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Rev 2.10 • 17 Feb 11
5. MCEs
Structure
In addition, the MCE accepts up to 16 “auxiliary” inputs and 16 “off air” inputs. These are discrete
inputs only. Although these names perhaps suggest a use for the inputs, the aux and off-air inputs
are simply two extra sets of inputs. However, the aux and off-air inputs are not processed or mixed
with program audio, but feed directly to the audio meter and monitor outputs. The MCE offers
some choices regarding what appears on the meter and monitor outputs.
The result of channel processing is 16 channels of program audio and 16 channels of preset audio.
These channels are embedded in the program output and preset output that appear at the MCE-
CORE backplane.
The same is true for preview audio. Preview audio is, however, separated from program and preset
audio processing. Preview audio appears, embedded, in the Preview A output of the MCE-PVW
backplane. (The Preview B output is a copy of Preview A.)
Channel Processing
The channel processing function is the same for all 16 internal audio channels: Program main and
program over are mixed. Preset main and preset over are mixed. The two results are then mixed
according to the current transition. If a transition is not in progress, the mix is 0% preset and 100%
program. Otherwise, the mix varies according to the progress of the transition.
Figure 5 -4. Audio Channel P rocessing (One of 16 Channels)
Preview main and preview over are mixed separately.
In any case, program audio output, preset audio output, and preview audio output are sent to the
audio meter and monitor section where they can be selected (or not) for output.
Gain controls
—
independent for all 16 channels
—
range from +12dB to –108dB. Gain can be
specified during configuration and changed during operation. Whether to invert a signal is a simple
configuration option.
S
Signals are inverted by multiplying the digital values by –1.
Amplifier
Program Main
Program Over
Inverter
Audio
Over
Mixer
Amplifier
Inverter
Amplifier
Preset Main
Preset Over
Inverter
Audio
Over
Mixer
Amplifier
Inverter
Prog/
Preset
Mixer
Program Out
Preset Out
to Meters
and Monitors
Amplifier
Inverter
Audio
Over
Mixer
Amplifier
Inverter
Preview Main
Preview Over
Preview Out
Содержание NV5100MC Master Control
Страница 14: ...xiv Rev 2 10 17 Feb 11 Table of Contents ...
Страница 54: ...40 Rev 2 10 17 Feb 11 3 Frames Other Modules ...
Страница 92: ...78 Rev 2 10 17 Feb 11 4 MCPMs Other General Features ...
Страница 112: ...98 Rev 2 10 17 Feb 11 5 MCEs Summary ...
Страница 158: ...144 Rev 2 10 17 Feb 11 6 Control Panels Aux Preview GUI ...
Страница 166: ...152 Rev 2 10 17 Feb 11 7 Other MC Products Device Controller ...
Страница 224: ...210 Rev 2 10 17 Feb 11 C Misc Information NorthAmerican andInternational PowerCords ...
Страница 240: ...226 Rev 2 10 17 Feb 11 Index ...