Abstract: Disclosed is a system and related methodology for providing fast low frequency jitter rejection in the measurement of signals under test. A signal under test may be sampled alternately with a reference signal under similar conditions. The resulting sampled signal blocks may then be processed to subtract the known calibrated value of the reference signal from the average signal under test.

Abstract: Disclosed is a system and related methodology for providing fast low frequency jitter rejection in the measurement of signals under test. A signal under test may be sampled alternately with a reference signal under similar conditions. The resulting sampled signal blocks may then be processed to subtract the known calibrated value of the reference signal from the average signal under test.

Abstract: A method of estimating random jitter from measured samples of a transmitted data signal includes a first step of obtaining a plurality of measurements (e.g., pulse widths) for selected signal edges within a transmitted data stream, where the data stream comprises a repeating data pattern having a known bit length and known number of rising edges, and wherein the time difference between adjacent measurements is determined by an event count increment equal to an integer multiple of the known number of rising edges. A time interval error (TIE) value is then computed for each measured signal edge and transformed into corresponding frequency components that are representative of both noise floor and multiple distinct frequency peaks. Noise floor is isolated and the power of the noise floor may be computed to provide an estimate of random jitter variance, from which the standard deviation may be calculated.

Abstract: Methodologies are disclosed for analyzing periodic jitter is a signal pattern using a continuous time interval analyzer. Sampled signal patterns may be correlated using time interval error calculations to determine start and stop sequences within sampled blocks of signal data while sampling synchronization may be achieved based on time interval calculations or pattern interval error calculations.

Abstract: Methodologies are disclosed for analyzing periodic jitter is a signal pattern using a continuous time interval analyzer. Sampled signal patterns may be correlated using time interval error calculations to determine start and stop sequences within sampled blocks of signal data while sampling synchronization may be achieved based on time interval calculations or pattern interval error calculations.