Crescendo-Systems TC2000 Gebruikershandleiding - Pagina 3

Blader online of download pdf Gebruikershandleiding voor {categorie_naam} Crescendo-Systems TC2000. Crescendo-Systems TC2000 4 pagina's. Transcoder

6. Connect the power supply to the transcoder. Use only the supplied unit or an

exact equivalent.

Technical details and tips

The TC2000 implements the following two color conversions.

For 480p:

= 0.2990R + 0.5870G + 0.1140B

Pb = 0.5643 (B–Y) = –0.1687R – 0.3312G + 0.5B

Pr = 0.7133 (R–Y) =

For 540p/720p/1080i:

= 0.2126R + 0.7152G + 0.0722B

Pb = 0.5389 (B-Y) = –0.1146R – 0.3854G + 0.5B

Pr = 0.6350 (R-Y) =

Because of the transparent timing, the TC2000 relies on the source device or a program

like PowerStrip™ to set the correct horizontal and vertical sync width. A TV expects a

H-sync width of around 2μs for 480p and around 1μs for 540p/720p/1080i. If the H-sync

width is too long, the picture will look washed out with a white haze on it. A computer

monitor on the loop-through will not show this effect because this kind of monitor is

highly insensitive to the H-sync width.

If the picture looks washed out, try reducing the width of the H-sync, while keeping the

scan frequencies locked, until the picture looks good and a further reduction makes no

difference anymore. Do not reduce the H-sync width too much, 0.6μs is normally the

minimum width before a TV looses lock.

0.5R

– 0.4187G – 0.0813B

0.5R

– 0.4542G – 0.0458B

TC2000 users manual v1.1