Realtime power mask trigger
First Claim
1. A realtime power mask trigger comprising:
- a defined frequency band within a frequency spectrum for an input signal; and
a specified power level for the defined frequency band so that when an integrated power for the input signal over the frequency band violates the specified power level, a trigger signal is generated to acquire data from the input signal.
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Abstract
A realtime power mask trigger generator for an instrument that acquires data in response to a trigger signal integrates power amplitudes over a defined bandwidth within a frequency spectrum for an input signal to produce an average signal power, and compares the average signal power with a specified reference power level for the defined bandwidth. Violation of the reference power level by the average signal power generates the trigger signal for acquiring data from the input signal about the trigger event by the instrument. The frequency spectrum may be divided into more than one defined frequency bandwidth, and each defined frequency bandwidth may have its own specified reference power level. The defined frequency bandwidths and associated reference power levels define a realtime power mask trigger.
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Citations
6 Claims
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1. A realtime power mask trigger comprising:
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a defined frequency band within a frequency spectrum for an input signal; and
a specified power level for the defined frequency band so that when an integrated power for the input signal over the frequency band violates the specified power level, a trigger signal is generated to acquire data from the input signal.
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2. A realtime power mask trigger generator comprising:
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means for converting a segment of time domain data representing an input signal into a frequency spectrum having a plurality of frequency bins, each frequency bin having a corresponding power amplitude;
means for integrating the power amplitudes over a defined bandwidth of the frequency bins to produce an average signal power for the defined bandwidth; and
means for comparing the average signal power with a specified power level for the defined bandwidth to generate a trigger signal when the average signal power violates the specified power level. - View Dependent Claims (3, 4, 5)
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6. A method of acquiring data in response to a realtime power mask trigger comprising the steps of:
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converting a segment of time domain data representing an input signal to a frequency spectrum having a plurality of frequency bins, each frequency bin having a power amplitude;
integrating the power amplitude over a defined bandwidth of the frequency bins to produce an average signal power for the defined bandwidth; and
comparing the average signal power with a specified power level to generate a trigger when the average signal power violates the specified power level.
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Specification