7700 MultiFrame Manual
7736CEM Composite Encoder with Monitoring
Page - 78
Revision 1.5
*Grey background indicates un-implemented or un-tested features
8.11. VIDEO CONTROLS
Figure 8-13: Video Controls Tab
8.11.1. NTSC Setup Pedestal
Composite NTSC analog video may have a 7.5 IRE pedestal while 4:2:2 SDI video does not. This control,
when set to
On
, will add the pedestal and re-scale the video accordingly. The setup pedestal should not
be present on composite video when operating in Japan.
8.11.2. Line 21 Setup Pedestal
Closed captioning has been defined to NOT have a 7.5 IRE pedestal, but it is placed on the first active
line of video where there may be a pedestal. The upstream closed captioning encoder should not have
generated a setup pedestal. When encoding composite video with properly keyed captioning, a pedestal
must not be generated.
This parameter, when set to
Off
, will not create the 7.5 IRE pedestal on line 21. This is the default state
for properly generated captioning.
When set to
On
, the 7.5 IRE pedestal will be generated on line 21. Use this state when there are no input
captions.
Note: The
On
condition will only take effect if the
NTSC Setup Pedestal
is set to
On
.
