Metrology Pulses Outputs and UART Opto-Port Interface

The PIC32CXMTSH-DB board integrates several measurement points for the pulse outputs (PD17, PD18 and PD19) available with the PIC32CXMTSH device. The methods for pulse measurements are:
Figure 1. Metrology Pulse Output Interfaces Schematic
The PIC32CXMTSH-DB board features a UART Opto-port interface, made up of an infrared emitting diode and a phototransistor, to communicate with external devices during handheld AMR (Automatic Meter Reading).
Figure 2. UART through Opto-Port Interface Schematic