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BBG-1040-ACO Functional Description
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BBG-1040-ACO PRODUCT MANUAL
BBG1040ACO-OM (V1.4)
Figure 1-2 Auto-Changeover Function and Signal Flow
Timecode Processor
(See Figure 1-3.) This function provides for extraction of timecode data from
input video source, and in turn allow individual timecode strings to be
embedded and/or burned into the output video. The function can monitor any
of the video inputs for supported timecode formats such as ATC_LTC or
ATC_VITC for HD, and ATC_VITC or VITC waveform (with selectable odd/
even field line number control) for SD SDI inputs. Waveform VITC timecode
can also be extracted from a reference input and used as the output timecode
value. If the preferred format is detected, the preferred format is used by the
device; if the preferred format is not detected, the device uses other formats
(where available) as desired. An internally-generated free-run timecode can
be also be embedded on output video if desired.
The function also provides conversion between various timecode formats and
provides independent insertion and line number controls for each SDI
timecode output format.
When licensed with option
+LTC
, this function also can
receive and translate audio LTC timecode (from Emb Ch 1-16) for insertion
as SMPTE 12M ATC timecode formats onto the output video as described
above.
A
B
PROC
IN
PROC
OUT
SDI IN A selected; card and SDI IN A OK
Select A active
asserted by
control logic
Select Processed
active asserted by
control logic
A
B
PROC
IN
PROC
OUT
SDI A selected; card loses power
Mechanical HOLD A
asserted by relay
latching
Mechanical GO TO
bypass asserted
by relay latching
A
B
PROC
IN
PROC
OUT
SDI IN A loss; failover to SDI IN B
Select B active asserted
by control logic
Select Processed
active asserted by
control logic
PROC
IN
PROC
OUT
SDI IN B selected; card and SDI IN B OK
Select Processed
active asserted by
control logic
A
B
PROC
IN
PROC
OUT
SDI IN B selected; card loses power
Mechanical HOLD B
asserted by relay
latching
Mechanical GO TO
bypass asserted by
relay latching
9940ACOFO LB90
Select B active
asserted by
control logic