Cec Introduction; Cec Devices - Quantum Data 881 User Manual

CEC Introduction

CEC devices

882 Video Test Instrument User Guide (Rev A.35)
Consumer Electronic Control (CEC) is an HDMI option that provides automatic power-on,
automatic signal routing, and single-point remote control for CEC-enabled products. The
HDMI CEC Develoment & Compliance Test Suite enables manufacturers to quickly
integrate CEC into their products and perform all CEC-related tests found in the HDMI
Compliance Test Specification. There are two optional applications in the Suite that pertain
to CEC:
• The Interactive Troubleshooting Environment (ITE) lets developers configure their CEC
devices, and send messages and faults, so that both nominal and stressful conditions
can be generated.
• The Test Management Environment (TME) is a graphical environment that houses all
the tests. It runs on a PC and communicates with the generator over an Ethernet
connection.
The physical interface for this bus is a single wire which connects to all of the devices in
the system. The CEC protocol defines the specific use of that single wire at all times.
An HDMI environment can consist of several types of devices. Each of the devices can be
tested using the 882CA generator/analzyer and the CEC TME application. The HDMI
devices currently supported for testing are listed below.
• TV – A device with HDMI input that has the ability to display the input HDMI signal.
Generally it has no HDMI output. However the HDMI specification does cover that
case.
• Recording device – A device that has the ability to record a source such as an internal
preset or an external connection.
• Set top box – A device that contains a tuner.
• DVD player – A playback device that has the ability to play media.
• Audio device – A device that is currently providing an AV stream via HDMI.
• CEC switch – An HDMI switch that responds to CEC commands to switch the source
of audio/video.
• Unknown – Various other HDMI devices, such as:
• Menu Providing Device A non-display device that may render a menu on TV.
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