Extron Electronics CD 900 - Manual (Page 5)

CD 900 Decoder • Introduction CD 900 Decoder • Introduction
Introduction, cont’d Introduction
About the CD 900
The Extron CD 900 is a 2-input, switching, high-resolution
quad-standard video decoder, with a three-line adaptive comb
filter. It converts NTSC, PAL, or SECAM standard interlaced S-
video or composite video signal to a non-interlaced output in
one of four formats:
• RGBHV
• RGBS
• RGsB
• Component video (Y, P B , P R )
This allows the connection of devices, such as a DVD player; a
VHS, S-VHS, or Super 8 tape deck; a camcorder; or a television
receiver, to a presentation device such as a data monitor or large
screen projector (figure 1).
RS-232 Control
VCR
OU TP UT
RS -23 2
CD 900
CRT Projector RGBHV
or
component
DVD Player Plasma
Figure 1 — Typical CD 900 application
Features
Quad-standard decoder — The CD 900 converts interlaced
S-video and composite video signals that are in one of the
four international analog video standards. These include
NTSC 3.58, NTSC 4.43, PAL and SECAM. Front panel
LEDs indicate which standard is active.
Three-line adaptive comb filter — The CD 900 uses a three-line
adaptive comb filter to separate the color carrier signal
and its harmonics from the rest of the video signal. Comb
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filtering yields an RGB or component video signal that is
free of noise, and produces a clean, clear picture.
Picture controls — Color, tint (hue), contrast (white level) and
horizontal shift (centering) features are adjusted using
knobs on the front panel or through RS-232 control
program.
Automatic memory — Picture control settings are automatically
saved for composite video (input 1) and for S-video
(input 2) in two separate memories. The settings are
recalled automatically when an input is selected.
RGB or component video outputs — The CD 900 decoder
outputs either RGB or component video. Select the
output using a rear panel DIP switch.
RGB video outputs — When selected for RGB video, the
decoder outputs signals with either separate
horizontal and vertical sync signals (RGBHV),
composite sync (RGBS), or sync on green (RGsB).
Select the sync format using a rear panel 3-position
switch.
Component video output — When selected for
component video, the decoder outputs Y, P B , P R
component video.
RS-232 control — An RS-232 port allows the CD 900 to be
controlled by a remote computer or other host. RS-232
control uses Extron’s Simple Instruction Set
™ (SIS ™ ).
Contact closure — The RS-232 connector may also be used by a
contact closure keypad to select inputs.
Simple Instruction Set — The Simple Instruction Set program
lets a host computer control the CD 900 with simple
commands.
Windows control software — Extron’s Windows-based control
software provides a graphic way to set up and control the
CD 900 with an on-screen control panel. It allows the
operator to remotely select inputs, make picture
adjustments, and store settings for future use.
Auto-switching — When set for auto-switch mode, the CD 900
automatically detects active incoming sync signals and
selects (switches to) that input. If both inputs are active,
the default is input #2 (S-video).
Sync polarity output selection — Two rear panel DIP switches
allow the polarity of horizontal and vertical sync signals
to be set separately. This allows for compatibility with
most display devices/projectors.
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