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TDC-2时间显示控制器是强震观测台网中强震仪的同步定时装置。通常,它用于内部配有TCG-1时间编码发生器的强震加速度仪。TDC-2有内部的参考时钟,其晶体振荡器的精度超过3×10~(-7)(温度范围为0°-50℃)这个内部时钟可在试验室内与国际标准时间校准。
The TDC-2 time display controller is a synchronous timing device for a strong seismometer in a strong earthquake observing network. In general, it is used in strong earthquake accelerometers equipped with a TCG-1 timecode generator. The TDC-2 has an internal reference clock with crystal oscillator accuracy of over 3 × 10 -7 (temperature range 0 ° -50 ° C). This internal clock can be calibrated within the lab and internationally.