interpair spacing

10:31 Oct 11, 2018 

Merci beaucoup pour toutes ces explications très éclairantes.
Oui, en réalité, les deux termes sont cités dans une série d'exemples et le texte se veut beaucoup plus général (il parle des différentes sortes de mémoire et de leurs avantages et inconvénients respectifs lors de la conception d'un système de graphismes embarqué).
Merci encore.

10:05 Oct 11, 2018 

Without more specific context, it's not possible to know if these are differential pairs or not; clearly, your text is just talking generally about pairs (of any kind).
It is not unusual in electronics, and specifically computer-type hardware, to run signals on 'pairs' of conductors, for various reasons and in various ways. Obviously some implementations are going to be more critical when it comes to susceptibility to mutual inteference etc. Supposing you did have a differential pair, running too close to a pair of conductors carrying other signals: interference might result that could become common-mode on the differential pair, potentially leading to all sorts of problems.
But as I say, your text seems to be seeking to discuss this topic in a very broad way.

09:48 Oct 11, 2018 

Pardon, c'est dans la définition qu'on parle de signaux.

Pouvez-vous m'expliquer pourquoi on parle de "paires" ici ? Est-ce que ce sont des paires différentielles ?

22:17 Oct 10, 2018 

What makes you speak of 'signals'? Clearly, here, we are talking about the physical spacing of the actual conductors — which may in some contexts be wires, but here are the conductive 'tracks' or 'pistes' on the PCB.

Of course, any interference or crosstalk will only exist if there are signals being carried on those conductors — but that is surely taken for granted in the discussion here.

And no, although I have certainly encountered these concepts in my 20+ year previous career in electronics, including designing PCBs, it is not something I have so far encountered in my FR > EN translation work. I think it is comparatively unusual to talk about 'pairs' in respect of PCB tracks, since we more usually think of them in terms of cables; but of course, in many situations, there is indeed a 'pairing' aspect to PCB track layouts, and with higher and higher speeds / frequencies and increasing miniaturization, intertrack cross-coupling, whether inter-pair or intra-pair, is an incresing headache and can often be a performance-limiting factor if precautions are not taken.

20:12 Oct 10, 2018 

Oui, j'ai plus ou moins compris à partir des définitions en anglais. Je vois que vous utilisez le mot "conducteur" à la place de "signal". Merci pour cette piste de recherche.
Avez-vous déjà rencontré ce concept en français ?

17:47 Oct 10, 2018 

I'm assuming you have udnerstood from the dfinitions given that intrApair spacing means the spacing between 2 conductors that belong to the same pair; while intERpair spacing refers to the spacing between 2 conductors from different pairs.

Generally, this would be a good configuration:

ll / ll / ll

Whereas this would be bad:

l----l/l----l ... etc.