EtherRegen A to B side and b to A side SQ comparison

[R1200CL]

On 1/25/2021 at 6:49 AM, JohnSwenson said:

There is a slight addition phase noise going from B->A as opposed to A->B. This is because the clock is in the B side and has to go through an isolator to get to the A side.

 I suppose the same apply when an external clock is in use ?

 

On 1/25/2021 at 6:49 AM, JohnSwenson said:

The isolator we use has quite low additive phase noise, but it is not zero. 

So I’m general, isolators will degrade a clock ? It’s a bit OT, but if an external clock has isolated outputs, one should expect some degradation?

 

Will an isolator be used on sine wave or square wave ?

(As all square is first a sine). 

[R1200CL]

@Superdad

I understand, I want get an answer, or not the answer I want, but do you think an updated version of EtherRegen with also fiber out is B side ? (Yes in order to use on opticalRendu). The optoRegen 😀

Why not make separate clock inputs on each side of the moat ?

I guess not, cause then the clock cable will be the one braking isolation all the time. 

Isn’t technical possible to use fiber as clock cable? Any drawbacks ?

And wouldn’t fiber also remove the need of an isolation circuit?