Vela 2000-0422 Installation And User Manual - 0047 Video/audio Fade
Chapter 2 — Overview and Operation
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0047 Video/Audio Fade
0047 Video/Audio Fade
This command is supported on the Models 2000-0422-1 “Dash-1” only. The
command provides both audio and video fading capability. The video fade offers
alpha mixing (blending) from Video A to Video B, or fade from Video A to back-
ground then fade to Video B. The audio fade has been enhanced to be program-
mable up to a 5.4 second fade. Command 0047h can be used in place of
SET
AUDIO
CHANNEL
SELECTION
/
AUDIO
FADE
WITH
VIDEO
SWITCH
(003
CH
).
Video Fade Enable
This bit must be set to enable video fading operation. When cleared no video
switch or fade will occur.
Video Source
This selects the new video source:
NOTE: Video Switching/Fading requires both channels to be Genlocked to the same
genlock source. If genlock is not valid on both channels when switching video, the
video switch will be ignored and the following error will be returned:
Recovered Error, Genlock Sync Lost
Video Source
Video Selected
0b
MPEG Video Output
1b
Adjacent Channel Pair MPEG Output
SCSI Status
Check Condition
Sense Key
01h
Additional Sense Code and Qualifier
6100h
Table 2-13.Video/Audio Fade Command Format