| 摘要 |
PURPOSE:To perform easily and accurately pace measurement of an electronic watch by applying informations coping with the gain and lose of time across lamp terminals of the watch in accordance with an external operation. CONSTITUTION:With a switch 24 of an electronic watch 10 closed, the output of an input control circuit 15 becomes a high level to open an AND gate 22 and a transistor 26 is conducted by a one-second differential signal which comes through a latch 20 and an AND gate 21 connected to a dividing circuit 13 and a current is applied to a lamp for illumination 27. In this way, with a magnetic field which is generated by the inductance of the lamp 27, detected by a magnetic microphone 8, the pace gain and lose of the watch 10 will easily and accurately be measured by a pace measuring instrument 9. |
