Barco FSN Series User Manual page 268

7. Operations
Understanding Switcher Layers
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To help you understand FSN Series architecture from a production perspective, and to
assist with the creation of switcher "looks," the diagram below illustrates how the various
switcher banks are layered on the FSN-150.
Input Video
Input Video
Figure 7-1. Switcher layers, FSN-150
The following rules apply:
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•
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M/E 1 BG and PST buses
Key 1
Key 2
PGM PGM and PST buses
DSK
FTB
Input video from the FSN-1400 flows into the M/E and PGM banks across the
crosspoint matrix.
M/E 1 consists of Background (BG) and Preset (PST) buses, and two layers of
keys (Key 1 and Key 2). The bank provides Program, Preview and Clean Feed
outputs, plus a "re-entry" output that flows into the PGM bank. Please note:
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The BG and PST buses comprise the background layer — the farthest
layer upstream, and visually, the layer that's behind Key 1 and Key 2
(and all other switcher layers).
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Key 1 is downstream of the BG and PST layer, but upstream of Key 2.
Keys created on Key 1 are visually "over" the BG and PST layer, but
"under" Key 2.
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Key 2 is the farthest layer downstream on M/E 1. Keys created on Key 2
are visually "over" BG, PST and Key 1.
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Even if you swap key settings by pressing the {Swap Key Settings}
button, the priority of the layers does not change.
The PGM bank consist of Program (PGM) and Preset (PST) buses, and a single
layer of keying (DSK). The bank provides Program, Preview and Clean Feed
outputs. Please note:
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The entire PGM bank is downstream of M/E 1 — visually on top of all
effects created on M/E 1.
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The PGM and PST buses comprise the bank's background layer — the
farthest layer upstream in the bank, and visually, the layer that's behind
the DSK.
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The DSK is downstream of the PGM and PST layer, but upstream of the
FTB (fade to black) function. Keys created on the DSK are visually
"over" PGM and PST.
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FTB is the farthest function downstream in the switcher. This function
enables you to fade the entire switcher (including DSK) to black
M/E Clean 1 (Pre Key 1)
M/E Clean 2 (Pre Key 2)
M/E Out
Re-entry
PGM Clean 1 (Pre DSK)
PGM Clean 2 (Post FTB)
Program Out (Post FTB)
FSN Series • User's Guide