On Tue, Dec 26, 2006 at 04:14:45PM -0600, Didier Juges wrote:
> When reading the data sheet for the Thunderbolt, and reading all the
> pitfalls associated with non-integrated GPSDO designs using stand alone
> GPS receivers, such as sawtooth correction and quantization noise, it
> seems like the
Ovenaire? Isn't that a remarkable name for someone making oscillators? I
see that Nordic Ware also makes an Ovenaire product that turns any
baking oven into a convection oven.
Stranger things have happened. In the early days of the space program,
elaborate wiring harnesses were made on 4x8 sheets
John,
Many thanks for posting the photos. Now I know that there are
no card edge connectors and no need to find a card rack. The
connectors are not all that difficult to trace. The arrow
pointing to +24 is a help.
What's all this about 15 MHz out?
Bill Hawkins
-Original Message-
From:
Magnus
Amended to substitute plesiochronous and plesiochronism for the
incorrect words I used previously.
As the frequency of the clock which controls the timing of the receiver
PPS pulse output drifts and approaches plesiochronism with the
"true" frequency of the PPS signal, the rate of chang
At 12:38 PM -0800 12/26/06, Cornell wrote:
>Looking for info, datasheet, or whatever
>
>Ovenaire-Audio-Carpenter (OAC) Model 84-14 10 Mhz oscillator, s/n 26816-2.
>This is a 2" x 2" x 3.25" sealed unit which weighs 11.0 ounces.
>
>The top has two screws marked Freq Adj coarse and fine, and one
From: Dr Bruce Griffiths <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] TIC resolution impact on GPSDO's performance
Date: Wed, 27 Dec 2006 01:15:48 +1300
Message-ID: <[EMAIL PROTECTED]>
> Magnus Danielson wrote:
> > From: "Poul-Henning Kamp" <[EMAIL PROTECTED]>
> > Subject: Re: [time-nuts] TIC reso
Dr Bruce Griffiths wrote:
> Didier Juges wrote:
>
>> Dr Bruce Griffiths wrote:
>>
>>
>>> Didier Juges wrote:
>>>
>>>
>>>
This discussion is fascinating, and as always it has prompted a number
of other questions for me.
I understand the sawtooth correct
Tim Shoppa wrote:
> Are there any useful, free or near-free tools for simulating
> high-performance oscillators? I'm thinking particularly about
> making at least a little bit quantatitive statments
> about phase noise through simulation.
>
> SPICE will simulate an oscillator starting up, doesn't d
Didier Juges wrote:
> Dr Bruce Griffiths wrote:
>
>> Didier Juges wrote:
>>
>>
>>> This discussion is fascinating, and as always it has prompted a number
>>> of other questions for me.
>>>
>>> I understand the sawtooth correction is provided to allow correction of
>>> 1 PPS timing erro
I have a Fisher Series 5000 2 pen 11" paper recorder in excess of my needs
that is for sale. Complete data on this recorder can be seen at:
http://www.allendatagraph.com/omni5000.html
I am asking $75.00 plus shipping within the USA. It is in excellent
condition.
Thanks,
Bruce W1GBS at [EMAIL PRO
Nope, haven't fired it up yet. I'm not sure when that will actually
happen; too many projects going on in the basement! I wanted to get the
pics up to assist anyone else who may be working out the interface
information, so did that before anything else.
John
Didier Juges said the following
John,
Nice pics!
Did you at least run it to see if it works and what kind of performance
you could get out of it?
Didier KO4BB
John Ackermann N8UR wrote:
> My RFTG-m-XO arrived today, and the first thing I had to do was rip it
> apart. I've put a series of pictures of the thing in various sta
My RFTG-m-XO arrived today, and the first thing I had to do was rip it
apart. I've put a series of pictures of the thing in various stages of
disassembly at http://www.febo.com/time-freq/hardware/Lucent_GPSDO/.
The pictures are full resolution so you should be able to zoom in to
look at circuit de
Looking for info, datasheet, or whatever
Ovenaire-Audio-Carpenter (OAC) Model 84-14 10 Mhz oscillator, s/n 26816-2.
This is a 2" x 2" x 3.25" sealed unit which weighs 11.0 ounces.
The top has two screws marked Freq Adj coarse and fine, and one brass
mounting pillar.
The bottom has six solder
Ansoft Designer is intended for RF/Microwave applications. I don't know how
well it simulates an oscillator as most often I have heard of it used for
amplifiers and filters. Anyway, there is a student version that is free so
it is worth a look.
http://www.ansoft.com/products/hf/ansoft_designer/
Just to let you know -- I've successfully run Ulrich's very nice Plotter
program under Linux using the wine emulator. The only problem I've seen
(so far) is that the ADEV chart has a very large left margin with some
crud that I think may be an attempt to render Greek symbols. I suspect
that's a f
Are there any useful, free or near-free tools for simulating
high-performance oscillators? I'm thinking particularly about
making at least a little bit quantatitive statments
about phase noise through simulation.
SPICE will simulate an oscillator starting up, doesn't do a
particularly good job whe
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Magnus Danielson wri
> tes:
>
>
>> harmonic(2)
>> 1a) a tone in a harmonic series
>> 2) in physics, a component frequency of a harmonic motion that is an integral
>> multiple of the fundamental frequency
>>
>> overtone
>> 1b) Harmonic(
Dr Bruce Griffiths wrote:
> Didier Juges wrote:
>
>> This discussion is fascinating, and as always it has prompted a number
>> of other questions for me.
>>
>> I understand the sawtooth correction is provided to allow correction of
>> 1 PPS timing errors when the processor clock is non-coheren
Poul-Henning Kamp said the following on 12/26/2006 09:35 AM:
> In message <[EMAIL PROTECTED]>, John Ackermann N8UR writes:
>
>> I know a lot of cell sites don't have the luxury of a clear sky view,
>> but given these results from a decent antenna, I wonder if holdover
>> performance continues to b
In message <[EMAIL PROTECTED]>, John Ackermann N8UR writes:
>I know a lot of cell sites don't have the luxury of a clear sky view,
>but given these results from a decent antenna, I wonder if holdover
>performance continues to be a significant factor in GPSDO design?
Lighting, birds, water, spider
Slightly related to the recent threads on GPSDO, I have been plotting a
bunch of statistics from an M12+ for about 10 months
Every five minutes I grab the the number of SVs visible, tracked, signal
strength of each bird, and average signal strength of the tracked birds.
I have plots of the full r
I have a Linux-based program for the 5334. I'm not sure I ever posted
the code (a perl script that uses the linux-gpib drivers) but I'd be
happy to send it to you.
John
Jack Hudler said the following on 12/25/2006 10:20 PM:
> One time I found a site that had some software to read a 5334x co
In message <[EMAIL PROTECTED]>, Magnus Danielson wri
tes:
>harmonic(2)
>1a) a tone in a harmonic series
>2) in physics, a component frequency of a harmonic motion that is an integral
> multiple of the fundamental frequency
>
>overtone
>1b) Harmonic(2)
Overtone is a musical term and it is not th
Magnus Danielson wrote:
> From: "Poul-Henning Kamp" <[EMAIL PROTECTED]>
> Subject: Re: [time-nuts] TIC resolution impact on GPSDO's performance
> Date: Tue, 26 Dec 2006 08:14:12 +
> Message-ID: <[EMAIL PROTECTED]>
>
>
>> In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes:
>>
>>>
Poul,
> The field in the oncores serial data-stream called negative
> sawtooth correction must be taken into account to get optimum
> performance out of the receiver. Ignoring it in toto or
> simply averaging it will generally not do for OCXO disciplining.
thank you for your clear words! Whi
From: Dr Bruce Griffiths <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] TIC resolution impact on GPSDO's performance
Date: Tue, 26 Dec 2006 23:35:28 +1300
Message-ID: <[EMAIL PROTECTED]>
> Poul-Henning Kamp wrote:
> > In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes:
> >
> >> Poul-Hennin
Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes:
>
>> Poul-Henning Kamp wrote:
>>
>>
>>> I think what you are trying to express is that the frequency from
>>> the internal Xtal (at times) is in an overtone of the 1Hz PPS, which
>>> gives rise to hanging
From: "Poul-Henning Kamp" <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] TIC resolution impact on GPSDO's performance
Date: Tue, 26 Dec 2006 08:14:12 +
Message-ID: <[EMAIL PROTECTED]>
> In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes:
> >Poul-Henning Kamp wrote:
> >
> >> I think what y
In message <[EMAIL PROTECTED]>, Dr Bruce Griffiths writes:
>Poul-Henning Kamp wrote:
>
>> I think what you are trying to express is that the frequency from
>> the internal Xtal (at times) is in an overtone of the 1Hz PPS, which
>> gives rise to hanging bridges.
>>
>>
>Poul-Henning
>
>Surely you
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