| 摘要 |
PURPOSE:To set the signal level in a wide range by so arranging that a resolution display lamp is moved in accordance with the shift of a digit of the signal level. CONSTITUTION:A level changing command and a resolution setting command input from a rotary level setter 23 and a resolution setting key 24 (24a, 24b) are input to a level data processing part 31. In the processing part 31, the resolution in a digit designated by a resolution display lamp 19 which is now being displayed is added to or subtracted from a signal level D of three digits now being displayed through the rotating manipulation of the setter 23. As a result, if the level D goes beyond the set range, an abnormal status is set by 33 and the processing part 31 sends a set resolution Rs set by the key 24 to a memory part 32. If the level D is within the set range, the level is stored in the memory part 32. Further, when the digit is shifted in consequence to the change of the level D in accordance with the rotating manipulation of the setter 23, a resolution controlling part 34 moves the indicating digit of the display lamp 19 in accordance with the shift of the digit. And, if the resolution is outside the indicating digit, it is displayed by a lamp 20 showing that the resolution is outside the indicating digit. |
