User`s guide

MOTU VIDEO SETUP
51
OUTPUT
The Output tab (Figure 6-22) provides settings for
the V4HD video outputs.
480i Broadcast Legalizer
Video with highly saturated colors may result in a
composite signal which is too “hot” to broadcast.
The 480i Broadcast Legalizer menu (Figure 6-22,
Figure 6-23) controls the V4HD’s SD Broadcast
Legalizer module, which desaturates any overly
saturated pixels to bring the composite signal
within the specified limit. For example, selecting
120 IRE guarantees the output will never exceed
120 IRE units. Only pixels that exceed the chosen
limit are affected and brought within range.
The Soft options provide a more gentle slope to the
filter, adjusting pixels above and below the chosen
limit to produce better results, but in the end still
capping all pixels to the chosen limit.
Composite video consists of both a chroma and a
luma component. The < 50 options further restrict
V4HD composite output by ensuring that the
chroma does not exceed 50 IRE units.
Figure 6-23: 480i Broadcast Legalizer menu.
576i Broadcast Legalizer
The 576i Broadcast Legalizer menu (Figure 6-22,
Figure 6-24) controls limiting the PAL composite
output in a similar manner as discussed above for
NTSC composite output, except that the levels for
PAL are expressed in millivolts (mV).
Figure 6-24: 576i Broadcast Legalizer menu.
SD Component Output Color Mode
Choose either the RGB or YPbPr color space
(Figure 6-22) for SD Component output.
HD Component Output Color Mode
Choose either the RGB or YPbPr color space
(Figure 6-22) for HD Component output.
HDMI Output Source
The V4HD always outputs both SD and HD video
signals, converting the currently chosen source as
necessary to produce both formats simultaneously.
The V4HD’s HDMI output jack can output either
the HD or SD signal. Use the HDMI Output Source
setting (Figure 6-22) to choose SD or HD for the
HDMI output. For example, if you choose SD, the
HDMI output destination in the signal path
diagram connects to the SD path as shown below
(Figure 6-25):
Figure 6-25: Sending SD video to the HDMI output.