As for HDMI, it has incredibly few uses into terms of professional production (outside of connecting monitors) setups, but still can be made secure, as seen here:
My wife does AV production work and loves them too. Plus, in a pinch, you can just use a regular old Walmart Ethernet cable. Really handy to have a fallback (unlike e.g. XLR, where you're trying to find a pro audio shop)
Can't count the number of times I've had colour production go wonky just because of a tiny bump of the scart cable.
I remember being pretty impressed that that the cable connected to the monitor with five BNC connectors rather than the usual VGA port or termination inside the monitor case. (Of course I doubt it did me any good at all b/c I just connected it to an ordinary VGA port on the other end.)
1] A Sony GDM-17SE1 if anybody remembers those. (Couldn't quite swing the slightly nicer Nanao FlexScan that could do native 1600x1200.... but the Sony was an excellent display anyway.)
I used to crimp/solder BNCs to cables, and I was so happy when we could switch to SDI instead of analog video cables. Each cable for the analog component video cables had to be the same length (within a very small tolerance) or the signals would be out of sync causing the color to not be reproduced correctly. Some devices had timing that you could adjust to compensate, but cable length was important. If you screwed up one of the cables and needed to cut off a bit to redo the end, you had to do the same "correction" to all of the other cables to match.
I bought my 17 in around 94-95 and used it for at least five or six years. It started out attached to a 486/33 and wound up attached to a P5/100 and then a custom K6/233 I bought when I got my first job, had for about a month, and then sold to buy a Thinkpad 560. (The same job that paid for the fancy desktop also kept me away from it, so I never really used it.)
It was probably around the same time you had yours, but I briefly did buy another desktop machine with a Dell branded 19" Trinitron. It was also very nice, but weighed a ton. (It was also the last CRT I bought.... everything since has been various LCDs, and aside from some crappy TN laptop displays, it's generally been a big improvement.)
Edit: I should add about these Trinitron displays... there are people that complained about the stabilization wires on Trinitron CRT's. I was able to see them, but they weren't an issue and the rest of the display quality was so good it didn't matter anyway. (At least to me.)
Well, at least I got an oscilloscope for free that way. The inputs were flakey, and it was rejected by the calibration service. I opened it up, and re-soldered the printed circuit mounted input connectors. Lovely scope.
BNC connectors hit a great sweet-spot of being cheap and easily available for bulkhead mounting. I've used them for power in data loggers before, since they're positive locking. Felt a bit dirty, but just pretended I was in a research lab where BNC for DC power is very common.
Speaking of connectors, once upon a time there was the IBM PC RT, whose mouse and keyboard connected with these:
Those are the only connectors I've ever been able to plug into the back of a box, from the front, without looking. They were wonderful (he says, tha remembering at the time he was the guy who got to crawl around under peoples' desks).
I was eventually told that, because the actual connectors were the same, they had to add the keyed moldings to prevent the hardware from being destroyed by being plugged into the wrong spot.
Indeed, it has been "bayonet network connector" in my mind. Must have been some folk etymology that got stuck.
I mostly see them used on smaller RF gear like WiFi antennas, and whip antennas on hand held radios. The threaded design provides a more secure mechanical attachment. The classic blue Linksys routers and AP's use a reverse TNC connector for the antennas.
The main thing SDI & coax has going for it is its robustness, especially for 3G-SDI signals, so I guess it will live on there. But BNC & SDI is on the way out, certainly for broadcast. Its so much cheaper to use Mellanox, 25G/100G Ethernet instead.
The above supposedly explains why coax is better for high frequency, but the sentence isn't parsing for me. Can anyone explain it a bit more?
It's funny, keeping everything else constant, the center conductor can move quite a bit away from the exact axial center of the shield before the impedance changes very much.
PS. Neill, not Neil
HP/Agilent/Keysight uses a "Precision BNC" connector on their scopes that easily outperforms N-type connectors in frequency response but is rather expensive to produce.
SMA connectors are actually pretty crappy but are cheap, small, and ubiquitous. Their size and forgiving PTFE dielectric makes them very forgiving up to 10 GHz or so from a frequency response view point.
Really good high frequency connectors are going to be the precision connectors, 3.5mm 2.92mm etc. down to 1.0mm which can go up and over 100 GHz where you should really be using wave guides anyways. These types of connectors are very expensive so you rarely see them in production electronics unless absolutely required.
Edit: and all this with connectors that are dirt cheap.