The QD1, a general-purpose quadrature decoder, is required for some shaft encoders you may use in water-level or slope-stability applications. Please note that our CS410 Shaft Encoder does not require the QD1.
Note: A new quadrature instruction is available in the CR1000, CR800, CR850, and CR1000X dataloggers. For questions, contact Campbell Scientific.
Two datalogger pulse count channels are required. A connection to a 5 V output and ground is also required.
Connected sensors are measured by the PulseCount Instruction in CRBasic and by Instruction 3 (Pulse Count) in Edlog. The "up" versus "down" pulses are tallied in the datalogger.