Steven,

The SPS-1 Video Sync Power Sensor is a device that monitors the on and off status of almost any video component. Since most televisions and video source equipment output some sort of video signal or "blue" screen when they are on, the SPS-1 can sense true on and off status.

When the attached component is powered on, the SPS-1 detects the vertical sync pulse present in the composite video signal or on the Y output of component video signal and sends a logic signal to the System Interface Module.

If you need to you can Y the video signal out of the source component and put the SPS-1 on one side of the Y and the original destination on the other side of the Y.

The SPS-1 has a high impedance input and will not effect picture quality.

Thanks
MitchM @ RTI