| 摘要 |
<p>A method and apparatus for detection of missing pulses (22-28) from a repetitive pulse train (20) including signal detection circuits for capturing the rising and/or falling edges of an input signal (60), time-stamping the captured edges, calculating the maximum and minimum instantaneous frequency over a specified time period, and displaying such frequency values (31, 32, 33, 35, 37, 39). Instantaneous frequency values between any two adjacent edges are calculated based upon the time-stamps of the edges. The instantaneous frequency values in a specified time period are then sorted to find the minimum (32, 35, 39) and maximum (31, 33, 37) frequency values for that time period. These instantaneous frequency values are displayed in the form of a histogram (29) evidencing the occurrence or lack of occurrence of missing pulses (22-28) from the input signal (60). <IMAGE></p> |
