LightSpeed Technologies user manual the LES 780iR

5. IR Sensor Placement

Sensor location is very important for optimum performance of the LES 780iR Classroom Amplification System. Place the sensor in a temporary location and test the system (Step 7 below) before choosing a permanent location. Test the mic at the farthest points from the sensor to confirm signal is clear throughout the classroom. (Dark surfaces reflect less infrared light and may hinder signal transmission.)

a. Suspended Ceiling Mount

•Lift the ceiling tile nearest the grid rail in your desired sensor location. Guide one side of the C-clip over one edge of the grid rail. Providing firm support to the back of the grid rail with one hand (to prevent bending), firmly and carefully snap the second side of the C-clip over the edge of the rail.

•Uncoil sensor wire. Insert sensor wire jack into sensor plug. Loosely secure wire overhead and route it back to the receiver.

•Plug into any of the six sensor inputs on the back of the LES 780iR.

•Complete Step 7 (Testing) to confirm optimum sensor location, and perman- tently secure sensor wire from the sensor back to the receiver.

b. Wall or Solid Ceiling Mount

•Screw the plastic mounting strip on to a place high on the wall or in the middle of the solid ceiling.

•Firmly snap the C-clip on the back of the IR sensor onto the plastic mounting strip with the sensor plug hanging down (if a wall mount) or toward the receiver location (if ceiling mount).

•Uncoil the sensor wire. Insert sensor plug into the female end of the sensor wire. Loosely secure wire overhead and route it back to

the LES 780iR.

•Connect sensor wire to any of the six sensor inputs on the back of the LES 780iR.

•Complete Step 7 (testing) to confirm optimum sensor location and permanently secure wire from the sensor back to the LES 780iR.

[ note: ]

The LightMic rechargeable batteries come installed at the factory. There is enough charge within the LightMic batteries to adequately test the system during initial setup. However, the batteries need to be charged for 8 or more hours before regular use for optimum battery life.

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