Extron Electronics RGB 202xi VTG User Guide - Manual (Page 11)

RGB 202 Rxxxxxiiiii, RGB 202 Rxxxxxiiiii VTG • Installation and Operation RGB 202 Rxxxxxiiiii, RGB 202 Rxxxxxiiiii VTG • Installation and Operation
Installation and Operation, cont’d
2 — SOG (sync on green)
On — The interface outputs sync on green.
Off — The interface outputs both separate horizontal and
vertical sync (on the H and V connectors) and
composite sync (on the S connector) for RGBHV or
RGBS, respectively.
3 — Serr (serration pulse) — Many LCD and DLP projectors
and plasma displays, must have serration pulses removed
from the sync signal in order to be displayed properly.
Flagging or bending at the top of the video image is a sign
that the serration pulses should be removed.
On — The interface outputs serration pulses in the vertical
sync interval.
Off — The interface does not output serration pulses.
4 — Neg Sync — This switch controls sync polarity.
On — Both the horizontal and the vertical sync signals
are forced to negative polarity on output.
Off — Output sync polarity follows (is the same as) input
polarity.
5 — V Sync Width (vertical sync pulse width) — For some
digital display devices, if no picture appears, the picture
cuts in and out, or it is scrambled, try adjusting the output
vertical sync pulse width or switching from ADSP to DDSP.
On — The vertical sync pulse is narrow.
Off — The vertical sync pulse is wide.
6 & 7 — 75 Ohm (video input termination) — DIP switches
6 and 7 provide termination for video inputs 1 and 2,
respectively. Video termination can be accomplished by
using a laptop breakout cable, by connecting a termination
adapter or a local monitor to a monitor breakout cable
(MBC), by using an MBC buffer cable, or by setting a
termination switch on the interface.
DIP switches 6 and 7 provide a termination method to
prevent blooming when a monitor breakout cable is used
but no local monitor or termination adapter is connected.
On — The interface provides 75 ohm video input
termination.
Off — The interface provides high Z (high impedance)
video input termination.
8 — No Backlight — This switch controls illumination of the
LCD backlight.
On — The LCD backlight is off, except for three seconds
at power-up.
Off — The LCD backlight is on while a signal is present at
the selected input.
6 BNC output connectors — These female BNC connectors are for
red (R), green (G), and blue (B) video output, and
horizontal (H), vertical (V). and composite (S) sync output.
7 Remote control connector — Connect a contact closure remote
control device or an RS-232 device (control system or PC
computer) to this 9-pin D female connector for remote switching
between inputs.
Software for RS-232 control is included with the interface. See
chapter 3, “Remote Control” for details.
8 Stereo audio output connector — This 3.5 mm, 5-pole captive
screw connector is for balanced audio output. See “Cabling” for
a wiring guide.
Cabling
The application diagram in this section shows how the system
looks when cabling is completed. Attach cables to the interface
as follows:
1 . Connect the computers’ video outputs to the interface’s
analog input male 9-pin D connectors on the
rear panel. These inputs have the following
pin configuration:
Pin Signal
1 Ground
2 No connection
3 Red video
4 Green video/sync
5 Blue video
6 No connection
7 No connection
8 Horiz. sync/composite sync
9 Vertical sync
If the computers provide the audio input, laptop breakout
cables (LBCs) with audio can be used, or monitor breakout
cables (MBCs) with audio can be used to allow local
monitor output.
DB9 Pin Locations
Male
1 5
6 9
2-10 2-11