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OPB350W187Z Datasheet(PDF) 11 Page - OPTEK Technologies |
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OPB350W187Z Datasheet(HTML) 11 Page - OPTEK Technologies |
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11 / 24 page  11 OPTEK gives you the tools to help you take your ideas to market. USING THE OPB732CZ WITH THE OCB100CZ Connect the OCB100CZ to a power source as described on page 7 “Powering up the OCB100CZ”. Plug the OPB732CZ connector into the 4 pin Molex mating connec- tor on the OCB100CZ , and then apply power to the circuit. Adjust the phototransistor emitter load resistor to equal approximately 10Kohms (RL @10K) by placing the shorting bar on the board betweens pins 2 & 3 (see table on pg. 9) of the header. Point the OPB732CZ at a sheet of white paper and position its front surface about ½ ” from the paper. While holding the sensor in this position, momentarily ground the pin 4 of connector J1 by touching the green wire of the mating connector to the black wire (ground) of the mating connector. After approximately 2-3 seconds you should see an onboard green LED flash three times to indicate that the sensor has been calibrated at the distance it is held from the paper. If the unit calibrated correctly, and you have not allowed the sensor to move from the position it was calibrated at, there will be no LEDs lit on the calibration PCB. This means that the LED drive has ramped up to a current level sufficient to generate an output voltage level (V OUT ) @ to ½ Vcc. Now slowly move the sensor away from the sheet of paper until a green LED lights on the PCB. This light indicates that V OUT has dropped to 1/3 Vcc or less. As you move the sensor closer to the paper, this green LED will go out and then come back on at a distance very close to the surface of the paper. At some distance between the two distances |
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