Crystal Vision
Control
Descriptions
Delay
When short delay is selected the minimum delay
available is 16 lines. This limit is imposed to
prevent possible frame tearing at delays less than
this minimum. If the delay is set to less than 16
lines one frame of delay will be automatically
added to the output, so for delays of less than 16
lines the actual delay will be one frame plus the
adjustable delay. Note that any negative delay
dialled will be one frame less the negative delay.
Selecting Frame Delay will add a fixed one frame
delay between input and output. The variable
delay slider controls will now allow an adjustment
of +/- 1 frame in lines and pixels. Note that the
maximum delay in lines for any output format is one
frame. Any number of lines dialled greater than one
frame will be ignored and return the maximum delay
of one frame. Similarly, the maximum delay in pixels
cannot exceed one output line.
Frame Delayed
The Frame Delayed LED will illuminate whenever the one frame delay
is added.
Pixel/Line
The video delay controls are made up of two mode controls and two
variable sliders /- 1 line in pixels and +/- 1 frame in lines.
Fixed Aspect Ratio
Set up output aspect ratio correction.
SD Analog
Line Length
Set the SD output line length to be equal to analogue video.
ARC
Choose Aspect Ratio Correction for the output
picture. There are four fixed aspect ratios
which are: Anamorphic, 16:9 Letterbox, 14:9
Letterbox and centre cut.
Selecting Auto 16:9 for all AFD input codes will
give an Anamorphic aspect ratio conversion
and for a 625-line output WSS will be set to
16:9 full frame.
When set to Auto 4:3 the output aspect ratio
and WSS data will depend on the input AFD.
Undefined/reserved and full frame codes will
produce a Letterbox aspect ratio with the
output WSS set to 16:9 Letterbox. Pillarbox 4:3,
Wallbox Q-Down User Manual R1.0
34
08 August 2016