公开(公告)号：EP0225705A3

公开(公告)日：1988-08-03

申请号：EP86308185

申请日：1986-10-21

申请人： TEKTRONIX, INC.

发明人： CARLTON, DALE E. ,  BAKER, CLIFFORD EDWIN ,  HENRICKSEN, RONALD MARK

IPC分类号： G01R13/20 ,  G01R13/32 ,  G01R13/34 ,  G01R29/02

CPC分类号： G01R13/345 ,  G01R13/32

摘要： The distribution with respect to time of an event defined by the waveform of a repetitive input signal having a magnitude that lies within a predetermined range of values is observed by generating a sample signal at least once during each repetition of the input signal, generating an n-bit digital timing signal rep­ resentative of the time of occurrence of a sample signal relative to the time of occurrence of the trigger signal, and sampling the repetitive input signal and generating a memory enable signal in the event that the magnitude of the input signal at the time of sampling falls within the predetermined range of values. The memory locations of a memory having 2
n separately address­ able memory locations are allocated respectively to the 2
n pos­ sible values of the timing signal, and the contents of a memory location of the memory means are incremented by one unit in the event that a memory enable signal is generated in response to a sample signal that is associated with the timing signal to which the location is allocated.