[time-nuts] Re: What phase variations to expect in a DMTD due to temperature fluctuations?

[Erik Kaashoek]

Hi John,
Thanks for the practical advice and the measurements.
After ironing out some problems the measurement noise with two equal 
inputs and a tau of 0.1 s is now below 100 fs.
Long term phase stability has also improved and typical slow phase 
variations over an hour, when measured on a desktop in a room with 
people, are now within 4 ps
The next step may be to replace the current plastic enclosure with a 
decommissioned fridge, but that would defeat the idea of having a small 
battery powered portable device.
Erik.

On 24-10-2022 21:49, John Miles via time-nuts wrote:

>    You should see similar sub-picosecond drift figures from your own
> DMTD, given similar conditions.  If not, there will be a reason, one that is
> probably not too hard to address.
>
>