[time-nuts] TIE measurement for arbitrary frequency oscillator

[Said Jackson]

John,

Look into getting a cheap pld reference board. Here is one for $39 from Digikey:

ICE40HX1K-BLINK-EVN

Feed it from your signal generator. Then program a counter that counts down 7362000 steps and outputs a short pulse on underflow thus generating a 1pps pulse. You simply change the counter value to adjust for different device test frequencies. This can be done in about 40 lines of code.

Then get a $800 HP 53131A counter to measure the time interval from your DUT to your Rb reference and feed that data into Stable32 to generate TIE plots.

This is how we do it here.

Cant get much cheaper than that.

Bye,
Said



Sent From iPhone

On Mar 19, 2013, at 15:08, John Doering <johndoering57 at gmail.com> wrote:

> Bob,
> 
> I am a grad student working part time for a frequency generator
> distributor. For the most part, it's just buy/resell so we don't do
> production sized testing, rather specific tests when it's too expensive to
> outsource or we already have the necessary setup. However, we've had quite
> a few requests for TDEV & MTIE analysis, so we started looking into ways to
> do it in house for the future. I've been seeing a wealth of information on
> these boards, figured it was worth a shot to ask.
> 
> It's not a garage operation budget, but the size of the company doesn't
> permit for more expensive pieces of equipment either (like the symmetricoms
> that run for 25-30k)
> 
> I do most of the instrument and test application programming. For stability
> processing, we use stable32.
> 
> John
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.