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Front panel controls – Extron Electronics IN2022HR User Manual

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©2000 - INLINE, INC. IN2022HR OPERATION MANUAL - REV 1.3 12/08/00

Front Panel Controls


The IN2022HR features fully automatic operation, however, the interface offers several
external controls that allow users to optimize the unit’s performance to meet the needs of
specialized applications. Gain, sharpness and horizontal position control adjustments are
located on the front of the IN2022HR. Turning the adjustments clockwise will increase the
value, and counterclockwise will decrease it.

GAIN CONTROL

The gain control is a small black knob located on the left side of the unit’s front panel. The
gain control adjusts the output voltage of the red, green, and blue outputs simultaneously
(ensuring that gray scale is maintained), and may be used to compensate for signal loss due
to long cable runs. The gain adjustment range is .7 in the minimum position (30% decrease)
and 1.3 in the maximum position (30% increase). The factory default setting is 1.0 (unity
gain).

SHARPNESS CONTROL

The IN2022HR sharpness / peaking circuitry provides variable high frequency equalization
that can compensate for high frequency losses due to long output cable runs. The amount of
high frequency boost required will vary depending on the length and bandwidth performance
of the video output cables, and, to a lesser extent, the resolution and frequency of the input
signal. When using short output cables, the sharpness control should usually be placed at the
minimum setting to avoid over-peaking.

The sharpness control is located between the gain control knob and the local monitor output
port. The factory default setting is minimum (no sharpness / peaking enhancement). The
following guidelines are useful in selecting the optimal sharpness / peaking setting:

If the image is soft and / or fine details in the picture lack clarity:

The sharpness is probably set too low. Increase the sharpness control setting.

If a white, ghosted image appears to the right side of the lines / characters:

The sharpness is probably set too high (over-peaked). Decrease the sharpness control
setting.

HORIZONTAL POSITION CONTROL

The horizontal position control is a small black knob located adjacent to the front panel
power LED display. This adjustment allows users to shift the position of the image on the
data display device from left to right. The horizontal position control does not effect the
local monitor.

If the horizontal position adjustment is set to an extreme position on either the display device
or the IN2022HR, the output image may appear dark and / or the colors may be displayed
improperly. To position the video image and achieve optimum picture quality: