DF/dT trigger system and method

摘要

A dF/dT trigger system and method includes instantaneously triggering on a frequency deviation of a data signal, which can be associated with an SSC signal. After receiving a signal at an input terminal of a test and measurement instrument, the signal is low-pass filtered and transmitted to trigger circuitry. When a frequency deviation rate in the filtered signal exceeds or crosses one or more thresholds, a trigger event is produced. Also disclosed is a test and measurement instrument including an input terminal to receive the signal, input circuitry to receive and process the signal, and dF/dT trigger circuitry configured to receive the signal and produce a trigger event when a frequency deviation in the signal exceeds or crosses one or more thresholds.

主权项

1. A test and measurement instrument, comprising:
an input terminal to receive a signal; first input circuitry to receive the signal from the input terminal; second input circuitry structured to receive an input from a user to configure one or more trigger thresholds; and delta Frequency/delta Time (dF/dT) trigger circuitry coupled to the first input circuitry, the dF/dT trigger circuitry configured to receive the signal from the first input circuitry, measure frequency deviation rates, and produce a trigger event in real-time when each frequency deviation rate of the signal violates a predefined pattern, wherein the trigger event includes at least one of a trigger signal or a timestamp.