| 摘要 |
PURPOSE:To facilitate the capture of phenomena which have been difficult to observe and to expand the range of utilization of one device to a large extent, by imparting selectivity and flexibility to the triggering conditions. CONSTITUTION:The signals from a digital devices are applied to comparators CM1-CMn wherein the triggering conditions are set by setting switches S1- Sn, through channel terminals CH1-CHn. The outputs of the comparators CM1-CMn are applied to mode setting switches SW1-SWn. When the switches are placed on the sides (a), an inverted OR mode is obtained. When the switches are on the sides (b), an AND mode is obtained. The outputs of the mode setting switches SW1-SWn are applied to an AND circuit 6 through an inverted OR circuit 4 and also to an AND circuit 5. A mode switch MS is automaically set to the side B when all the mode setting switches SW1-SWn are in the AND mode and automatically set to the side A when only one switch is set in the inverted OR mode, and outputs the trigger signal to terminal T. |
