Peaking And Level Adjustment - Extron electronics MTP 1500RL 15HD RS Series User Manual

Installation, cont'd
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Level control — The Level control alters the video output
voltage to affect the brightness of the displayed image. Adjust
the knob while viewing the displayed image to set the level/
boost that provides the best picture quality. See the "Peaking
and Level Adjustment" section for details.
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Peaking control and LED — Peaking affects the sharpness of a
picture. Increased peaking can compensate for mid- and high-
frequency detail loss from low bandwidth system components
or capacitance in long cables.
Adjust this control while viewing the displayed image to obtain
the optimum picture sharpness. The LED lights red when at the
minimum (zero) and maximum (100%) peaking settings.
See the "Peaking and Level Adjustment" section for details.
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Peaking and level adjustment

For best performance and video format detection, the
equalization of the MTP should be adjusted properly.
To achieve this do the following:
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MTP 1500RL 15HD RS Series • Installation
11
The Adjust control's movement is smooth; it does not have
mechanical steps or high- and low-limit stops.
Watch the displayed image to observe the steps of delay.
For best performance the skew of the most delayed signal
should be set to 0 ns (min.) and the other two signals
adjusted to meet it.
The user should always start with minimal peaking and
level, then only increase values as required.
Terminate the green video signal output with a 75 ohm
resistance, and measure the video signal.
Gain adjustment should be set so that a white field video
signal is +0.7 volts from the ground level.
Peaking adjustment should be set using the highest
frequency video format signal for the system in RGB,
component video, or S-video.
Using an alternating black/white pattern, adjust the
peaking so that the video signal matches that of the white
field video. This equalizes both the low frequency (white
field) and the high frequency (alternating black/white
field) to the same video level for best results.
Do not over-peak the signal.