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Definitions
The following terms are used throughout this guide:
Tie — An input-to-output connection
Set of ties — An input tied to two or more outputs. An output can never be tied to more
than one input
Configuration — One or more ties or one or more sets of ties
Current configuration — The configuration that is currently active in the switcher (also
called configuration 0)
Plane — A board or set of boards that will be switched together. Plane numbers are set by a
rotary switch on each board.
Global memory preset — An I/O configuration that has been stored (all planes). Up to 32
global memory presets can be stored. Preset locations are assigned to the input buttons
and output buttons and can be selected from the front panel, serial port, or Ethernet control
for either saving or retrieving. When a preset is recalled from memory, it becomes the
current configuration.
Plane memory preset — A plane configuration that has been stored. Up to 10 plane
presets per switching plane can be saved and recalled without affecting the other I/O plane
connections.
EDID — Extended Display Identification Data. A communications protocol or instruction set
developed by VESA (Video Electronics Standards Association) for the identification of display
devices to computers using the DDC (Display Data Channel) transmission standard
HDCP — High-bandwidth Digital Content Protection. An encryption method developed
by Intel that protects copyrighted digital entertainment material that uses the Digital Video
Interface (DVI) and High Definition Multimedia Interface (HDMI)
DVI — Digital Visual Interface. The digital video connectivity standard developed by DDWG
(Digital Display Work Group). This connection standard offers two different connectors: one
with 24 pins that handles digital video signals only, and one with 29 pins that handles both
digital and analog video. DVI standard uses TDMS (Transition Minimized Differential Signal)
from Silicon Image and DDC (Display Data Channel) from VESA (Video Electronics Standards
Association). DVI-D supports digital signal transfer only, and DVI-I supports both digital and
analog signal transfer.
HDMI — High Definition Multimedia Interface. A specification developed by the HDMI
Working Group that combines video, multi-channel audio, and control signals into a single
digital interface for use with DVD players, digital television, and other audiovisual devices
SDI — Serial Digital Interface. This standard is based on a 270 Mbps transfer rate. It is a
10-bit, scrambled, polarity independent interface with common scrambling for both
component ITU-R 601 and composite digital video and four channels of embedded digital
audio.
HD-SDI — High-definition version of SDI specified in SMPTE-292M. This standard transmits
audio and video over a single coaxial cable with a data rate of 1.485 Gbit/second.
USB — Universal Serial Bus. Developed by PC and telecom industry leaders, USB was
designed for easy plug-and-play expansion outside the device, requiring no additional circuit
cards. USB devices can be attached or detached without removing computer power.
SMX System MultiMatrix Switcher • Introduction
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