[mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark Sims
Sent: Thursday, 26 June 2014 12:25 PM
To: time-nuts@febo.com
Subject: [time-nuts] GPSDO standard interface?
There is no standard interface for GPSDOs, but the Trimble TSIP interface as
used by the Thunderbolt/Lady Heather would be an excellent
I am quite familiar with that chip which perfectly illustrates my point. A
universal serial/USB Master interface it is not.
Didier KO4BB
On June 27, 2014 7:14:34 AM CDT, Dan Kemppainen wrote:
>http://www.ftdichip.com/Products/ICs/VNC1L.htm
>
>
>On 6/26/2014 3:39 PM, time-nuts-requ...@febo.com
If you want to see how to generate TSIP message, I can post the code to my
Thunderbolt simulator. Its in Visual Basic but it will show you an example.
It generates the primary and secondary packets.
You can download the software from my web site www.ko4bb.com
Didier KO4BB
On June 26, 2014 12:
For a new design I'd re-think the entire architecture. Back in the 1980's
It made sense for a small instrument to push data over a cable to a bigger
computer where the data could be logged and displayed. The cost and
physical size of the computing power to log and display data was large.
Times
http://www.ftdichip.com/Products/ICs/VNC1L.htm
On 6/26/2014 3:39 PM, time-nuts-requ...@febo.com wrote:
> USB may be a common interface to a computer but practically useless to
> another microcontroller.
>
> Everything can do serial but not everything can do USB master. In the worst
> case, use
Novatel has two versions of each message one binary (ending with B) and
one ASCII (ending with A). That is one way of catering to both the
interactive use and the clean software side of the problem.
Javad (GRIL now GREIS) is my personal favorite. Your commands are ascii,
often very short. The outp
This thread is now ready for the correct answer: http://xkcd.com/927/
/tvb
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http://adsabs.harvard.edu/abs/1957PhRv..105..590S
Cheers,
Magnus
On 06/26/2014 08:13 AM, Tom Van Baak wrote:
Much better than room 137.
BTW, if you run into a physicist someday who can *calculate* 9192.631770 MHz
directly from quantum mechanics, ask them to calculate the other isotopes of
ce
I dislike TSIP quite a bit. It's a disaster in my opinion if you are not
intimately familiar already with the Trimble binary commands, and exists in
a number of inconsistent and non-compatible dialects as far as I know. No
way for a human to enter a simple command in a simple text terminal, y
Gosh, all we need to do is define a nice flexible software layer between the
GPSDO and the computer, etc. similar to ASCOM for astronomical telescopes.
That way, the layer and all its associated drivers do all the work, and
anyone's GPSDO or computer program will work if the associated drivers are
There are TSIP commands for doing all those things. It should be fairly easy
to adapt them to control your hardware and whatever GPS receiver you are using.
The nice thing about implementing a TSIP interface is being able to use
existing programs like Tboltmon and Lady Heather (over 30,000 lines
r Adafruit, UT+, LEA-6T, or
whatever.
Bob
From: Didier Juges
To: Discussion of precise time and frequency measurement
Sent: Thursday, June 26, 2014 2:22 PM
Subject: Re: [time-nuts] GPSDO standard interface?
USB may be a common interface to a computer but p
to provide an alternative product
>with an
>> identical user interface.
>>
>> I just ordered the first prototype boards today, but the software
>should
>> be just a rewrite of what I did for the TIC on Bert's board, with a
>lot of
>> extras thrown in. Not tha
ne 26, 2014 12:01 PM
Subject: [time-nuts] GPSDO standard interface?
Yes I have... I have built several sensor type boards that use an ATMEL chip
as the processor. They output data in a TSIP packet format that tricked up
versions of Lady Heather can control and monitor. The most complicated one is
Yes I have... I have built several sensor type boards that use an ATMEL chip
as the processor. They output data in a TSIP packet format that tricked up
versions of Lady Heather can control and monitor. The most complicated one is
probably a LED/Battery analyzer device that measures voltages
leasant' environments and DB9/25
> connectors are a LOT more reliable than USB connectors too!
>
> regards,
>
> PaulG8GJA
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Chris Albertson
> Sent: 2
On Wed, Jun 25, 2014 at 11:14 PM, Bob Stewart wrote:
> I'll look into both SCPI and TSIP, and therein lies the reason for my
> original post. Essentially, have they been patented, and if so, have those
> patents expired?
You almost certainly want to use SCPI which is managed by IVI and is
part
; environments and DB9/25 connectors
> are a LOT more reliable than USB connectors too!
>
> regards,
>
> PaulG8GJA
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Chris Albertson
> Sent: 26 June 2
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Chris Albertson
Sent: 26 June 2014 08:13
To: Bob Stewart; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPSDO standard interface?
If you want a common interface for GPS receivers it
just ordered the first prototype boards today, but the software should
> be just a rewrite of what I did for the TIC on Bert's board, with a lot of
> extras thrown in. Not that that doesn't mean a lot of work, of course.
>
>
> Bob
>
>
>
>
> From: Tom Van Baa
On Wed, Jun 25, 2014 at 7:25 PM, Mark Sims wrote:
> There is no standard interface for GPSDOs, but the Trimble TSIP interface
> as used by the Thunderbolt/Lady Heather would be an excellent place to
> start and include. Make the unit smart enough to run unattended, but add
> enough monitoring
Much better than room 137.
BTW, if you run into a physicist someday who can *calculate* 9192.631770 MHz
directly from quantum mechanics, ask them to calculate the other isotopes of
cesium. They should be different. But I have no idea how much or little.
/tvb
> PS. At EFTF 2014 in Neuchatel, th
Tom,
On 06/26/2014 04:02 AM, Tom Van Baak wrote:
Bob,
A couple of different ideas:
1) No UI at all. The surplus GPSDO favorites over the years (like the HP
SmartClock's and Trimble Thunderbolt) work with no UI. Yes, there is a PC
program you can use to monitor and control it, or even debug i
the software should be
just a rewrite of what I did for the TIC on Bert's board, with a lot of extras
thrown in. Not that that doesn't mean a lot of work, of course.
Bob
From: Tom Van Baak
To: Discussion of precise time and frequency measurement
There is no standard interface for GPSDOs, but the Trimble TSIP interface as
used by the Thunderbolt/Lady Heather would be an excellent place to start and
include. Make the unit smart enough to run unattended, but add enough
monitoring commands so Lady Heather, etc can be used to monitor and
-
From: "Bob Stewart"
To: "Discussion of precise time and frequency measurement"
Sent: Wednesday, June 25, 2014 5:10 PM
Subject: [time-nuts] GPSDO standard interface?
In an offline communication, I suddenly realized that I hadn't given any
thought to the user interface for
On Wed, Jun 25, 2014 at 5:10 PM, Bob Stewart wrote:
> Is there an accepted standard interface for GPSDOs, or is that a murky
> Microsoft-esque world of patents and lawyers?
No. There is no standard and many (most?) don't have any kind of user
interface at all, just the 10MHz output BNC connec
this important issue until now.
Bob
From: bownes
To: Bob Stewart ; Discussion of precise time and frequency
measurement
Sent: Wednesday, June 25, 2014 7:35 PM
Subject: Re: [time-nuts] GPSDO standard interface?
Well, I built one of the ve2zaz units, and
Well, I built one of the ve2zaz units, and it has a. Pretty well defined serial
interface. On the other hand, the one I use most has a PIC and an LCD, no
serial interface.
> On Jun 25, 2014, at 20:10, Bob Stewart wrote:
>
> In an offline communication, I suddenly realized that I hadn't given
In an offline communication, I suddenly realized that I hadn't given any
thought to the user interface for my GPSDO. Is there an accepted standard
interface for GPSDOs, or is that a murky Microsoft-esque world of patents and
lawyers?
Bob - AE6RV
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