Patent ID: 6573761
Filing Date: 2003-06-03
Classification: G11C,H03L

Abstract:
A timebase for a signal sampler receiving an applied signal having a synchronous trigger, comprising:a reference source providing a reference signal having a predetermined period, coupled to a reference delay that shifts the reference signal by a predesignated time interval; a first sampler and a second sampler, each receiving the reference signal; a third sampler and a fourth sampler, each receiving the shifted reference signal; a trigger delay receiving the synchronous trigger and shifting the synchronous trigger by a programmed time interval; a first strobe activated by the synchronous trigger causing sample acquisitions of the reference signal by the first sampler and sample acquisitions of the shifted reference signal by the third sampler; a second strobe activated by the shifted synchronous trigger causing sample acquisitions of the reference signal by the second sampler and sample acquisitions of the shifted reference signal by the fourth sampler, and causing sample acquisitions of the applied signal by the signal sampler; and a timing analyzer determining the timing of the sample acquisitions by the signal sampler relative to the synchronous trigger based on the sample acquisitions of the first sampler, the second sampler, the third sampler, and the fourth sampler.