tep@tots.UUCP (Tom Perrine) (08/08/90)
OK, I have had a *lot* of requests for the "monitor extension cable"
article reference, so here it is.
The article is "The Sony Connection", in Amazing Computing Vol. 2
#12, from 1987. It describes how to hook up a Sony KV-20XBR monitor. I
used the same stuff to hook up my KV-27XBR, which is the same, except
for screen size.
Both of these monitors have the 34-pin connector on the back; Sony
sells a PX-34 plug for mucho bucks that fits it. (I bought mine from a
surplus house for about $2.) I have no idea what this connector is
really called.
"Recent" Sony TV/monitors may or may not have this connector on the
back. I bought mine in 1987, and I have had differing reports of
whether or not this connector is on the later models.
I recommend building at least a 10 foot cable for a 26" monitor.
Of course, you really should get the article, as it explains about the
connector, etc. But just in case you can't...
*********
Enter disclaimer mode: This information is provided for amusement
only. If you fry your Amiga or monitor, you are on your own! If you
are not comfortable with soldering small connections, or familiar with
connector pin numbering, you may not want to try this from these
directions. Get the article, if at all possible...
Kids! Don't try this at home!! :-)
**********
I'm fairly handy with a soldering iron, and I had to work to get the
itty-bitty coax connected to the itty-bitty pins, so fore-warned is
fore-armed (or 1/2 an octopus). If you have, or can borrow a
"third-hand", you will save yourself a lot of aggravation.
OK, the "cable" is actually four separate coax cables, one each for
Red, Green, Blue and SYNC.
IF YOU HAVE THE SAME CONNECTOR on your TV, the important pins are:
13 GROUND
25 RED INPUT
26 GREEN INPUT
27 BLUE INPUT
30 HORIZONTAL SYNC OR COMPOSITE SYNC INPUT
Note that the numbering for the connector is kinda nonstandard:
18 ____ 34
+-------------| |------------+
| |
+-----------------------------+
1 . . . 17
Make the connections using any miniature 75-ohm coax, Beldon 9221 or
8218. Don't try Radio Shack, they will try to sell you RG-59U which is
way too big. I just called a local video shop (that also does repairs)
and they just said, "How much do you want?".
Connect:
Amiga Sony
cable 1 3 25
shield 16
cable 2 4 26
shield 17
cable 3 5 27
shield 18
cable 4 10 30
shield 20 13
Notes:
1. The Red, Green and Blue inputs are dual-purpose. If you ground pin
21, the inputs are IBM-PC style digital RGB, but we want analog signal
levels, so leave pin 21 alone.
2. There are external audio connections, which I don't use, on pins 24
(left) and 20 (right). IF pin 34 is connected to +5v (from pin 1 or 2)
AND the Sony is in RGB mode, THEN these inputs will be connected to
the speakers. I find it MUCH easier to bring in the Amiga audio on
Video 3, then I use the remote to select Video 3 AND then RGB.
Take your time. Have fun. Don't smoke your tube. Enjoy your favorite
flight simulator.
Tom Perrine (tep) |Internet: tep@tots.Logicon.COM
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Tactical and Training Systems Division |-or- sun!suntan!tots!tep
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