We are trying to measure the light intensity with an Apogee Quantum light sensor (https://www.apogeein...Q-200manual.pdf). Still very new to using labjack and data acquisition and we have a few questions as our data logging revealed a clearly sinusoidal pattern from multiple light sources.
1) How do we know what range to select if logging on the UDlogger? Currently we have selected LB_rgBIP5V because the sensor is a 5V calibrated sensor. But honestly, I struggled finding documentation on how to determine which range to select so selecting this range was all but a guess.
2) Will will need to connect the ground for sensor to an earth ground due to this sinusoidal pattern?