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Author Topic: Scandoubler help  (Read 2627 times)

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Offline OrjanTopic starter

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Scandoubler help
« on: December 19, 2004, 03:22:15 PM »

I recently got an ACT MV1200 scandoubler ( http://www.amiga-hardware.com/mv1200.html ) but I am having trouble getting it to work as it should...

Before I got it, I always thought that scandoublers were plug ´n play, ie. plug it in, connect a VGA monitor, and it should work. But this doesn´t seem to be the case.. My monitor wont display anything when it is connected..

I have been told to select a VGA compatible screenmode ( Don´t know how to do this, by the way ) but I always thought that was for when you only had the 23->15 pin converter connected?

I tried to run a game ( NDOS ) with the scandoubler connected, but it wouldn´t show anything on the monitor then either.. Should it, or will it only work with Wb screens if I select a VGA compatible screenmode?
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Offline OrjanTopic starter

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Re: Scandoubler help
« Reply #1 on: December 19, 2004, 06:44:23 PM »

Well, thats the strange part... I have yet to find any jumpers...  :-?
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Offline OrjanTopic starter

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Re: Scandoubler help
« Reply #2 on: December 19, 2004, 07:42:48 PM »

I have opened it up, I still can´t find any jumpers... And I have pictures to prove it... :-)
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Offline OrjanTopic starter

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Re: Scandoubler help
« Reply #3 on: December 20, 2004, 08:00:42 AM »

Well, I´m beginning to doubt it is the Scandoubler I provided the link for... There seems to be a couple more with identical cases, except there are writing and stuff on them, which led me to believe it was the ACT one.. But mine doesn´t have any jumpers at all...  :-(

http://www.amiga-hardware.com/ezvga.html
http://www.amiga-hardware.com/scandoublerff.html
http://www.amiga-hardware.com/toastscan.html

At first I thought they were all clones and were basically identical, but mine doesn´t have any jumpers... It does have a hole in the case where the jumpers are supposed to be, and "Enable" and "Phase" etched into the case..  :-?
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Offline OrjanTopic starter

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Re: Scandoubler help
« Reply #4 on: December 24, 2004, 09:37:11 AM »

I checked my monitor out, and the horizontal scan range is between 31 and 80 kHz.. Does anyone know what frequency the scandoubler puts out?

I tried turning the finetuning screw, but it didnt have any effect..
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Offline OrjanTopic starter

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Re: Scandoubler help
« Reply #5 on: December 24, 2004, 10:05:00 AM »

Ok... So if I leave it for a while and wait for it to get warm, it might go above 31kHz?
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- Seymore Cray, on virtual memory.
 
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