关键词: 光信号处理, 红外接收, 测试, ASK调制信号

Abstract: The paper introduces a test technology for optical signal processing chip commonly applied in infrared receiving system. During the test, ASK modulation signal must be entered. In the paper, SCM is used instead of signal generator to produce test signal, which effectively reduces the cost. The SCM contains an amplifier, a band-pass filter, and a comparator. This paper describes the function and the band-pass filter parameters test including test signal generating method, SCM signal processing, and the method of testing and trimming the center frequency of bandpass filter.

Key words: optical signal processing, infrared receiving, test, ASK modulation signal