Extron electronics MTP A/V Series, Руководство пользователя

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MTP AV Series • Operation 14
Operation
This section describes:
• Front Panel Features
•
Troubleshooting — Skew Delay Compensation
Front Panel Features
SHARP C GAIN Y GAIN SHARP GAIN
MTP R S-video Receiver
Front Panel MTP R Composite Video
Receiver Front Panel
2 3 3 1 2 3 1
Figure 18. MTP Receiver Front Panels
a
Power LED — When lit, this LED indicates power is applied to the MTP.
b
Sharpness — Adjusts the output image sharpness for long cable runs.
c
Gain control — Adjusts the brightness of the output image to compensate for long
cable runs.
Composite video receivers — There is only one gain control on composite video MTP
receivers.
S-video receivers — There are separate controls for luminance (Y) and
chrominance (C) on S-video MTP receivers. If the S-video output chrominance setting
on the MTP receiver is too low, the image may appear in monochrome. Adjust the
chrominance (C gain) until color appears.
NOTE: All control knobs are removable to limit access if desired.
Troubleshooting — Skew Delay Compensation
CAT 5 TP cable can cause registration errors (in which luminance leads or lags
chrominance) between the Y and C video signals on S-video transmitter/receiver pairs. Try
using the following methods to minimize or eliminate pair skew:
•
Switch to Extron Enhanced Skew-Free AV UTP cable.
• Add an S-video-to-BNC adapter and a skew compensation cable equal to the length of
pair skew to the receiver output.
•
Install an S-video-to-BNC adapter and an SEQ 100 15HD Skew Equalizer on the
receiver video output and adjust the skew for the leading video image.