Extron Electronics IN2022HR User Manual

Page 10

IN2022HR OPERATION MANUAL - REV 1.3 12/08/00

Using the IN2022HR with a Local Monitor - Many high-resolution graphic workstations
use sense signals to set resolution, horizontal frequency and vertical refresh rate. The
IN2022HR passes all sense pins between the computer video port and the Local Monitor,
ensuring that the computer can sense the attached monitor and set itself to an appropriate
resolution and scan rate for that device. The Monitor Emulation dipswitches must all be
set to “0” when using a local monitor. This allows all sense pins to pass through,
ensuring proper operation of the graphics card and monitor.

Using the IN2022HR without a Local Monitor - The IN2022HR’s design makes it easy to
use the interface without a local monitor. Because the Local Monitor Output port is
buffered, there is no need for a termination plug to terminate the video signals when used
without a local display device. If you are not using a local monitor, but need to emulate a
specific mode, locate your workstation type and desired mode in the chart on the following
page. If you are not sure of the exact mode to select for your computer, select the setting
shown in bold since it is the most common mode. Using the IN9339 Adjustment Tool
(provided), gently set the dipswitches to the appropriate settings.

Check the Monitor Emulation chart and the IN2022HR dipswitch
settings carefully. An improper setting of the emulation dipswitches
may lead to improper operation and could even result in severe
damage to the computer video port or the monitor. Some modes listed
on the following page may not be supported by certain workstations /
graphics cards.