Extron Electronics RGB 580xi User Guide - Manual (Page 11)

5-pin Contact Closure Captive Screw Con_lateral.eps
Contact Closure
Contact closure
Contact closure
5VDC
Ground
5VDC
CONTR
OL
A
B
C
D
E
Prewired male control connector
Male VGA connector
Pin Contact Closure Description
A Contact closure + Contact closure + circuit
B Contact closure - Contact closure - circuit
C +5 V +5 V source for powering AAP devices
D Gnd Signal ground for powering AAP devices
E -5V -5 V source for powering AAP devices
NOTE: The contact closure pins on the RGB 580xi’s front panel are not to be used
for horizontal shift control. See the horizontal shift control wiring in the
15-pin HD pin out table in
c on the previous page.
e
Video output: level control — This control adjusts picture brightness by compensating
for signal amplitude loss caused by cable resistance. See “Front Panel Adjustments” .
f
Video output: peaking control — This control adjusts picture sharpness by
compensating for cable capacitance caused by long cable runs. See “Front Panel
Adjustments” .
g
DIP switches — This bank of DIP switches controls DDSP (Digital Display Sync
Processing), serration pulse output, SOG (sync on green) output, vertical sync width,
sync polarity, and composite sync output. Moving a switch up sets it to On and moving
it down sets it to Off.
NOTE: The default for all DIP switches is Off (down).
1 — DDSP (Digital Display Sync Processing) — This feature may be necessary for
digital display devices such as LCD, DLP (digital light processing) and plasma displays.
Use this option if the image is not displayed properly after other options, such as
serration pulse and vertical sync pulse width, have been explored.
On — The interface uses DDSP instead of ADSP. DDSP does not process the sync
signal.
NOTE: DDSP disables the horizontal shifting control.
Off — The interface performs sync processing operations, such as centering, with
ADSP.
2 — Serr (serration pulse) — Many LCD and DLP projectors and plasma displays must
have serration pulses removed from the sync signal in order to display 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.
RGB 580xi • Installation and Operation 7