IDK MSD-701AMP User Manual page 182

MSD-701AMP User Guide
Problem
Digital input video is not
being output.
Analog input video is
not being output.
Video is not being
output.
Video has disappeared,
is intermittent, or
presents noise.
Input video and test
pattern are not output.
Video is intermittent.
Video from HDMI/DVI
output is interrupted or
has noise.
182
Cause/Check item/Solution
[1] The time setting for monitoring no-signal input may be too short.
[2] Change the input equalizer setting.
[3] Change the input signal type.
[4] If the source device has multiple output connectors, check the video
output settings for the affected port of the source device.
[5] If using a long cable for input or output, replace it with a 16.4 ft. (5 m)
or shorter cable. Since the MSD has automatic cable length
equalization, long cables can be successfully used, but the MSD's full
performance may not be realized if the cable or connected peripheral
devices are of inferior quality. If the error is solved by replacing the
cable, the signal may have been degraded due to excessive
attenuation or crosstalk. IDK offers high-quality cables,
cable boosters and extenders. Please contact us as needed.
[6] When high-speed signals (high resolution: such as UXGA, WUXGA,
QWXGA, 1080p; DEEP COLOR signal) are presented to the input or
provided by the output, video may not be displayed or noise may
appear. This is largely dependent on cable quality and the
characteristics of connected peripheral devices. If the problem occurs
only when a specific input is selected, the problem is being caused by
difficulties ahead of that input port. If it occurs for all inputs or when an
internal MSD test pattern is displayed, the problem is related to the
output side of the system. One possible solution is to change to a
lower resolution format and/or disable Deep color. You can check the
resolution and color depth of the input signal in
"9.22.3 Input signal status" and you can also limit resolution and
color depth of input signal as defined by the MSD's EDID
configuration settings.
You can specify the output resolution and check the color depth of the
output signal in "9.22.1 Sink device status". It is also possible to limit
the output signal color depth.
[7] If you set the output resolution to other than "AUTO", check if the
selected resolution is supported by the sink device.
As an example, if you select "1080i", video may not be presented by
sink devices that do not support interlaced signals.
For TV output resolutions (480i to 1080p), check the vertical
synchronous frequency. PC output resolutions (VGA to QWXGA)
may not be compatible with LCD TVs.
If you set "9.7.9 Automatic detection of video input interruption" to
"ON", false detection may occur. Change the setting to "OFF".
If the problem occurs in all input channels or when a test pattern is
displayed, replace the output cable with a shorter one or of higher quality.
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