Allen Bradley Photo Sensors

[chrisinmd]

Originally Posted by Eldarion

Many CCDs, such as those found in digital cameras/camcorders, are very sensitive to infrared light.

Simply aim the emitter at your camera, and a bluish-white light should show up if the emitter is working.
An old black-and-white camcorder will have greater sensitivity than a color one, and a Sony camera in NightShot mode will allow you to see infrared like you would see any other light source, including reflections.

Thanks for the help, guys.
Using the camera to test the emitter is a great idea, I might try that. I did play with the sensitivity adjustments, but the test LED remained ON, even when it wasn't directed at the emitter. Lining them up and breaking the beam only caused the LED to dim slightly, instead of going out completely. My colleague and I are completely stumped, and are out of ideas.

Also, does anyone know why there is a sensitivity adjustment on the emitter module? What does it do? Does it change the intensity of the IR beam?

Thanks,
-Chris