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How to Measure the Power of a Bar Code Scanning Laser

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How to Measure the Power of a Bar Code Scanning Laser

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Ophir offers a special bar code scanner photodiode sensor, the BC20, to measure the power of scanned light beams as well as other short duration light sources. It has a peak and hold circuit that measures the power coming from the sensor and stores the peak power from the start of the measurement period to the end of the measurement period. The highest value measured during the measurement period is held and displayed on the meter.

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