Abstract: This paper uses a computer to make measurement and analysis automatically, according to the military standard and aviation standards on the power quality of the system, uses Adlink's PCI-9812 data acquisition card for data acquisition. System is designed at the development environment of Delphi, and tested by combining with a reasonable hardware design and appropriate control algorithms for airborne power supply voltage, phase, phase imbalance, frequency spectrum and other related parameters.

Key words: power quality test, PCI-9812, Delphi