New monitors on old machines

This thread summarizes the issue... http://www.vintage-computer.com/vcforum/showthread.php?t=4554 Indeed, a series of DACs would be needed to convert the T2K TTL to analog for modern monitors but it doesn't solve the scanning frequency. I get there's an app note on Analog Devices or National's Web sites... Rich Rich Cini Collector of classic computers Lead engineer, Altair32 Emulator Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ Web site: http://www.altair32.com/ /***************************************************/ -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Chris M Sent: Wednesday, November 01, 2006 8:31 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: New monitors on old machines --- "Richard A. Cini" <rcini at optonline.net> wrote: Sorry dude. The T2K and most things from that era output ttl (digital) color information. Modern multisyncs require analog input. Ain't happening. Besides, modern multisyncs will probably only sync down to original "low-res" VGA hsync frequencies (31.5khz). The 2K outputs 24-26khz, I don't remember exactly. There are a number of hurdles to overcome to get something like that working with a modern monitor. As a side note, I've requested info on the scan doubler made by Princeton. It allowed you to use a CGA card with one of their monitors that took ~400 lines of res like a 2K. I guess it was a good idea for people who had a CGA card, intended to upgrade it at some point, but avoid obsolescence w/the monitor. The reason I decided on buying a multisync right off. I guess I could contact Princeton... And the other thing that would be nice is a way to convert a ttl signal to analog. Doesn't sound too hard to me... ____________________________________________________________________________ ________ We have the perfect Group for you. Check out the handy changes to Yahoo! Groups (http://groups.yahoo.com)