Re: [time-nuts] No State Of The Art Counter

2011-01-10 Thread Tijd Dingen
--- On Sat, 1/8/11, Magnus Danielson mag...@rubidium.dyndns.org wrote: ... How will the input side work? How will you handle input signals of various kinds? In particular sine of various amplitudes and frequencies. Slew-rate can be a limiting factor as white noise will convert into

Re: [time-nuts] No State Of The Art Counter

2011-01-10 Thread Rex
On 1/10/2011 1:42 PM, Tijd Dingen wrote: ... I read up on it on Bruce's site. At least I think it is Bruce's site, what with the /~bruce/ in the url. ;) ... regards, Fred I assume you mean: http://www.ko4bb.com/~bruce That is not Bruce's site, rather DIDIER's site. Didier has been very

Re: [time-nuts] No State Of The Art Counter

2011-01-10 Thread Tijd Dingen
That was indeed the site I meant. I stand corrected. :) --- On Mon, 1/10/11, Rex r...@sonic.net wrote: From: Rex r...@sonic.net Subject: Re: [time-nuts] No State Of The Art Counter To: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Monday, January 10, 2011

Re: [time-nuts] No State Of The Art Counter

2011-01-09 Thread Tijd Dingen
. *cough* So yeah, I'll stick with the ADI parts for now. --- On Mon, 1/10/11, Geraldo Lino de Campos gera...@decampos.net wrote: From: Geraldo Lino de Campos gera...@decampos.net Subject: Re: [time-nuts] No State Of The Art Counter To: time-nuts@febo.com Date: Monday, January 10, 2011, 2:26 AM

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread Bruce Griffiths
Gerhard See: http://www.sdrforum.org/pages/sdr06/sdr06_papers/1.3/1.3-01.pdf for an ultra low phase noise dds technique. Bruce Gerhard Hoffmann wrote: Am 06.01.2011 20:02, schrieb Tijd Dingen: Also note the glaring lack of a prescaler. This can and will be added at a later date to extend the

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread Tijd Dingen
For prescaling, I'd suggest using the dividers in one of the Analog Devices PLL parts (ADF4xxx) instead of Hittite chips. Many of the AD parts can still be purchased in packages with actual pins, and you can always get them in small quantities. They will also take a lot less power. Then I

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread Tijd Dingen
--- On Thu, 1/6/11, Magnus Danielson mag...@rubidium.dyndns.org wrote: From: Magnus Danielson mag...@rubidium.dyndns.org Subject: Re: [time-nuts] No State Of The Art Counter To: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Thursday, January 6, 2011, 10:05

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread Rick Karlquist
For prescaling, I'd suggest using the dividers in one of the Analog Devices PLL parts (ADF4xxx) instead of Hittite chips. Many of the AD parts can still be purchased in packages with actual pins, and you can always get them in small quantities. They will also take a lot less power.

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread John Miles
For prescaling, I'd suggest using the dividers in one of the Analog Devices PLL parts (ADF4xxx) instead of Hittite chips. Many of the AD parts can still be purchased in packages with actual pins, and you can always get them in small quantities. They will also take a lot less power.

Re: [time-nuts] No State Of The Art Counter

2011-01-07 Thread Magnus Danielson
On 07/01/11 23:45, Tijd Dingen wrote: --- On Thu, 1/6/11, Magnus Danielsonmag...@rubidium.dyndns.org wrote: From: Magnus Danielsonmag...@rubidium.dyndns.org Subject: Re: [time-nuts] No State Of The Art Counter To: Discussion of precise time and frequency measurementtime-nuts@febo.com Date

[time-nuts] No State Of The Art Counter

2011-01-06 Thread Tijd Dingen
To whom it may concerns, Currently I am building a DIY frequency counter. Since this is my first serious counter project I am trying to keep things simple, hence It Will Not Be State Of The Art. Maybe a not-too-difficult hobby level counter will be of interest to some, so I'd thought I'd post

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Don Latham
Hi Fred: prescalers in convenient package for experimentation at RFBay. SMA connectors, though. Don Tijd Dingen To whom it may concerns, Currently I am building a DIY frequency counter. Since this is my first serious counter project I am trying to keep things simple, hence It Will Not Be

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread shalimr9
...@febo.com Date: Thu, 6 Jan 2011 11:02:12 To: time-nuts@febo.com Reply-To: Discussion of precise time and frequency measurement time-nuts@febo.com Subject: [time-nuts] No State Of The Art Counter To whom it may concerns, Currently I am building a DIY frequency counter. Since this is my

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Achim Vollhardt
Hi Tijd, what about MC12026A ? Farnell No. 1468725, 10 EUR single quantity 1.1 GHz div 8, 9, 16 or 17 Project sounds great! 73s Achim, DH2VA ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Gerhard Hoffmann
Am 06.01.2011 20:02, schrieb Tijd Dingen: Also note the glaring lack of a prescaler. This can and will be added at a later date to extend the range of the counter. For now I just want to get the basics working properly first. On the subject of prescalers, does anyone know where to order

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Tijd Dingen
of timing granularity is possible with the carry chain or similar structures on those Actels? regards, Fred --- On Thu, 1/6/11, shali...@gmail.com shali...@gmail.com wrote: From: shali...@gmail.com shali...@gmail.com Subject: Re: [time-nuts] No State Of The Art Counter To: Time-Nuts time-nuts

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Magnus Danielson
On 01/06/2011 08:02 PM, Tijd Dingen wrote: To whom it may concerns, Currently I am building a DIY frequency counter. Since this is my first serious counter project I am trying to keep things simple, hence It Will Not Be State Of The Art. Maybe a not-too-difficult hobby level counter will be

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Gerhard Hoffmann
Am 06.01.2011 22:45, schrieb Gerhard Hoffmann: I was thinking about abusing the built-in SERDES-Units in the Spartan6 as a prescaler. It would be necessary to sort out the transitions after the 1:16 gearbox, but given the amount of logic in a Spartan6 that should be possible. While I have not

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Magnus Danielson
On 01/06/2011 11:54 PM, Gerhard Hoffmann wrote: Am 06.01.2011 22:45, schrieb Gerhard Hoffmann: I was thinking about abusing the built-in SERDES-Units in the Spartan6 as a prescaler. It would be necessary to sort out the transitions after the 1:16 gearbox, but given the amount of logic in a

Re: [time-nuts] No State Of The Art Counter

2011-01-06 Thread Hal Murray
[context is SERDES inputs to FPGA] Also, one has to count the number of 0-1 transitions in each word, such that the event counter can be accumulated with the contribution from each word. That gets complicated. My straw man would be to get a single transition per word working first.