So, let me put my thoughts out there. Based on everyone's input above:
If the Compact Mac horiz. sync rate is 22 KHz and even minor deviations will cause the monitor to fail and monitor manufacturers adapted their existing monitors to create custom Power R video adapter Mac versions, why then does the Power R use the unique 22.3 KHz? Did that ensure compatibility with only custom Mac specific monitors designed to work with it and no other adapters (Like a home-brew 22 KHz TTL)? I mean if the industry standard Max EGA horiz. sync rate was 21.8 KHz and the Mac was 22 KHz, if the Power R could increase the rate to 22.3, couldn't it have come down to the industry standard too? Clearly, those adapters designed to display the Mac image on a standard TV had to drop the rate down into the 15.7 KHz video signal.
Which brings me to another question: Do CGA & EGA both require a specific pixel resolution, meaning a 512 horiz. resolution can never be displayed on a CGA or EGA monitor which require 640 pixels across? Also, just what is a TTL monitor? Is this different from and MDA or Hercules based monitor? How can these monitors display graphics at all if they have no pixel control? How can they accommodate a Mac signal at all if they are designed to display a significantly wider horiz. image than the Mac?
More brain-ticklers to come.
If the Compact Mac horiz. sync rate is 22 KHz and even minor deviations will cause the monitor to fail and monitor manufacturers adapted their existing monitors to create custom Power R video adapter Mac versions, why then does the Power R use the unique 22.3 KHz? Did that ensure compatibility with only custom Mac specific monitors designed to work with it and no other adapters (Like a home-brew 22 KHz TTL)? I mean if the industry standard Max EGA horiz. sync rate was 21.8 KHz and the Mac was 22 KHz, if the Power R could increase the rate to 22.3, couldn't it have come down to the industry standard too? Clearly, those adapters designed to display the Mac image on a standard TV had to drop the rate down into the 15.7 KHz video signal.
Which brings me to another question: Do CGA & EGA both require a specific pixel resolution, meaning a 512 horiz. resolution can never be displayed on a CGA or EGA monitor which require 640 pixels across? Also, just what is a TTL monitor? Is this different from and MDA or Hercules based monitor? How can these monitors display graphics at all if they have no pixel control? How can they accommodate a Mac signal at all if they are designed to display a significantly wider horiz. image than the Mac?
More brain-ticklers to come.