| 摘要 |
<p>PURPOSE:To decrease the error of measurement by correcting variation of characteristics incorporated in the using parts in the measuring circuit by using the software program. CONSTITUTION:Variation of oscillation frequency which is incorporated in a crystal oscillator 1 is previously measured and data including the using condition of temperature are stored in a memory (ROM)4. When the output of the crystal oscillator 1 is counted to measure the time, the output can be obtained at a display measuring section 3 when a CPU6 reads count number of a frequency division circuit 2 and correcting is performed by proceeding the operational procedures stored in a memory 5 on the basis of the data stored in the memory 4.</p> |
