HDMI 201 Tx/Rx • Installation and Operation
Installation and Operation, cont’d
2-28
HDMI 201 Tx/Rx • Installation and Operation
2-29
Transmitter power indicator
a
Power LED —
HDMI 201 Tx (non-Decora) —
This front panel LED lights
green to indicate that the unit is receiving power:
HDMI 201 A D Tx (Decora) —
This two-color front panel LED
lights to indicate signal and power status as follows:
Amber —
The unit is receiving power but not an HDMI input.
Green —
The unit is receiving power and a signal is present on
the HDMI input.
Receiver indicator
a
Power LED —
HDMI 201 Rx (non-Decora) —
This front panel LED lights
green to indicate that the unit is receiving power:
HDMI 201 A D Rx (Decora) —
This two-color front panel LED
lights to indicate signal and power status as follows:
Amber —
The unit is receiving power but not a TP input.
Green —
The unit is receiving power and a signal is present on
the TP input.
System operation
After the transmitter, the receiver, and their connected devices
are powered up, the system is fully operational. If any problems
are encountered, ensure all cables are routed and connected
properly.
N
Ensure that the video source and display selected for the
DDC are properly connected to the transmitter/receiver
pair, and that the transmitter, the receiver, and the
display have power applied before power is applied to
the video source. If all other devices are not turned on
before
the video source, the image may not appear.
Technical Points for Digital Video and Content
Protection Encryption
•
Digital Visual Interface (DVI)
is a digital video format
that was created by the computer industry in 1999.
•
High Definition Multimedia Interface (HDMI
™
)
is a
multimedia format that was created by the consumer
video industry in 2003.
The HDMI format is built onto the DVI format,
adding digital audio and control while reducing the
size of the connector.
The HDMI format is likely to replace the DVI format
in the near future.
With passive adapters, the HDMI format is backward
compatible with the DVI format.
•
With Extron adapters and/or cables, the HDMI 201
fully supports either format, regardless of the connector
type on the video source and display. See appendix A,
"Reference Information," for part numbers.
•
High-bandwidth Digital Content Protection (HDCP)
is
an encryption method that protects copyrighted digital
entertainment material that uses DVI video.
HDCP is generated by video player hardware,
enabled by the video content.
The HDCP key is transmitted with the Display Data
Channel (DDC).
The DDC signal line was designed for the DDC’s low
data rate; the HDCP key rate is much higher.
♦
Without active buffering
, an HDCP key signal
can travel only a short distance. The display
may properly receive the digital video signal, but
not the HDCP key. Without the key, the display
cannot decrypt the video signal. Symptoms of
undecrypted video may include a flashing black
or blue screen or “snow”.
♦
With active buffering
, an HDCP key signal can
travel as far as other signals to ensure proper
decryption.
♦
The HDMI 201 actively buffers the HDCP key
.
