SYSTEM 4LQxi – LINE QUADRUPLER WITH BUILT-IN SWITCHER
Universal projector
control
Video or S-Video
line quadrupler
Quad Standard decoder
(NTSC 3.58, NTSC 4.43,
PAL & SECAM)
Three line adaptive
comb filter
Motion mode
compensation
RGsB, RGBS or RGBHV
outputs
RS-232 control
Sync polarity
programming
Triple Action Switching
™
300 MHz (-3 dB)
video bandwidth
Balanced/unbalanced
stereo audio inputs
Rack mountable
Extron’s System 4LQxi is a line quadr upler with a built-
in, four-input switcher. It provides universal projector control and is compatible with most digitally controlled data
grade projectors on the market today. The System 4LQxi is
also quad-standard compatible with NTSC 3.58, NTSC
4.43, PAL and SECAM for use with all international video
formats.
Line quadrupling is similar to line doubling except that
the number of horizontal scan lines are increased by a factor of four instead of two. Increasing the horizontal scan
rate by a factor of four (to 63 kHz), allows most CRT’s to
obtain a range of optimum efficiency, maximizing light
output with projector light output up to 60% brighter
than NTSC, PAL, or SECAM displays. In addition to
increased picture brightness, the image becomes smoother
and has a “film-like” quality.
Extron’s System 4LQxi has a high quality three-line adaptive comb filter which provides a crisp, stable image. In
addition, an internal TBC (Time Base Corrector) actually
cleans-up low quality videotape signals (common to VHS
tape players) for a more stable and sharper image. The
System 4LQxi also provides motion mode compensation
to remove the motion “jaggies” typically found in line
doubled and line quadrupled video.
In a large-screen venue application, the need for a line
quadrupler becomes increasingly apparent. When displaying conventional NTSC, PAL or SECAM video onto a
large screen, the spaces between scan lines are obvious and
make the picture look dark and diminished. The lack of
brightness is caused by displaying a low resolution on the
larger screen. With the horizontal scan rate increased by
four, the System 4LQxi fills in the gaps and the light output is therefore increased. The projector’s light output
capacity is now more fully utilized and thus, the overall
picture is brighter.
Universal Control
The System 4LQxi includes universal projector control
that will operate with most digitally controlled projectors
on the market today such as Ampro, Barco, Electrohome,
Hughes/JVC, Mitsubishi, NEC, Panasonic, Runco,
APPLICATIONS
SELECO, Sony and Toshiba, as well as the Mitsubishi XC
Series monitors. The System 4LQxi has four universal
inputs capable of accepting all computer RGB signals,
composite video and S-Video (S-VHS) standard signals
(NTSC, PAL or SECAM). Any video or 15.75 kHz RGB
Signal will be quadrupled.
The universal projector control function allows bi-directional “talk & listen” communication with most largescreen CRT-based projectors. When connected, the System
4LQxi will be recognized by the projector as the projector’s
own brand of switcher. The System 4LQxi can turn the
connected projector on or off, switch input memory blocks
for convergence, and set-up saved configurations by input
selection of the connected projector. It will then “talk” as
well as “listen” to the projector for continuous update
changes, feature changes or input selection changes made
by the user.
All this makes the System 4LQxi easy to learn, as it works
almost identically to the projector-brand switcher. The
advantage is one switcher for all projectors; there is no
need to learn all the different types of set-up and control
functions of each projector-brand switcher that is connected. And it works the same way with all brands– only the
internal communications board dip switch settings are different. In fact, the System 4LQxi may be controlled via the
projector manufacturer’s remote control.
Audio Switching & Processing
The System 4LQxi is also compatible with balanced and
unbalanced, two-channel stereo audio. The System 4LQxi
has the ability to switch between the four audio inputs. The
audio can either follow any video or RGB input signal or be
broken away from the video. With "breakaway" switching,
the audio signal may be separated from the video signal to
switch either the video only or the audio only. For example,
in an application where the user wants to show the video
only from input source “one” in conjunction with the audio
from input source “two”, the audio would be broken away
from source one and source two would be switched to the
final output. This provides increased flexibility for all types
of professional A/V applications.
APPLICATIONS (Cont.)
FEATURES (Cont.)
nn
Quad-standard decoder– The System 4LQxi is com-
patible with all standard video formats including
NTSC 3.58, NTSC 4.43, PAL and SECAM.
nn
Built-in line quadrupler– The System 4LQxi includes
a built-in line (scan) quadrupler which eliminates scan
lines on video images by quadrupling the number of
lines displayed. The input video (15.7 kHz) is converted to a 63 kHz RGB line quadrupled analog signal– especially useful for large screen displays.
nn
Three-line adaptive comb filter– A built-in three-line
adaptive comb filter helps provide crisp, stable output
from the System 4LQxi.
n Motion mode compensation– The System 4LQxi
line quadrupler has motion mode compensation to
eliminate the "jaggies” which are commonly associated
with enhanced video such as and line quadrupling.
n Universal inputs– The System 4LQxi has four uni-
versal inputs capable of accepting all computer RGB
signals, composite video and S-Video standard signals
(NTSC, PAL and SECAM). No optional modules are
needed for each input signal type. Looping capabilities
allow for up to 22 inputs.
nn
Balanced/unbalanced stereo audio inputs– Every
System 4LQxi is capable of switching up to four balanced or unbalanced stereo audio signals. Input
through professional captive screw terminals, audio
can be switched to follow any video or RGB input signal or “broken away” for maximum flexibility.
n Triple Action Switching™ (RGB delay switching)–
Exclusive to Extron, this unique delay switching feature in the System 4LQxi makes it possible to have
“seamless” switching for all projector models. This is
done by a triple-action switch. When an input is
selected (either by front panel or RS-232), the RGB
video is turned “off ” and sync is left on, then sync is
switched to the new source and finally, RGB video is
turned back “on.” This makes “glitch free” switching
possible with every projector on the market.
n LCD menu-driven picture and programming con-
trols– The System 4LQxi has an LCD menu that
makes set-up and programming of its many features
or functions simple. An alpha-numeric display allows
for any of the line quadrupler controls such as color,
hue, contrast and detail to be adjusted and stored in
memory for each input.
nn
Picture control memory– Each input has a separate
memory block for all picture controls of video or
RGB signals (including audio switching). These may
be set and stored by the System 4LQxi.
n Sync polarity programming–The output sync polarity of
the System 4LQxi may be programmed to be either positive or negative going for both horizontal and vertical
sync signals, ensuring that any projector will differentiate
the line quadrupler’s output from that of a 1280 x 1024
SUN or SGI work station.
nn
Universal projector control– Extron’s System 4LQxi is
fully compatible with all digitally controlled projectors.
Using the projector-brand remote control, the System
4LQxi can be made to switch inputs, power “on” or “off”
the projector, mute the audio or video signals and switch
the four inputs. This may also be accomplished by using
the System 4LQxi front panel controls or through a third
party control system via RS-232, in order that the switcher is able to “talk” to the projector.
nn
Universal compatibility–The System 4LQxi communi-
cates using the projector manufacturer's remote control
with all digitally controlled projectors on the market
today such as Ampro, Barco, Electrohome, Hughes/JVC,
Mitsubishi, NEC, Panasonic, Runco, SELECO, Sony
and Toshiba as well as the Mitsubishi XC Series monitors.
n RS-232 control– The System 4LQxi has built-in RS-232
control for third party control of any of its features or
functions. Extron has also developed a free Windows
®
based control program which allows the 4LQxi to be controlled by a remote PC.
n 300 MHz RGB video bandwidth–The 300 MHz
(-3 dB) bandwidth of the System 4LQxi allows for the
connection of video signals and super high resolution
computers such as SUN, Silicon Graphics, VESA,
M
AC/Quadra, SuperVGA, PowerMAC, Power PC, HP,
NCD, Chromatics and DEC workstations. This ensures
the highest resolution possible for any application.
n RGBS or RGBHV output– The System 4LQxi converts
all video inputs to an RGB output. This one output
(RGBS or RGBHV) makes the System 4LQxi easy to
connect all video signals to any projector brand through
one cable.
n 1U rack-mountable enclosure– The System 4LQxi is
housed in a metal 1U high, rack-mountable enclosure,
with an internal auto-switchable 100-240 volt autoswitchable power supply. Enclosure includes rack “ears”
and hardware.
n Triple-split screen mode– Extron’s System 4LQxi has a
triple-split screen mode that displays TSC/PAL/SECAM,
line doubled video and line quadrupled video simultaneously on the same display. This provides the opportunity
of showing the advantages of image purity and brightness
when using a line quadrupler.
FEATURES
EXTRON ELECTRONICS/RGB SYSTEMS, INC.
1230 South Lewis Street, Anaheim, CA 92805
800.633.9876 714.491.1500 FAX 714.491.1517
U.S.A.
EXTRON ELECTRONICS, EUROPE
Beeldschermweg 6C, 3821 AH Amersfoort
+31.33.453.4040 FAX +31.33.453.4050
The Netherlands
EXTRON ELECTRONICS, ASIA
41B Kreta Ayer Road, Singapore 089003
+65.226.0015 FAX +65.226.0019
Singapore
EXTRON ELECTRONIC INFORMATION
EXTRONWEB™: www.extron.com
EXTRONFAX™: 714.491.0192
24-hour access—worldwide!
89-03
68-373-01
REV. A
APPLICATION DIAGRAM
Control
System
Large Screen
Projector
VCR/VTR with Audio
Laserdisc Player
with s-VHS Outputs
and Sterio Audio
SGI/SUN
Workstation
PC or Workstation
with Audio
Stereo Audio
INPUT 1 INPUT 2
AUDIO
AUDIO
INPUT 3
AUDIO
INPUT 4
AUDIO
OUTPUT
AUDIO
RGB
Interface
RGB
Interface
SPECIFICATIONS SPECIFICATIONS (Cont.)
Inputs
RGB Video
Bandwidth.................................. 300 MHz (-3 dB)
Return loss at 10 MHz .............. 25 dB
Crosstalk at 10 MHz.................. -35 dB
Isolation at 10 MHz .................. -55 dB
Audio
Frequency response .................... 20 Hz to 20 kHz
Signal to noise ratio.................... 85 dB minimum
Total harmonic distortion .......... -78 dB
Peak to peak voltage.................... 8 volt p-p
Audio input
Type............................................ 4 inputs, two channel,
balanced
Connectors ................................ Captive screw connector,
6 conductor
Impedance.................................. >10 k ohm, AC coupled
Maximum level
(balanced or unbalanced)............ 11.2 dBu
CMRR........................................ >60 dB typical
Audio throughput
Routing ...................................... 1 of 4 two channel routing
Response .................................... ±.05 dB 20 Hz to 20 kHz
Gain adjustment ........................ -95.5 dB to +31.5 dB, both
left and right channels
per input
THD + Noise ............................ 0.002% worst case,
+10 dBu input, +10 dBu output,
balanced input and output
S/N ............................................ >95 dBu, 0 dBu reference
Adjacent input crosstalk.............. Better than 85 dB from
20 Hz to 20 kHz
Stereo channel separation............ 60 dB from 20 Hz to 20 kHz
Outputs
RGB and sync
Frequency .................................. 63 kHz horizontal,
60 Hz vertical
Resolution .................................. 1280 x 1024
Connectors ................................ Female BNC’s
Impedance.................................. 75 ohms video, 510 sync
Audio output
Type............................................ 1 output, two channel
balanced
Connectors ................................ Captive screw connector,
6 conductor
Impedance.................................. 50 ohms
capable of driving 600 ohms
Audio gain
Output taken single ended.......... 0 dB± channel throughput gain
Output taken differentially ........ ±6 dB channel throughput gain
Gain error .................................. ±0.2 dB channel to channel
Muting........................................ >95 dB
Drive .......................................... +11.2 dBu into 600 ohms
Switching speed.............................. 5 mS (max)
Power supply.................................. 100 - 240 VAC 50/60 Hz
(auto-switchable)
Power consumption........................ 30 watts
Operating temperature .................. 0˚ - 50˚ C
Storage temperature........................ -20˚ to +70˚ C
MTBF (demonstrated) .................. 30,000 hours
Approved ........................................ UL & CE Listed
Dimensions.................................... 1.74"H x 19"W x 16.2"D
4.4 H x 48 W x 41 D cm
Shipping weight .......................... 21 lbs. (9.5 kg)
Warranty .................................... Two years, parts & labor
Part number................................ 60-221-01
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