mjl@ut-emx.UUCP (Maurice LeBrun) (12/30/88)
I am in the market for a new monitor for my 1000 since my 1080 died, and am seriously considering getting a Mitsubishi Diamond Scan. A multiscan seems to be the way to go for the long run, and the Diamond Scan was given very good marks in the review by Amazing Computing (Oct 88). I have seen it advertised regularly in Computer Shopper at about $500, which seems pretty reasonable. Assuming someone out there actually has one, I'd like to know: 1) How has it performed overall in the time you've had it (any glitches, unusual behavior)? 2) Is the cabling diagram given in AC sufficient for safe & dependable operation? Is there anything a relative novice (in electronics) needs to beware of in constructing the cable? Can one be found commercially? Any information would be greatly appreciated. Maurice LeBrun | Confusion will be my epitaph, Institute for Fusion Studies | as I crawl a cracked and broken path University of Texas at Austin | If we make it, we should all sit back and laugh Internet: | But I fear tomorrow I'll be crying... mjl@fusion.ph.utexas.edu | King Crimson
lee@uhccux.uhcc.hawaii.edu (Greg Lee) (12/30/88)
From article <9133@ut-emx.UUCP>, by mjl@ut-emx.UUCP (Maurice LeBrun): " I am in the market for a new monitor for my 1000 since my 1080 died, " and am seriously considering getting a Mitsubishi Diamond Scan. A I've had one for about 6 months now. Works fine, except the display is a little dimmer now than when it was new. Maybe because I keep it on continuously, with contrast and brightness turned down when I'm not using it. The color balance on mine changes slowly for around 20 minutes after it's turned on. I have to unplug the cable to my Amiga in order to reboot. Probably I didn't make the cable quite right. Sawing off the end of an rs232 connector and soldering all those tiny little wires was a pain. There must be a better way ... Greg, lee@uhccux.uhcc.hawaii.edu
mikes@lakesys.UUCP (Mike Shawaluk) (12/31/88)
In article <2901@uhccux.uhcc.hawaii.edu> lee@uhccux.uhcc.hawaii.edu (Greg Lee) writes: >I have to unplug the cable to my Amiga in order to reboot. Probably >I didn't make the cable quite right. Sawing off the end of an >rs232 connector and soldering all those tiny little wires was >a pain. There must be a better way ... > > Greg, lee@uhccux.uhcc.hawaii.edu I don't think this has anything to do with the quality of your cable, but rather a load factor on one of the sync outputs of the Amiga; I seem to remember reading that one of these "outputs" is actually both an input AND an output, for genlock use, and the hardware checks to see if the line is being asserted (i.e., is an input) during power-up. The solution to the problem is to buffer the line in question via a simple TTL-type chip or transistor, but I don't have the details; can someone else out there help? -- - Mike Shawaluk ...!uunet!marque!lakesys!mikes
rhir_ltd@uhura.cc.rochester.edu (Bob Hirosky) (01/01/89)
In article <9133@ut-emx.UUCP> mjl@ut-emx.UUCP (Maurice LeBrun) writes: >I am in the market for a new monitor for my 1000 since my 1080 died, >and am seriously considering getting a Mitsubishi Diamond Scan. A >multiscan seems to be the way to go for the long run, and the Diamond >Scan was given very good marks in the review by Amazing Computing (Oct >88). I have seen it advertised regularly in Computer Shopper at about >$500, which seems pretty reasonable. Assuming someone out there >actually has one, I'd like to know: >Maurice LeBrun | Confusion will be my epitaph, >Institute for Fusion Studies | as I crawl a cracked and broken path >University of Texas at Austin | If we make it, we should all sit back and laugh >Internet: | But I fear tomorrow I'll be crying... > mjl@fusion.ph.utexas.edu | King Crimson I've had my Diamond Scan for about a year now and it seems to be doing just fine. My only complaint is that I hate those scanlines in between the letters on the screen, but that's my amiga's fault. As far as wiring goes, I WOULD NOT trust the AC article that appeared a few months ago. ie who wants to risk "circutry failure" Here's my wiring diagram: amiga Dia. Sc 3 ---------------R----------------- 2 I use all these grounds 16 ------------gnd----------------- 3 because my video is 4 ---------------G----------------- 4 carried by three coax 17 ------------gnd----------------- 5 cables. 5 ---------------B----------------- 14 18 ------------gnd----------------- 15 19 -----------sync gnd------------- 1 Now the tricky part: -------- 11 -----hsync--|1 2|--------- 16 | | | | 12 -----vsync--|3 4|--------- 17 | | | | 23 ----5V------|14 | | | 20 ---gnd------|7 | -------- 74ls04 Why all this? Well I did it because it was the first combination I found that worked, but a while ago someone posted a similiar fix. He said that the monitor loaded the sync outputs and this caused the computer to look for an external system clock, hence nothing happens. Any comments out there? Goood luck, Bob rhir_ltd@uhura.cc.rochester.edu bob@uorhep.bitnet