Clearly you don't have kids..
I was king until they were teenagers..then humble pie made with fresh crow was a consistent diet until they were in their 20's..then I became smart again.
jn
Clearly you don't have kids..
I was king until they were teenagers..then humble pie made with fresh crow was a consistent diet until they were in their 20's..then I became smart again.
jn
Hahahaha! I have two teenagers now- My girl, oldest, is 15 and I know what you mean. My boy, just turned 13 and I can still (barely) beat him in wrestling, so I have his respect... for now!
I have had convo's with each of them that included the phrase, "You know what... that's pretty dang smart. Ok, just forget what I said- let's go with your idea."
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Clearly you don't have kids..
I was king until they were teenagers..then humble pie made with fresh crow was a consistent diet until they were in their 20's..then I became smart again.
jn
“When I was a boy of 14, my father was so ignorant I could hardly stand to have the old man around. But when I got to 21 I was astonished at how much the old man had learned in seven years.” (Mark Twain)
My dad and I still battle when he too confidently wanders into my domain of expertise and I have to correct him. He doesn't do well with being wrong much less dead wrong.Doesn't help we're both know it all types. (I clearly don't have kids)
Of course there's huge swaths of his expertise that I don't even know I don't know.
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It was just a standard unbalanced RCA interconnect, with the shields connected at both ends.
The arrows simply appear to be a marketing ploy in this instance.
He probably knew that. Which end to ground a shield depends on application details. The main point is that such a situation is not what most people mean by 'directional cables' although it may be that some cable vendors deliberately (or ignorantly?) conflate this with cables which claim to have had their copper drawn in a particular direction (or whatever) in order to spread confusion. Ensuring that a real phenomenon and an imaginary phenomenon have the same name is a good way to make it harder to argue against the imaginary phenomenon; when you try to point out the difference peoples' eyes just glaze over and you get accused of peddling 'conventional engineering'.Jakob2 said:
@Galu,
thanks for the note.
@DF96,
I don´t know either. Maybe it is deliberately, maybe it was randomly happening or it might even been the STP case (shield connected only at one end) where people noticed it and - as it happens imo quite often - the directionality issue suddenly took on a life of its own; people were noticing the arrows asking which way to connect, another answered but forgot to explain or even didn´t know about the physical reason and voila a new child was born.
Isn´t the other way even more damaging? If you don´t mention the case where directionality might have a justification then people tend to think it was neglected on purpose or due to non-knowledge which makes it imo even harder to argue in other cases.
thanks for the note.
@DF96,
I don´t know either. Maybe it is deliberately, maybe it was randomly happening or it might even been the STP case (shield connected only at one end) where people noticed it and - as it happens imo quite often - the directionality issue suddenly took on a life of its own; people were noticing the arrows asking which way to connect, another answered but forgot to explain or even didn´t know about the physical reason and voila a new child was born.
Isn´t the other way even more damaging? If you don´t mention the case where directionality might have a justification then people tend to think it was neglected on purpose or due to non-knowledge which makes it imo even harder to argue in other cases.
A mains cable with connectors is usually directional, in the sense that it can't be physically connected the wrong way round. This, of course, proves that cables can be directional - in this case for safety reasons.
A piece of mains cable without connectors should not be directional, but I expect someone somewhere is adding arrows and increasing the price accordingly.
A piece of mains cable without connectors should not be directional, but I expect someone somewhere is adding arrows and increasing the price accordingly.
Interesting. I use Triax cable almost every day in my work. It has long been the standard way to connect a video camera to its control unit (CCU). It's a two way signal flow and includes power for the camera. I think that both shields are connected at both ends. Normally the camera isn't grounded to anything else, much like a microphone, so it becomes the end of the cable.
Nice to know that triaxial cables have other uses.
Ditto XLR cables and video camera triax. Very frustrating to run a few hundred feet across a venue only to find it's the wrong direction. That why they make turnarounds.
BNC and Ethernet cables don't have that problem, bless them.
Triax is standard for electrometers also and with one of the insulators made of special low mechanical noise material.
It's been an extremely 'arrowing debate, so allow me to unconfuse you!
Electron flow <---->
Signal flow ---->
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