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Get Power Status from AV components without Discrete Codes
The Domain Controller needs to know the Power Status (whether the device is on or off) of each device in the system. If the AV
component has Discrete On/Off commands, this is sufficient. Discrete IR codes from www.remotecentral.com are now included in
the Ubiquity software and accessible through the Device Description Wizard.
If an AV component does not have Discrete On/Off commands, then you will need to provide Power Status via either Video Sync
or a Digital Signal controlled by a current sensor or light sensor.
When you add an AV component to the project, it will be obvious
whether or not that component has discrete power on and off commands .
Power Status via Video Sync
Obtaining Power Status of an AV component via Video Sync is very easy with both the Domain 3000 and the Domain 5000. With
the Domain 3000, connect a composite video cable from a spare composite output signal of the AV component to one of the four
Video Sync input ports on the back of the Domain 3000. If the AV component does not have a spare composite output port, then
put a passive composite video splitter on one of the ports that is already in use. That is all there is to do. The software will take
care of the rest.
With the Domain 5000, you do essentially the same thing, but the Domain Controller end of the composite video cable gets
connected to 3-pin Phoenix connector as described in Video Sync / Digital Inputs.
One very important consideration is to make sure that the composite signal is available when the real video signal output is being
transmitted. For example, if you are sending the video signal from a Satellite Receiver to an AV surround receiver via S-Video,
then it is likely that the composite signal from the Satellite Receiver will also be sending a video signal and that it can, therefore, be
used to determine the power status of the Satellite Receiver. However, if the video signal from the Satellite Receiver to an AV
surround receiver is Progressive video on Component, then it is unlikely that the composite signal from the Satellite Receiver will
exist at the same time.
Power Status via a Current Sensor
Power Status of an AV component via a current sensor is relatively straight forward with both the Domain 3000 and the Domain
5000. Plug the AV component in to a current sensor such as the Xantech CSM1 Current Sensor, and connect a wire from the
current sensor to a digital input on the back of the Domain Controller.
Power Status via a Light Sensor
A light sensor (such as the Niles Audio Light Sensor) is used to detect the light on the front panel display of an AV component
when the component is turned on. This assumes the display turns off when the component is turned off. The light sensor is pasted
on to the front of the display just like a IR mouse emitter would be. The light sensor goes to its own control unit which then plugs