论文部分内容阅读
载波300路主群信号编码设备要求时钟频率稳定度为±20×10~(-6)。但是,石英谐振器在宽温度(-40～+70℃)范围内的频率相对偏移量为10~(-5)。为了满足钟频稳定度、设备小型化和开机快速工作的要求,我们对石英晶体振荡器采用温度补偿方法,使得34.368兆赫晶体振荡器的频率稳定度在环境温度(0～50℃)内达到10~(-6)的指标。下面对温度补偿晶体振荡器作一些简要叙述。
The carrier 300-channel main group signal coding device requires a clock frequency stability of ± 20 × 10 -6. However, the relative displacement of the quartz resonator at a wide range of temperatures (-40 to + 70 ° C) is 10 -5. In order to meet the requirements of clock frequency stability, miniaturization of equipment and quick start-up work, we adopt a temperature compensation method for the quartz crystal oscillator so that the frequency stability of the 34.368 MHz crystal oscillator reaches 10 at ambient temperature (0 to 50 ° C) ~ (-6) indicators. The following is a brief description of the temperature compensated crystal oscillator.