DESCRIPTION
This application note describes the PM9904BPD evaluation board and together with the SA9904B data sheet provides a complete evaluation platform. The SA9904B is an accurate bidirectional power / energy measurement IC with serial (SPI) interface measuring active as well as reactive power / energy, RMS voltage and frequency. More detailed information specific to the of SA9904B can be found in its datasheet.

FEATURES
■ Designed to be used together with accompanying software as fully functional three phase trivector meter.
■ Better than class 1 operation.
■ On board power supply.
■ Two on-board LED’s for active and reactive pulse output.
■ 3 Phase 4 wire configuration.
■ On-board LCD display.
■ On-board current transformers.
■ Isolated connection to PC parallel port.
■ Easy accessible test pins.
■ Micro-controller plug-in support