A TC-OCXO is a temperature compensated crystal oscillator
(XO) with limited temperature stabilization. The concept of a TC-OCXO is a combination of an Oven Controlled Crystal Oscillator (OCXO) and a Temperature Compensated Crystal Oscillator (TCXO). The TC-OCXO is characterized by its high stability of about 0.5 ppm to 100 ppm (10exp-6), which is about one power of ten higher than that of the unstabilized crystal oscillator. In addition, the TC-OCXO has a relatively low power consumption.