
Preface
Digital storage oscilloscopes first appeared around a quarter of a
century ago. At that stage their performance was limited, not even
approaching that of the analog (cathode ray tube) storage
oscilloscopes of the day in many respects, such as bandwidth, in
particular. Nevertheless, they offered certain facilities not
available in the earlier analog storage oscilloscopes, principally
pre-trigger storage, permitting the user to capture part of a
waveform which preceded a trigger event. Since those early days,
development has been continuous and intensive, with the result
that digital storage ...