[time-nuts] Affordable (cheap) COTS / eBay kit for TIE / 1PPS phase comparison

Wojciech Owczarek wojciech at owczarek.co.uk
Thu Jan 23 08:46:26 EST 2014


Thanks for your suggestions so far everyone,

The picPET would be a great solution if it could run at higher frequencies
- but now there's a separate thread about that :)

Magnus - my reference is a Brilliant Telecom (now Juniper Networks TCA
series) PTP grandmaster (TCA8000), which does PTP and has
E1/T1/BITS/frequency outputs. Internally it uses a Trimble Resolution T
board for GPS/PPS. I think it could run Rubidium if I replaced the OCXO
with a SpectraTime LPFRS.

I'm familiar with Stable32 and I have a basic understanding of frequency
stability / phase noise measurement concepts, but for the most part I will
be simply looking at realtime phase offset measurement to test filtering
and PI servo optimisations.

Regards
Wojciech


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