I'm dealing/ learning with a new display system, the Ampro 3600...so far I can say it's convergence is rock solid.
It does however have a trait that has me puzzled, and this happens to everyone of the 3600s we've had up and running (five so far)
When you get into an H-width adjustment between 88 and 96 the picture starts to distort real bad, it's never the same setting from pj to pj, but always the same effect.
My guess it the H drive circut is clipping...really no big deal I suppose, just back it down until it stops, then back it down a couple more notches...However...
I'm wondering if shortening the Horizonal Front and Back porches will stop this.
I"m I correct in thinking that by shortening both porches retrace time is also shortened?
I realize the guns need a certain amount of porch to stabilize...the back porch would be important for stabilization prior to drawing the active image...and the front porch to prepare the gun to blank and sync.
My question is how much time, or how many pixels are needed for these functions?
I suppose it varies with projector types?...and is this stabilization a function of the tube's amplifier?
I would think the shortest porches would be the easiest on any pj???
After all, any drawing by the guns that are not active image would be a waste (other than stabilization pixels/time) Wouldn't it????
Yes, my brain is starting to run wild again.
It does however have a trait that has me puzzled, and this happens to everyone of the 3600s we've had up and running (five so far)
When you get into an H-width adjustment between 88 and 96 the picture starts to distort real bad, it's never the same setting from pj to pj, but always the same effect.
My guess it the H drive circut is clipping...really no big deal I suppose, just back it down until it stops, then back it down a couple more notches...However...
I'm wondering if shortening the Horizonal Front and Back porches will stop this.
I"m I correct in thinking that by shortening both porches retrace time is also shortened?
I realize the guns need a certain amount of porch to stabilize...the back porch would be important for stabilization prior to drawing the active image...and the front porch to prepare the gun to blank and sync.
My question is how much time, or how many pixels are needed for these functions?
I suppose it varies with projector types?...and is this stabilization a function of the tube's amplifier?
I would think the shortest porches would be the easiest on any pj???
After all, any drawing by the guns that are not active image would be a waste (other than stabilization pixels/time) Wouldn't it????
Yes, my brain is starting to run wild again.