Switcher Basics
A switcher works by routing video signals through the
various boards and cards in the frame and feeding them
out of the assigned output BNC. The boards and cards
that the video signal passes through depends on the video
manipulation that is required, and which ME the source
is selected on.
Half ME (Mix/DSK)
Each switcher comes with a half (0.5) ME that has limited
functionality compared to a full ME. The half ME is
always the highest number ME in the switcher and
required no additional hardware.
Note: The Half ME option is not supported on the Evertz
®
IP
Output board or when the switcher is operating in a UHDTV1
video format.
The number of keys depends on how the Mix/DSK option
is set up. If Mix/DSK is set to Mix2K there are 2 keys
and if it is set to Mix4K there are 4 keys. Both of these
options lock specic output BNCs to the video signals
being output by the Mix/DSK option.
OUTPUT
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
Fully Configurable
Mix2K
PGM
CLN K2
CLN K1
PV
PV
PGM
Figure 4: Mix2K
OUTPUT
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
Fully Configurable
Mix4K
PGM
CLN K2
CLN K1
CLN K3
CLN K4
PV
PV
PGM
PGM
PGM
Figure 5: Mix4K
Refer to Mix/DSK in the Setup Manual for information
on turning the half ME on or off.
Note: References to ME refer to a full ME unless otherwise
stated.
Table 9: Half ME vs. Full ME Comparison
Full MEHalf ME
No (option)YesIncluded with Switcher
Yes (every odd
number ME)
NoRequires Additional
Hardware
YesYesProgram Assignable to
any Output BNC
YesNoProc Amps and Color
Correctors
84Keyers
Full MEHalf ME
Auto Select, Self
Key, Chroma
Key, Preset
Pattern Key, and
DVE Key
Auto Select and
Self Key
Key Types
YesNo2D DVE
Dissolve, Cut,
Wipe, and DVE
Dissolve and CutTransition Types
YesNoOutput can be Re-entered
to Another ME
YesNoDual Border Generators
YesNoAdvanced Pattern
Generators
YesNo*ME-Store
YesYesGlobal-Store Access
Note: * You can re-enter an ME-Store onto the Half ME, but
there is no dedicated ME-Store for the ME.
Video Sources
The switcher has access to two basic types of video
sources, external and internal. All video sources can be
assigned to video source buttons. By pressing a video
source button on a bus, the video source assigned to that
button is selected on that bus.
• External — External video sources come from
cameras, video servers, character generators, or other
external devices into the switcher.
• Internal — Internal video sources come from
internally generated video, such as Media-Stores,
matte color, and black.
Video Layering
Video layering depends on the ME re-entry and Keyers
that make up the output video. If we assume that each
ME has all keyers on-air and is re-entered into the ME
below, the layering will start with ME 1 Background and
progress to ME 4, Key 8.
ME1 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME2 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME3 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME4 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME5 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME6 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME7 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
ME8 Background
Key 1
Key 2
Key 3
Key 4
Key 5
Key 6
Key 7
Key 8
Figure 6: Video Layering
Acuity Operation Manual (v9.2) — Switcher Basics • 31
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