Thanks a lot for taking the time to explain to us your view on the relationship between digital cables lengths and jitter. It gives valuable information for anyone using a usb to spdif converter as a transport with an external dac which obviously requires the use of a digital cable and choosing the adequate length (shorter or longer).
If you don't mind, I am going to link your posts in the main review (as well as Steve Nugent's article) so that readers can be aware of both views and make up their minds and choose the right length of digital cables accordingly.
I will be glad to explain why that is.
It was wise of you to point out that cable impedance IS related to the issue (SPDIF to USB conversion and USB to SPDIF). And of course, what I stated would be good information for ALL cables including USB. It is always good to have an idea about the signal rise time, and the delay (cable length), which tells one if they need to terminate or not.
But it seems to me that some people here rather not hear it.
One more time: if anyone has a "different view" of reflections then what I stated, they just do not know what they are saying. The subject is not about wishful thinking, "adopting a view" or about making things up as you go along. As a professional, I have no need, time or desire to argue with non professionals that have no clue. I stated what I did as a "public service". I have no commercial interests in convincing anyone to buy shorter cables, longer cables or any cables. I like to enlighten people because I am for great audio.
The first time I had to focus on the subject of reflections was around 1970. I was working at EH research (California) where my job was to design a state of the art in high speed integrated circuits tester for IBM. The million dollar system had 2 huge chassis, each with 24 large printed circuit boards, and it was all controlled by an IBM 1130 computer. Toshiba also bought a few of that system. Much of the technology I used was ECL (emitter coupled logic), and the main maker of the logic was Motorola. At that time, a 1nsec (MECL III) rise was considered real fast, and 3nsec (MECL 10K) was very fast also. Motorola called the IC's family MECL (M for Motorola). At that time, Motorola supported thier MECL IC's with a handbook called "Designing with MECL integrated circuits".
I mention that old publication because it is a very good material for anyone that wishes to read about reflections and how to deal with the issues. I suspect one can get their hand on that publication - they printed a lot of them over many years. That is how I focused on reflections, so it may help others interested in the subject.
Of course there are very many other newer publications that deal with line and cable terminations. One can look at application information regarding line drivers and receivers. The information is all over the place. This is all basic general engineering stuff, not just digital audio stuff, and no one outside of some fringe group in audio has the "hutspa" to go against it.
I am sorry if I sound short or harsh, but electronics engineering is not a democracy! Folks do get to "vote" on what they like or dislike. But one does not get to vote on Ohms Law, and 1+1=2 and is not a subject for disagreement or opinions.