those boxes was the MTI 240
low profile.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Robert Watzlavick
Sent: Sunday, March
If anybody has a TS2100 that came from the factory with an OCXO, can you
telnet into the unit and run the following command?
root eng ee info
This appears to be some sort of factory-configured personality of the
board. My TS2100-GPS unit with a TCXO has an info value of 0024. A
TS2100-IRIG
Ok, thanks. I was so focused on the IRIG and 10 MHz parts I didn't
think about the NTP function (which is what the unit is for after all).
BTW - I had some misinformation in my original post. The Abracon
AOCJY1A is probably pin compatible with the TS2100 but it's not voltage
compatible. The OCX
I've been able to successfully upgrade my Datum TS2100 to an OCXO from
the stock TCXO. I didn't see it in the archives so I thought I'd post
my findings. I noticed that the same firmware was used regardless of
oscillator configuration so there must either be jumpers or a hidden set
of commands.
Can anyone confirm the control/reference voltage for an STP2145A OCXO?
The datasheet posted on eBay says 12V supply and 5V control voltage but
it looks like they just copied the one for the MV89A. If they are truly
the same spec that's fine but before I order it, I thought I'd see if
anybody here
Hi,
I'm new to the list and I'd appreciate some advice regarding my
application. One of my hobbies is building and testing liquid fuel
rocket engines (http://www.watzlavick.com/robert/rocket). As part of my
instrumentation system, I have some Datum 9550 Video Time Overlay units
which stamp time f
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