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US 7,398,175 B2Granted
Method and apparatus providing multiple channel multiple instrument triggering
AssigneeTektronix, Inc.
InventorsQue Thuy Tran, John C. De Lacy
Life of this patent
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Abstract
A system, method and apparatus for triggering a plurality of test and measurement instruments in a substantially simultaneous manner logically combines a trigger enable signal provided by each of a plurality of signal processing devices to produce a combined trigger signal. The combined trigger signal then triggers each of the plurality of signal Processing devices.
Claims7
A system for triggering a plurality of test and measurement instruments substantially simultaneously, comprising:
- a first test and measurement instrument having an input for receiving a first signal under test, an output for developing a first trigger enable signal, and a first external trigger input;
- a second test and measurement instrument having an input for receiving a second signal under test, an output for developing a second trigger enable signal, and a second external trigger input;
- and
- circuitry for logically combining said first and second trigger enable signals to generate a combined trigger signal;
- said combined trigger signal being applied to the first and second external trigger inputs;
- and
- said first and second test and measurement instruments acquiring data samples of said first and second signals under test in response to said combined trigger signal.
4 more elements
A method of substantially simultaneously triggering a plurality of acquisition devices comprising:
- logically combining a trigger enable signal provided by each of the acquisition devices, each acquisition device receiving a different signal under test, to produce a combined trigger signal, said combined trigger signal enabling substantially simultaneous acquisition of data samples from the different signals under test by said devices;
- wherein each trigger enable signal is generated in response to a determination of an occurrence of a predefined triggering event in the respective signal under test;
- each trigger enable signal produced by the respective acquisition device is only asserted when the device is ready to acquire the respective signal under test;
- at least one of said acquisition devices logically combines said combined triggering signal with a respective triggering signal to control the acquisition of the respective signal under test.
1 more element
Dependencies are inferred from the claim text.