Change Of Batteries; Functional Description - Beam Trainer QF11A-T User Manual

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User's Manual Beam Trainer QF11A-T and QF11-S

Change of batteries

Press lightly on the marked battery supporter space lid and pull slightly. In order to remove batteries,
pull a strip that is lying under the batteries. When inserting batteries, take care with correct polarity and
positioning of the strip that has to lie underneath them.
Always insert alkaline 1.5 V AA size batteries. Take care that the batteries are the same and both new. In
cases of no use of Beam Trainer devices for a longer period taking batteries out, is recommended.

Functional description

Beam Trainer devices QF11A-T contain an infra-red sensor that senses the interruption or breaking of the
infra-red beam positioned e.g. on the finish line as the athlete crosses it. QF11A-T devices have a radio
transmitter to deliver timing information of beam breaking moment to other devices, which receives and
analyzes this information.
Every QF11A-T has to be in a pair with QF11-S (as shown below) that forms the timing gate.
Attention: the devices must be facing each other by the red windows to form the timing gate.
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