Datasheet

141
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CONFERENCE / Built-in frame
LAN – Local Area Network
Computer network that links various computers and
peripheral devices via cables or wireless over a restricted
physical area.
Loudspeaker connections
Stereo (red + white) screw terminals for audio signals.
LC
This connector is similar to the SC but smaller.
Media control
Control of video, power, lighting and audio systems
in a building. Sound, light and video are controlled by
appropriate commands. Media control allows all the devices
to be used in a presentation to be linked and controlled in
the desired time sequence.
Mini audio jack
A 3.5 mm jack socket for audio signals (e.g. from laptop or
PC to loudspeakers).
Mini USB
A compact plug or socket version of the USB standard.
This version was developed for devices with restricted
space such as mobile telephones and digital cameras.
MTRJ
An optical connector that accepts two fibres; the junctions
are embedded in a common plastic block in the shape of an
RJ45 connector. This design also prevents any confusion
of the outward and return line and is easy to insert and to
remove. This connector is suitable for single-mode and
multi-mode fibres.
MUTE
Switching of audio devices to silence.
OWG – Optical waveguides
Cables made up of, or including, optical fibre conductors
with connectors for transmitting optical signals in the visible,
ultraviolet or infrared ranges. Fibre-optic cables form a
reasonably pliable medium for transmitting optical signals or
even higher-powered optical radiation.
Overvoltage protection with filter
Overvoltage protection – conforms to DIN VDE 0620-1:-
2002-01, EN 61643-11:08-2007, type 3, discharge current
6.5 kA, response time < 25 nS. Suitable for 16A (miniature
fuse on request) with varistors, temperature fuse, gas
discharge arrester, visual LED function and failure indicator
(acoustic signalling also available on request). Mains and
frequency filters – conforming to VDE 0565-3:05-2006 for
voltage peaks up to 30 MHz, damping diagram on data
sheet.
PAL – Phase Alternating Line
The conventional television standard in Europe for analogue
TV signals with a resolution of 720 x 576 pixels.
Potential-free contact
Used for communicating a status between electrical
devices. Contact is normally established via a relay or
optical coupler. This ensures that the electric circuits of
the respective devices remain galvanically isolated from
one another. This solution is the simplest and safest
method for e.g. transmitting digital data electrically.
PowerCON
A type of 3-pole power connector with coding and
interlocking, most frequently used for stage equipment.
The interlock mechanism protects against the plug being
accidentally pulled out of its socket.
PS/2 interface (PS/2 connection, PS/2 port, originally
'auxiliary port'). Commonly used 6-pin serial interface
for input devices (e.g. mouse and keyboard) on personal
computers.
Pushbutton
Illuminated blue, various types, e.g. in desk control panels
for controlling equipment. Rocker buttons are used for up/
down control of external devices, e.g. screen, blinds etc.
Pushbutton: automatic switchoff
Power strips that feature an automatic switchoff device are
used to automatically switch off the power to the connected
equipment. Pressing the button subsequently restores
power to the connected equipment.
Pushbutton: stainless steel
For connection by the user to control equipment and media.
RCA
See Cinch (RCA)
RGB signal
In a RGB signal the colours red, green and blue are each
transmitted and/or stored in their own channel. RGB signals
are used for video transmission e.g. on computers with a
VGA interface or in video systems with SCART connections.
RJ (registered jack) connectors
These are standardised connectors for telecommunications
cables. The standards describe the physical form of
plugs and sockets and their contact configurations,
and are designated by the letters RJ and a number
(e.g. RJ-45), with or without the hyphen. Examples:
RJ12 6P6C / RJ45 8P8C
RJ12
see RJ (registered jack) connectors
Router
A device that forwards data packets though various
networks. The router serves to calculate the connections
between, for example, two local networks (LANs) and
automatically establishes the optimum path for the data
packets.
RS-232
Serial interface standard with 25-pole or 9-pole connector
for serial data transmission. Also known as V.24. Both one-
to-one pinouts and crossover configurations are commonly
used.
SC
An optical connector used in new LAN installations.
The right-angled design can be used for multi-mode and
single-mode (monomode) glass fibres. Average insertion
loss is about 0.2 dB, maximum approx. 0.4 dB. The
advantage of SC over the ST connector is the push-pull
design– i.e. the plug locks in automatically when inserted
and is released when pulled out. This allows the use of
duplex connectors (two connectors linked by a duplex
clip) and duplex connections can be inserted or removed
simultaneously.
Speakon
A connector designed for loudspeakers, offering a robust
construction, a 20 A contact current capacity and secure
interlocking. Speakon connectors are available in two-pole,
four-pole and eight-pole versions; the 2-pole and 4-pole
types are mutually compatible. The eight-pole version has
a larger physical size. The number of contacts available
in a single connector makes it possible to connect multi-
channel passive systems, satellite subwoofer systems or
multi-channel monitor loudspeaker constellations via a
single cable.
ST
This connector (also known as a BFOC connector) is
common in LANs and is suitable for single-mode and
multi-mode optical fibre cables. Average insertion loss
is about 0.3 dB, maximum approx. 0.5 dB.
S-Video / Super Video system
S-Video, also known as the Y/C process, designates
a special analogue video signal process in which the
'luminance' (brightness) information is transmitted and
processed separately from the 'chrominance' (colour
information). An example application of S-Video is in
VHS video recorders.
S-VHS – Super Video Home System
An improved, downward-compatible VHS standard for
home video-band recording that offers better picture
resolution and greater colour accuracy. Horizontal image
resolution is some 2/3 better than in VHS. S-VHS is a
standard, not a connector. The S-VHS standard signal
may however be transmitted via the S-Video (Hosiden)
connector.
Switch
A network component for linking multiple computers or
network segments within a local area network (LAN).
Switches analyse network traffic and make logical
decisions.
TOSLINK
A standardised optical waveguide connection system for
optical signals in the range up to about 20 Mbps. Used to
carry digital audio signals between audio devices.
TrueHD
Audio standard for high-resolution media such as Blu-ray
andHDDVD.TrueHDallows100%loss-freecompressionof
audio data. The codec allows a data rate of up to 18 Mbps.
USB – Universal Serial Bus
USB is used to connect a variety of devices together by
cable. USB is a bit-serial bus on which the individual bits
of a data packet are transmitted one after another. Devices
with USB can be connected to one another while operating,
since the newly connected devices are automatically
detected. USB is used to connect, for example, printers,
digital cameras, MP3 players and hard disks to a computer.
VBS
See Cinch (RCA)
VGA / audio switch
Switches between multiple input sources (e.g. several
laptops) as required and forwards the signal to output
media devices (e.g. projector, monitor, loudspeaker).
VGA – Video Graphics Array
refers to a computer graphics standard (EISA, 1987) that
defines specific combinations of image resolution and
number of colours (colour bit depth) as well as repeat
frequency. VGA allows a resolution of 640 x 480 pixels,
while VGA cables allow a higher resolution. The 15-pole
VGA socket is used to transmit image signals (e.g. from
laptop or PC monitor to a projector, VGA switch box etc.)
XLR
Industry standard for electrical plug connections. Used in
professional public-address and recording studio systems.
3-pole XLR connectors are used for analogue microphone
and loudspeaker signals and for digital AES/EBU signals.
5-pole connectors are used for DMX digital lighting control
data.
GLOSSARY / Facility catalogue 2013/14