Grass Valley Concerto Routing Matrix v.1.8.1 User Manual
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Concerto — Installation and Service Manual
Glossary
Chop
A variation of a Take command that alter-
nately connects each of two different Sources
to a single Destination (flip-flopping) at a
designated switching rate (the chop rate).
Coaxial Cable (coax)
A cable which has a metallic noise shield sur-
rounding a signal-carrying conductor. In
video, the cable impedance is typically 75
ohms. Ethernet coax is typically 50Ω imped-
ance.
Cold Start
A boot from power off.
Component Video
The un-encoded output of a camera, video-
tape recorder, etc., consisting of 3 primary
color signals: Red, Green, and Blue (RGB)
that together convey all necessary picture in-
formation. In some component video for-
mats, these three components have been
translated into a luminance signal and two
color difference signals, e.g. Y, R-Y, B-Y.
Composite Video
An encoded video signal, such as NTSC or
PAL video, that includes horizontal and ver-
tical synchronizing information.
Control Device
Panel, computer, or other device that con-
trols Routing switcher crosspoint selections.
Controllers
Part of the control system, Controllers are cir-
cuit modules which interface between the
control system and signal processing mod-
ules.
CPO
Clear Protected Output.
Crosspoint (XPT)
An electronic switch that allows a signal to
pass from an input to an output when the
switch is closed.
DA
Distribution Amplifier used to expand out-
puts.
Default
The setup condition existing when a device
is first powered-up or after a system restart.
Destination (DEST or DST)
The point to which Source signals are rout-
ed. A Destination may include one or more
outputs, across multiple Levels, with any
connector number offset (user-defined in
system configuration).
DGND
Digital Ground.
DST
See
.
A conversational slave to a host computer.
EC I/F
External Control Interface.
EMI
Electromagnetic interference.
ERR
Error. This is commonly found on the mod-
ules to identify the red error LED.
Ethernet
A local area network (LAN) technology ca-
pable of transmitting information between
computers at speeds of 10 and 100 Mbps.
Exclusion
User-determined Sources excluded from
routing to a particular Destination.