System and method for generating a jittered test signal

H - Electricity – 04 – B

Patent

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H04B 3/46 (2006.01)

Patent

CA 2564351

A multi-speed jittered signal generator (216,400) that generates a full-speed jittered signal (404) by scaling a low-speed jittered signal (420) using a frequency scaler (428). The low-speed jittered signal is created by injecting a modulation signal (416) into a reference signal (412) using a jitter injector (432). Injecting jitter into a low-speed reference signal allows the full-speed jittered signal to be of higher quality than conventional jitter signals created by injecting jitter information into a full-speed reference signal. The multi-speed jittered signal generator may be used as part of a testing system (208) for testing various circuitry, such as high-speed serializer/deserializer circuitry (220).

Générateur de signal vacillant à vitesses multiples (216, 400) qui génère un signal vacillant à pleine vitesse (404) en comptant un signal vacillant à vitesse lente (420) en utilisant un compteur de fréquence (428). Le signal vacillant à vitesse lente est créé en injectant un signal de modulation (416) dans un signal de référence (412) en utilisant un injecteur d~instabilité (432). L~injection d~instabilité dans un signal de référence à vitesse lente permet au signal vacillant à vitesse rapide d~être de meilleure qualité que les signaux conventionnels créés en injectant une information instable dans un signal de référence à pleine vitesse. Le générateur de signal vacillant à vitesses multiples peut être utilisé comme partie d~un système de test (208) pour tester différentes circuiteries, telles que la circuiterie convertisseur parallèle / série ou convertisseur série / parallèle à vitesse rapide (220).

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