14 Jan
1998
14 Jan
'98
4:05 p.m.
connectors, like the 15-pin VGA connector in a E-size
shell. A lot
of my DG equipment uses an even higher density connector, 23 pins
in the same shell. While the "subminiature" series is interchangable
between manufacturers, the higher density versions often are often
incompatible. (Take a look through the nearly 300 pages of connectors
in a Newark catalog for many of the more common variations!)
The VGA connector is a DE-15 and is standard. There is also a high density
DB connector (44 pins, I think), used rarely.
It is true about the standards going out the window. Believe it or not,
Cisco jams _60_ pins into a DA connector.
The D connector is an oldie - it was used by the military for many years
in aircraft radio and radar gear. I once (may still have) had a chart with
just about all of the variations of the standard (probably a MIL-C-
thingie), including the weird ones with coax and high current pins.
The only weird variation to survive is the DB-13W3, used for Sun video.
William Donzelli
william(a)ans.net