Electricity: measuring and testing – Plural – automatically sequential tests
Patent
1987-04-06
1989-05-23
Karlsen, Ernest F.
Electricity: measuring and testing
Plural, automatically sequential tests
371 1, G01R 3128
Patent
active
048333972
ABSTRACT:
A tester-verifier apparatus operates to select a single one of a plurality of system clocks to verify that the clock width falls between accepted parameters. Secondarily, the apparatus selects representative clock signals for comparison with a reference clock to verify that the skew falls within accepted parameters. Additionally the apparatus can measure the exact time value of any pulse width or skew relationship to within 500 picoseconds (10.sup.-12). Any selected system clock signal is split into two channels, one of which has a controlled delay time programmed by a microprocessor to develop minimum and maximum pulse parameters against which the selected clock signal is logically compared to see if the parameters are satisfied.
REFERENCES:
patent: 4542505 (1985-09-01), Binoeder et al.
patent: 4574354 (1986-03-01), Mihalik et al.
patent: 4577318 (1986-03-01), Whitacre et al.
patent: 4620302 (1986-10-01), Binoeder et al.
patent: 4628253 (1986-12-01), Yu et al.
Cass Nathan
Karlsen Ernest F.
Kozak Alfred W.
Miller Kenneth L.
Unisys Corporation
LandOfFree
Tester for verification of pulse widths in a digital system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tester for verification of pulse widths in a digital system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tester for verification of pulse widths in a digital system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1732730