1 Dec
2016
1 Dec
'16
7:47 p.m.
On Dec 1, 2016, at 2:27 PM, Josh Dersch <derschjo
at gmail.com> wrote:
...
The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).
What is a "Winchester connector"? Do you mean a D-sub connector, i.e., with a
trapezoidal shell such as you find on terminal or VGA connectors? Those come in a number
of widths, with names like DE (for the VGA size), or DB (the 25 pin classic RS-232), and
so forth. Often, incorrectly, all are called DB.
Those shells have a variety of choices for pins. They may be two rows of pins (e.g.,
DB-25), or 3 rows (e.g., DE-15). You may also find ones that have just miniature coax
inserts, or a mix of coax and plain pins. The coax inserts are generally larger, such
that it takes up much of the height of the connector. I haven't seen coax pins that
are the same diameter as plain signal pins, that's rather hard to imagine especially
for something as old as an Imlac. Examples of mixed pin D-sub connectors are the Sun
video monitor connectors, with RGB on coax.
paul