| 摘要 |
PURPOSE:To enable signal sampling at the moment when a trigger signal is generated, by correcting trigger timing corresponding to the phase delay of an input signal due to passage via low-pass filtering circuit. CONSTITUTION:An analog signal detected by detector 1 has a disused frequency component removed by active LPF3 and is sampled by sample holding circuit 4. A sampling signal applied to this circuit 4 from trigger pulse generating circuit 6 is corrected in terms of time delay by trigger timing correcting circuit 7 corresponding to the phase delay due to LPF3. Therefore, the input signal value at the moment when a sampling pulse is generated is sampled, so that accurate measurements by A/D conversion, etc., can be take. |
