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What is the benefit of AGC function?

April 26, 2017agc benefit function

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What is the benefit of AGC function?

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AGC regulates sensitivity of the receiving diode in the BL-700 series. When the barcode is too close to the barcode reader, the laser diode is flooded with light. On the other hand, when the barcode is on the extreme edge of reading range not enough light is reflected back into the receiving diode. AGC compensates for this increase or decrease in light quantity, thus making the reader more stable.