Grass Valley 8985FS v.1.3.2 - Manual (Page 54)

54 8985FSP/FS — Instruction Manual
Configuration
Video Proc Web Page
Use
this
link
On the 8985FSP module, the Video Proc web page ( Figure 26 on page 55 )
provides overall video processing and Y/C clipping controls for the HD or
SD signal.
Video Processing Controls
The Video Proc controls must be enabled by checking the VPA Enable
checkbox.
The following controls are provided for video processing:
VPA (Video Proc Amp)
Use the controls below to adjust the video proc amp:
• VPA Enable checkbox – to enable the video proc amp controls, select the
VPA Enable checkbox.
• Y/Cb/Cr Gain – set the gain for the Y, Cb, or Cr channel from 0 to 200% with
the corresponding control or adjust all gains together by using the Total
Gain control.
• Y/Cb/Cr Offset – set the offset ± 100% for the Y, Cb, and Cr channels with
the corresponding control.
• Color Saturation – adjust the percentage of color saturation relative to
100%.
Y/C Clip Controls
Use the following clipping controls to adjust levels on the output signal:
• Clip Enable checkbox – to enable the clip controls, select the Clip Enable
checkbox.
• Use the Y White Clip (%) control to set the clipping level for the top end
(white) of the luminance signal (positive excursions) from 50 to 109%.
• Use the Y Black Clip (%) control to set the clipping level for the bottom end
(black) of the luminance signal (negative spikes and Super Black) from
-7 to +50%.
• Use the C White Clip (%) control to set the clipping level for the top end
(white) of the chrominance channel (clips white and reduces overall
saturation level to fit within clip) from 50 to 109%.