[time-nuts] Fast frequency counting question

[Tom Van Baak]

> Hi all,
> 
> We have a problem at work where one of our engineers needs to measure
> the start-up chirp in an oscillator destined for a GPS application.
> 
> We are looking for ppb level frequency resolution with sample periods
> around 10 - 20us (yes, that's us, not ms!). The chirp is all over well
> inside 1ms.

Would the end-user allow you to gate the oscillator output
for the first 1 ms thereby avoiding the chirp you're trying to
measure?

/tvb