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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Daniele on March 20, 2007, 11:51:25 PM

Title: VGA Monitor 15 khz frequency
Post by: Daniele on March 20, 2007, 11:51:25 PM
Hello

can someone tell me if exist on the market a brand new monitor VGA that handles 15 khz of horizontal frequency?

Thanks
 
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 09:34:08 AM
LCDTV they handle 15KHz through the SCART socket.
Title: Re: VGA Monitor 15 khz frequency
Post by: Daniele on March 21, 2007, 11:05:45 AM
no one pc vga monitor still on sale?
I have heard they are but expensive!
Let me know!
Title: Re: VGA Monitor 15 khz frequency
Post by: reddwarfer on March 21, 2007, 12:28:36 PM
You could try and find a multiscan monitor. My two scan down to 15kHz and scasn up to around 60 to 70kHz I think.
The multiscans are very expensive and im not sure whether anyone makes them any more, I was lucky with mine, got some in a haul of Acorn stuff my old school was getting rid of.
Title: Re: VGA Monitor 15 khz frequency
Post by: keropi on March 21, 2007, 12:34:16 PM
...better get a scandoubler , so you have to depend from any ancient monitor...
Title: Re: VGA Monitor 15 khz frequency
Post by: ddniUK on March 21, 2007, 01:19:09 PM
Microvitec still make multiscan crt monitors for the medical profession. They will do them for private individuals, but it costs lots!!!! £350 for 15" if i remember correctly.  
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 02:11:58 PM
http://www.dynamicdisplay.com/qes2014-192_color_crt_display.html

Realistically if you want to use a CRT you will need a scandoubler or second hand 15KHz monitor.
Title: Re: VGA Monitor 15 khz frequency
Post by: drewz21 on March 21, 2007, 02:15:39 PM
I wonder if Microvitec can make units to be used in the US? If so and it could support all the Amiga modes it sounds like a good deal to me and I just might buy 1 or 2 to replace my aging 1084 and 1960.

Anyone know more about Microvitec?
Title: Re: VGA Monitor 15 khz frequency
Post by: amiga92570 on March 21, 2007, 02:35:46 PM
I believe Microvitec still makes arcade monitors, but they are big.
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 02:52:53 PM
Quote

drewz21 wrote:
Anyone know more about Microvitec?

They are effectively dead. They dont make consumer electronics anymore http://www.microvitec.co.uk/

You are insane if you would pay $600+ dollars for a 14" monitor
Title: Re: VGA Monitor 15 khz frequency
Post by: ddniUK on March 21, 2007, 02:57:17 PM
I spoke to them in the past. Too expensive for me though...

If a group of you got together an order of 5 or so units, then they might be interested in doing a deal??? Why not contact them and see  0044 (0)1274 816700.. I note they have some 15" old stock.
Title: Re: VGA Monitor 15 khz frequency
Post by: drewz21 on March 21, 2007, 03:00:06 PM
Actually insanity is defined as doing the same thing over and over again expecting a different result.

I'm not saying I would pay that much for an Amiga compatible monitor, but it is my own business.    :-P
Title: Re: VGA Monitor 15 khz frequency
Post by: ddniUK on March 21, 2007, 03:13:47 PM
Ok i called them. I can get refurbished Microvitec 1438 14" for £100. Limited stock. List posted here soon.
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 03:54:41 PM
And for £120 you can get a BRAND NEW 15" LCDTV from ASDA (http://www.asda-electricals.co.uk/shop?i=160lgc0XHFv8&vp=5&bg=131&bp=15tv009s&bi=0).

It has a built in RGB Scandoubler, a VGA connector (for RTG graphic card input) and it works as a monitor switcher to switch between AGA and RTG.

AND it has an analog TV tuner and speakers.
Title: Re: VGA Monitor 15 khz frequency
Post by: drewz21 on March 21, 2007, 04:01:39 PM
But will it work for me here in the US (power wise) and display NTSC format which is what I would need?
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 04:06:43 PM
I dont know (why would I?)

You'll have to do some research on the net with that product code.

Although I wouldnt recommend importing one unless you know someone in the uk.
Title: Re: VGA Monitor 15 khz frequency
Post by: Tomas on March 21, 2007, 04:24:08 PM
Does all multiscan monitors work?
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 04:59:47 PM
Nope :-(

Lots of Sony branded multiscan monitors dont sync down to 15KHz.

They have to say on their technical capabilities a minimum horizontal refresh no higher than 15(.75?)KHz
Title: Re: VGA Monitor 15 khz frequency
Post by: steve30 on March 21, 2007, 06:16:31 PM
I got a second hand Amiga branded Microvitec 1438 off ebay last year for about £25.

Works fine except for a bad connector.

I wouldn;t spend £100 on one, I would rather spend that on a graphics card so I can use my Amiga with my VGA monitor.

Although i would rather spend £100 on a 1438 than £100 on an LCD TV anyday.
Title: Re: VGA Monitor 15 khz frequency
Post by: jkonstan on March 21, 2007, 06:23:58 PM
In the USA, is there an LCD monitor that will accept SCART analog RGB input at 15Khz.

 :-)
Title: Re: VGA Monitor 15 khz frequency
Post by: drewz21 on March 21, 2007, 06:42:00 PM
@jkonstan

And where might I find one???  Please!
Title: Re: VGA Monitor 15 khz frequency
Post by: jkonstan on March 21, 2007, 06:55:17 PM
I was looking at the Samsung 940MW SyncMaster LCD on the internet; however, I have not tried and do not own that LCD. Has anyone ever use analog RGB from an Amiga with Samsung 940MW SyncMaster LCD ?
:-)
Title: Re: VGA Monitor 15 khz frequency
Post by: T3000 on March 21, 2007, 09:12:00 PM
loads of info (http://www.epanorama.net/documents/vga2rgb/vgamonitor.html)
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 21, 2007, 09:25:38 PM
All useless... they just tell you how to build the 23-pin to 15-pin VGA adapter (Shiney silver commodore thingy).

Only useful in AGA Workbench using dblPAL and dblNTSC screen modes.

Doesnt work in (most) games or demos.
Title: Re: VGA Monitor 15 khz frequency
Post by: bubba on March 21, 2007, 10:45:50 PM
I've got this Samsung LCD with the SCART connector.  It is fine for games, but text has some artifcating which makes it difficult to read when using workbench.  My 1084s has better picture quality, but I use the LCD because I don't have space for two monitors (my satellite TV and MacBook also connect to the LCD).  I'm planning to get a mediator + vodoo to use for workbench.

-bubba

Title: Re: VGA Monitor 15 khz frequency
Post by: ddniUK on March 22, 2007, 12:01:07 AM
Alexh knows his monitors, I tend to agree with him about LCD TVs...

I have a SD/FF to an LCD monitor, and a 1438 connected to AGA. (dont ask why! :) )

For those that are interested, I got this reply from Microvitec.

"Currently we have 2 Amiga compatible monitors in our second user stock that have been serviced by ourselves.
Prices are £95 each plus shipping cost The monitors have the spec as per Desk-Scan 1402 see : http://www.microvitec.co.uk/products/desk-scan%201402.htm
If either was of interest the easiest way to buy these would be as a 'but it now' item on Ebay and I would list it and forward the link.
 
Your other options are to look for similar items on Ebay as they come up - good luck."


Good luck
Title: Re: VGA Monitor 15 khz frequency
Post by: alexh on March 22, 2007, 07:49:54 AM
LCDTV's are effectively the same as an Indivision / Toastscan Scandoubler. It is an EXTERNAL scandoubler.

They usually have OSD controls to change sharpness and other parameters of the scandoubler (like the screw on the back of the Indivision).

If you have blurry writing on your LCDTV in workbench you should try to adjust the scandoubler through the TV menus.

Also using a Workbench "PAL60" screen mode will help.

Choosing a resolution as close to the panel resolution will also help. The internal scaler in your panel will produce less scaling artifacts with a whole multiple of panel res.

So if it is 1024x768 try for a resolution of as close to (half) as possible.

Remember you also have a flicker fixer so using interlaced workbench modes are fine.