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12 Zeta
Digital Broadcast Production Console
patHS and pOrtS
Paths and Ports
On an analogue desk, the channel inputs
are physical connections to the channel
module or card. They are fixed. Channel
1’s input is always channel 1’s input (even
though it may be possible to control
channel 1 from a different fader). Every
channel will probably have both a mic and
a line input, even though most will only use
one of them at any one time.
In a digital desk, there are two basic types
of input: mic/line and digital. However,
it is not necessary to provide both types
for every channel, as only one input will
be used at any one time. To provide both
types for each channel would increase the
cost, size and power consumption of the
desk unnecessarily.
Instead, a “pool” of each type is available,
plus an internal matrix to allow any of
them to be connected to any channel.
This provides more flexibility than is
possible with analogue designs. The
matrix can be thought of as an electronic
patch-bay with the advantage that any
connections made will be stored with the
console’s memories. A similar matrix and
“pool” is provided for the outputs which is
also stored with the memories.
Each channel can select from two inputs
(1 and 2), which can be any combination
of mic/line and digitaI. Both inputs can
be set up independently, using separate
input controls ( input gain, phase reverse,
phantom power, etc). The switching
between the two inputs takes place after
these controls.
The basic terminology is that channels,
groups and mains are referred to as
“paths” within the digital processing
system, and the inputs and outputs are
referred to as “ports” through which the
audio signals have to pass. Ports are
connected to paths via the Matrix.
All ports are optional, including those
for the monitoring. The system can be
supplied with any combination of mic/line
and digital ports. Calrec digital consoles
are available in a number of configurations
known as Audio Packs, which are a
suggested complement of ports. The
Audio Pack which most closely matches
the requirements of the installation can
be chosen, and the port quantities can be
fine tuned appropriately.
Port Labels
During installation, all the ports on the
system are labelled to match the studio
wiring. Some rules are imposed on this
labelling:
Inputs and outputs should be labelled
•
in pairs.
The label must be no more than six
•
characters (to fit on the console’s
displays).
The same label cannot be used more
•
than once (but an input can have the
same label as an output)
Inputs and outputs are labelled in pairs for
use with any type of signal; mono, stereo
or surround.
The system automatically adds a left
(L) and right (R) suffix to the label to
distinguish between the two halves of the
pair, or an LR suffix when the pair is used
together.
The pairs can be used either for two mono
signals, or a stereo signal, or parts of a
surround signal. This includes the digital
ports if the external circuit allows them to
be used for two mono signals.
Those inputs or outputs which are
dedicated externally to mono signals only
(telephone lines, mono reverbs, mono
distribution feeds, etc), can be specified as
being mono. In this case, the two halves
of the pair have separate labels and the L
& R suffixes are not applied. Inputs and
outputs labelled in this way cannot be
connected in pairs to stereo paths.
Port Lists
In addition to labelling, each port may
be allocated to one of a number of lists
using the Options - Port List screens.
This allows inputs and outputs which are
wired for similar purposes to be grouped
together for selection. Each list can
contain a mixture of normal inputs or
outputs (labelled in pairs) and inputs or
outputs dedicated to mono signals.
The lists can be sorted into the order
in which they appear on the selection
screens. The lists will appear in the same
order on the Input/Output panel and I/O
screens. It is possible to restrict the lists
which appear on the panel. This ensures
that only the relevant lists are immediately
available at the user’s fingertips. All lists
are always available on the screens.
Содержание Zeta
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Страница 17: ...Fader Area calrec com Putting Sound in the Picture ZETA...
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Страница 23: ...calrec com Putting Sound in the Picture ZETA Inputs And Outputs...
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Страница 29: ...calrec com Putting Sound in the Picture ZETA Console Functions...
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Страница 47: ...calrec com Putting Sound in the Picture ZETA Memory System...
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Страница 53: ...Metering System calrec com Putting Sound in the Picture ZETA...
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Страница 61: ...On Screen Patching calrec com Putting Sound in the Picture ZETA...
Страница 75: ...Port List Management calrec com Putting Sound in the Picture ZETA...
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Страница 81: ...Engineering Information calrec com Putting Sound in the Picture ZETA...
Страница 99: ...calrec com Putting Sound in the Picture ZETA Hydra Audio Networking...
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Страница 113: ...calrec com Putting Sound in the Picture ZETA Programming Utility...
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Страница 119: ...calrec com Putting Sound in the Picture ZETA Setup Application...
Страница 131: ...calrec com Putting Sound in the Picture ZETA Appendix A Offline Editor...
Страница 137: ...calrec com Putting Sound in the Picture ZETA calrec com Putting Sound in the Picture Appendix B Style 1 Faders...
Страница 139: ...calrec com Putting Sound in the Picture ZETA Appendix C Version Changes...
Страница 143: ...CALREC Putting Sound in the Picture 143 Notes...