The QD1, a general purpose quadrature decoder, is required for some shaft encoders used in water-level or slope-stability applications. Please note that our CS410 Shaft Encoder does not require the QD1.
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.