24-03-2018, 10:53 AM
(This post was last modified: 24-03-2018, 10:57 AM by ppppenguin.)
A few years ago I remember looking at the H parameters* of the 405 signal and how they varied. I can't find my notes at present. The official spec has varied over time. ISTR there was some variation between different versions of the Aurora. All the variations were fairly minor as I recall. If the flyback time of a receiver is close to the H blanking interval then H phasing will be very critical if foldover is to be avoided.
As a designer, like Frank or Darryl (or myself), you are free to vary the H (and other) parameters if you wish. On the whole, as designers we like to stick to published specs as far as possible, unless they are known to give trouble. We are also human and sometimes get things wrong.
*Front porch, sync width, back porch. Together these add up to the H blanking interval.
As a designer, like Frank or Darryl (or myself), you are free to vary the H (and other) parameters if you wish. On the whole, as designers we like to stick to published specs as far as possible, unless they are known to give trouble. We are also human and sometimes get things wrong.
*Front porch, sync width, back porch. Together these add up to the H blanking interval.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
