CTC2B Component Video Monitor

[Tomcomm]

CTC2B Component Video Monitor
Now that the 21CT55 's PQ is at least as good as it was before the FBX meltdown I intend to resume my implementation of 400 line resolution component video processing in addition to the present 256 line resolution composite processing, hopefully. I have been off and on modifying my 21CT55’s CTC2B chassis to process external component video since January 2010. The CTC2B seemed the ideal candidate since it uses low-level matrixing and has potentially >4mhz bandwidth video CRT drivers. I have progressed to the level of working out all the required interfacing and have constructed one of three RGB channels feeding the three CTC2B CRT driver boards. I have all the notebook entries complete with waveforms to finish the switchable dual composite / component CTC2B chassis. Seems the three components: Y, Pr, and Pb, are available on three of my DVD players. Y is the luminance with sync that has no 3.58mhz chroma messing it up so it can extend the baseband to 5mhz which equals over 400 lines resolution, where all our roundys cut off at 3.2mhz or 256 lines! I think I can extend my 21CT55's original final three stages of CRT drivers to possibly 5mhz without chroma interference. It would be great to see the resolution chart wedge with its lines displayed to 400 lines without all the chroma artifacts we see now. My CTC2B chassis is not constrained by the "restoration" consideration and has never processed the deceased NTSC RF/IF programmed inputs. It has always performed as a pure composite video monitor, driven from DVD, Laser Disk and S-video VCR. The CTC2B has always utilized a solid-state external video op-amp that provides a "perfect" DVD quality 480 line resolution, 75ohm, 3vpp signal into the 2B’s 1st video amp grid. It also supplies the same 75ohm video at 1vpp to my two comb-filtered Sony monitors and a Leader waveform monitor. Two external video sources can be selected with a toggle switch, each with individual level and offset controls. Presently I run a DVD player with the DVE test disk into one input and a second DVD player with JPG picture playback capability into the second input. Both composite and component video outputs are available from both DVD players for comparison purposes.