Extron Electronics MTP 1500RL 15HD A SEQ User Guide - Manual (Page 15)

d
Adjust skew control — This control delays the selected red, green, or blue video signal
up to a maximum of 62 nanoseconds (ns), made in 2 ns incremental steps. Rotate the
control counterclockwise to reduce the delay or clockwise to increase it (see “
Skew
Delay Compensation ” for details).
NOTES: • The movement of the adjustment control is smooth and does not have
mechanical steps or high- and low-limit stops.
• Watch the displayed image to observe the steps of delay.
• For best performance set the skew of the most delayed signal to 0 ns
(minimum) and adjust the other two signals to meet it.
e
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 or boost that
provides the best picture quality (see “
Peaking and Level Adjustment ” section for
details).
f
Peaking control — Peaking affects the sharpness of a picture. Increased peaking can
compensate for mid- and high-frequency detail loss due to 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 the peaking is at the minimum (0) and maximum
(100%) peaking settings (see the “
Peaking and Level Adjustment ” section for
details).
NOTE: To avoid possible video loss due to errors in the format detection, always
start with minimal peaking and level, then increase values only as required.
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:
1. Terminate the green video signal output with a 75 ohm resistance, and measure the
video signal.
NOTE: • Set the gain adjustment so that a white field video signal is +0.7
volts from the ground level.
• Set the peaking adjustment using the highest frequency video
format signal for the system in RGB, component video, or S-video.
2. Using an alternating black and 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 and white field) to the same video level for
best results.
Do not over-peak the signal.
MTP 1500RL 15HD A SEQ • Operation 9