| 摘要 |
Apparatus for displaying the maximum or minimum of a series of digitally coded values having a register for storing the highest or lowest value that has so far occurred, in which the contents of the register are updated whenever a value occurs which is more extreme than the stored value. The stored value is displayed either when an equal value occurs in the series or after a predetermined number of lower values has occurred. The stored value is cleared when 4096 lower values have occurred to enable the apparatus to follow a reduction in the maximum level or an increase in the minimum level. A method employing the apparatus for testing a pulse code modulation channel is described. |
