Miranda NV5100MC Master Control, Справочное руководство

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42 Rev 2.10 • 17 Feb 11
4. MCPMs
Overview
The MCPM applies video effects and audio overs in the left-to-right sequence shown in Figure 4-1.
What is on the right is considered
downstream and what is on the left is considered upstream .
Downstream effects modify any upstream effects. For instance, a squeeze effect affects logo A,
because logo A is upstream of the squeeze function, but does not affect logo B, which is down-
stream. Downstream effects appear on top of upstream effects.
The MCPM adheres to the “audio follows video” paradigm: a main source in the MCPM is consid-
ered a video input with attached audio inputs. There are two ways the MCPM can obtain an audio
input:
• From a discrete audio connector: analog, AES, or Dolby E.
• From audio embedded in the video signal: AES or Dolby E, but not analog.
The MCPM can process Dolby-E encoded audio input if the MCPM has Dolby module(s) installed.
The MCPM provides 8 channels of audio processing. Each main source (on both program and pre-
set) can have 8 channels of audio. Each channel is independent and can be individually configured.
Figure 4 -2. Simple View of MCPM Audio
A third function (provided by some MCPMs) is to “host” one or more router output cards. These
MCPMs have one or two “wing” connectors into which you can plug SWB router cards. These
MCPMs contain one or more crosspoints that provide the outputs, 16 for each router output card.
(The router output cards are optional.)
A fourth function is to switch from normal program output to emergency program output during
periods of “emergency” or malfunction. MCPMs have an
emergency bypass control that performs
the switch.
All MCPMs provide audio metering outputs and audio monitoring outputs. Some MCPMs provide
analog audio outputs. All MCPMs have auxiliary functions (such as GPIs). The set of auxiliary
functions varies among the MCPM models.
Video Effects and Audio Overs
Applicable effects and audio overs include
keyer 1, logo A, squeezeback, keyer 2, keyer 3, logo B, over 1, over 2.
The MCPM applies these effects, layered cumulatively, to the selected main source (preset or pro-
gram) in the order listed here. Some MCPMs do not support all effects.
A keyer is a video overlay. A keyer can have two video sources: key (or mask) and fill. Some key-
ers have only one source — fill — and the mask is derived from the luminance of the fill. A keyer is
selectable at the control panel or by automation.
“Over”
Input
Adjust
A/B
Mixer
Program Audio
Output
Program Audio
Main
Input
Adjust
PGM/
Over
Mixer
“Over”
Input
Adjust
Preset Audio
Main
Input
Adjust
PST/
Over
Mixer
Off-Air Audio
Aux Audio
Monitor “A” Output
Monitor “B” Output
Meter Output
Discrete Analog, AES, or Dolby E
Disembedded AES or Dolby E
Discrete Analog, AES, or Dolby E
Disembedded AES or Dolby E