Xref: utzoo comp.sys.amiga:63218 comp.sys.amiga.hardware:2922 Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!tut.cis.ohio-state.edu!ucsd!nosc!logicon.com!tots!tep From: tep@tots.UUCP (Tom Perrine) Newsgroups: comp.sys.amiga,comp.sys.amiga.hardware Subject: Re: Extension cords in general: Getting away from it all. Summary: how to build a video extension cable for a Sony TV/Monitor Message-ID: <169@tots.UUCP> Date: 7 Aug 90 17:14:42 GMT References: <85117@srcsip.UUCP> <168@tots.UUCP> Reply-To: tep@tots.Logicon.COM (Tom Perrine) Organization: Logicon, Inc., San Diego, California Lines: 99 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 Logicon |UUCP: nosc!hamachi!tots!tep Tactical and Training Systems Division |-or- sun!suntan!tots!tep San Diego CA |GENIE: T.PERRINE "Harried: with preschoolers" |+1 619 455 1330 Home of the _Tower Operator Training System_ as seen in the SunTech Journal.