Crystal Vision
Control Descriptions
Bypass
Enabling the bypass control will set the Q-Down 3G range into
bypass mode whenever the input and the selected output format
are the same. In bypass mode the analogue output selection
remains active along with the analogue RGB and YUV proc-amps
and the delay controls. The digital proc-amps will be disabled and
the SDI delay through the Q-Down 3G range will be set to its
minimum processing delay. (SD approximately 2uS delay and HD
less than 1uS delay.)
Note that the Q-Down 3G range does not support
a 3G output so bypass with a 3G input is not possible
.
Bypassed
Output
On whenever the Q-Down 3G range is in ‘bypass’ mode.
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.
Q-Down-AG 3G/ATG 3G User Manual R2.1
33
11 July 2019
