公开(公告)号：DE1766145B1

公开(公告)日：1971-01-21

申请号：DE1766145

申请日：1968-04-09

Applicant: CARY INSTRUMENTS

Inventor： A HOLLY JOHN

IPC: G01R19/00 ,  G01R19/22 ,  H03K9/02 ,  G01R19/04

Abstract: 1,227,627. Measurement of pulse signals. CARY INSTRUMENTS. April 24, 1968 [April 26, 1967], No. 19462/68. Heading G1U. The mean magnitude of periodic pulses 12, Fig. 3, subject to noise and jitter and superimposed on a quiescent level 13 which is relatively free from noise is measured by passing the pulse train through a D. C. blocking circuit 15, Fig. 1, and sampling the output during the intervals #T 2 between pulses. The sampler output may be filtered to remove ripple, amplified and applied to an indicator, recorder or process-control system. The pulses need not be rectangular. The blocking circuit may comprise an RC network or a transformer and the sampler may utilize an FET. The sampler is synchronized with the signal source in such a way that the sampling interval is of slightly shorter duration than the interval 13. In a time division multiplex system, Fig.4 (not shown), where a pulse train comprises pulses belonging to several different channels, a sorter may be provided to reconstitute separate pulse trains for each channel.