An evaluating system for infrared detector elements is designed.It includes a blackbody

a chopper

a single chip microcomputer

a high-precision data acquiring card and the CVI virtual instrument software.The sensitivity of infrared detectors is tested in the condition of specific frequency infrared light irradiation.The noise is tested in non-infrared irradiation.Noise tests are conducted using a sample collection and noise amplitude of various frequency are obtained through the FFT analysis.The system automatically readout the configuration of the computer system to complete the initialization of most parameters.It has many advantages such as simple operation

user-friendly interface

high efficiency test

strong scalability

low cost

high reliability etc.The test experimental result shows that the system could conveniently and effectively test the characteristics of infrared detectors.The precision and speed of experimental results are better than conventional methods.