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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Stew on June 28, 2003, 01:33:57 AM

Title: video switcher
Post by: Stew on June 28, 2003, 01:33:57 AM

Just a bone head idea but...

  Can I use a video switch box to use one monitor with several Amigas, and put an external scandoubler/flickerfixer after the switch to allow a svga monitor on all?  Will it lead to any genlock sync issues, as some of these will be toaster/flyers or have external genlocks attached? If all else fails can I add a scandoubler/ff on each and use one monitor on all without any sync problems?


Thanks a bunch

Stew

Title: Re: video switcher
Post by: Ilwrath on June 28, 2003, 03:13:53 AM

Quote

Can I use a video switch box to use one monitor with several Amigas, and put an external scandoubler/flickerfixer after the switch to allow a svga monitor on all? Will it lead to any genlock sync issues, as some of these will be toaster/flyers or have external genlocks attached?

Obviously, you can't scan-double a signal twice.  That'll cause you massive problems.  If you had a scan-doubler that recognized a 30khz+ signal and didn't double it, you might be able to get away with this configuration.  

Now, if you were providing 2 15khz signals into a switcher, with a scandoubler on the output, I'd think this configuration may work.  It may depend on what type of switch you are using, though.  Some higher-end KVM switches try to clean up or boost the signal a bit, and those might have some problems with a 15khz signal.  A basic dumb switch that just passes all pins without touching the signal should work fine, though.  Simpler may be better, in this case.  

Quote

If all else fails can I add a scandoubler/ff on each and use one monitor on all without any sync problems?

This configuration will certainly work.  It's what I use with a Belkin Omni-Cube KVM.  :-)  No problems.  (With the Mr Hardware keyboard and mouse adaptors for each Amiga, it can switch PS/2 style keyboard and mouse, as well as the video.

Title: Re: video switcher
Post by: Stew on June 28, 2003, 06:08:11 AM

Actually I was thinking of the following:

  1 at style switch box (video ser mouse kb) with a 2000 with a pII and 2 4000's with cv64's. I would feed the video through a sd/ff to a video switch box.
  A second at style switch box for a 3000 and 2 4000's with piv's feeding to the video switch box.
  I was hopeing to run all computers at the same time being able to switch the video to a single svga monitor without looseing toaster or genlock sync.
  Thinking about a Mr Hardware adapter for the mouse and kb to put a kvm later.

Well what do you think about the video sync and termination?

Thanks alot

Stew