The temperature compensated crystal oscillator is also called the temperature compensated crystal oscillator. English abbreviated as tcxo (temperature compensated crystal oscillator) is to maintain the output frequency of the crystal oscillator within a certain accuracy range by a certain compensation method (such as capacitance compensation, thermistor network compensation, etc.) in a certain temperature range (such as Crystal oscillators of class 10-7, class 10-6). It features good startup characteristics, low power consumption, and high frequency-temperature stability. Widely used in a variety of communications, navigation, radar, satellite positioning systems, mobile communications, program-controlled telephone switches, all types of electronic measuring instruments.