Yes! About SCART connectors, ...
Tony Duell wrote:
1) It doesn't make particularly good contact with the socket. Often it
comes half-out and you lose video or something
Even while plugging one in, I always end up with an uncertain feeling
about the connector being seated properly.
2) It is in no sense a constant-impedance connector. I
am a great
believer in sending video signals along 75 ohm cable fitted with 75 ohm
connectors, and terminating the input with 75 ohms (any other impedance
would do as well, provided it's constant, and all parts have the same
characteristic impedance). SCART would seem to be a source of signal
reflections
And it does not provide any shields between the audio and video signals,
so I'd expect cross-talk. Although they are spaced pretty far apart, the
relatively large spades might make nice coupling capacitors...
3) Have yuo ever tried to wire one of those infernal
plugs? Particularly
if you're using all the pins?
What sort of cable do use to fit into the strain relief when using all
pins? - The cable should also have different runs for video (impedance
matched), audio (low capacity), and data lines (just well shielded), all
with separate grounds... - Once I find a suitable cable, I might try,
but I think soldering will be the easier part. (I did make my own
Ethernet transceiver cables years ago. AUI provides very limited space
in the connector shell, too.)
I think SCART intended to be a non-proprietary bus for complete
video/HiFi systems, easy to install for people who don't know the
different between an input and output jack/socket: I have heard people
talk about the "line input" of a CD player, for example. Well, you can
put a connector in there, yeah!
Whenever possible, I also prefer more specific connectors (and, yes, BNC
for video and RCA or even XLR for audio would certainly do well), and I
usually have no trouble telling from where to where a cable needs to go,
so SCART doesn't really seem to be made for me.
Many cheap TV sets and satellite receivers have SCART connectors around
here, but my A/V receiver (Onkyo TX-DS939, for those familiar with them)
has none at all. It prefers gold-plated RCA and other connectors,
obviously for a good reason.
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com