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Effects Loop Processing
The Engineering menu Input submenu Effects Loop Inputs softkey has
two pushknobs that select DVE video and key inputs. Note that there
are independent settings for DVE 1 and DVE 2, to support two pairs of
Aux outputs as described above. Entering the input numbers for the
DVE(s) here tells the 8150 that, when it is performing an Effects Loop,
the re-entry video and key from the DVE is returning at the selected
inputs. The 8150 then compensates for these delayed sources by delaying
its automatic input timing window by the same amount for just those
two inputs. It then routes these two inputs back to the same points in the
M/E Processor or PGM/PST/DSK Processor from which the original
signals left.
If you are using two DVEs, you may also be using a video combiner to
composite the outputs of the two DVEs together before re-entry to the
8150. If this is so, the two DVEs must be locked to the same reference.
However, if DVE 1 is locked to the 8150's main Aux Ref output, and DVE
2 is locked to the Aux Ref 2 output, they may not be cotimed to each
other. This is why the Combiner pushknob appears in this submenu.
Combiner Off is the default mode; it lets the timing of Aux 1 and 2
outputs be different from that of the Aux 3 and 4 outputs. Combiner On
forces all Aux outputs to match the delay of those Aux outputs, and
therefore the Aux Ref outputs, used in the current Effects Loop. Note
also that if you are using a video combiner with two DVEs, one pair of
OTHER SOURCES
5-80
Engineering Setup
Generated in the DVE
INPUTS
KEY 2 FILL
KEY 2 CUT
DVE
VIDEO RETURN
DVE
KEY RETURN
KEY 1 FILL
KEY 1 CUT
BGND A
BGND
BGND B
MIXER
M/E WIPE
DSK FILL
DSK CUT
DVE
VIDEO RETURN
DVE
KEY RETURN
PRESET
BGND
MIXER
PROGRAM
PGM/PST WIPE
Figure 5-24 M/E Background Effects Loop
DVE
VIDEO
IN
VIDEO
OUT
KEY
IN
KEY
OUT
REF
IN
8150 SWITCHER
M/E PROCESSOR
KEYER
2
BGND
KEYER
1
BGND
PGM/PST/DSK PROCESSOR
DOWNSTREAM
KEYER
BGND
8150 Technical Guide
VTR
MONITOR
IN
IN
AUX
OUTPUTS
REF
M/E DVE VID
M/E DVE KEY
M/E PGM
M/E PVW
DSK DVE VID
DSK DVE KEY
DSK PGM
DSK PVW
9100-0212-04 - May 2000
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