Time shifting signal acquisition probe system
First Claim
1. A time shifting signal acquisition probe system comprisinga signal acquisition probe having a memory therein containing a time delay value representative of the propagation time delay of an electrical signal passing through the signal acquisition probe;
- a measurement test instrument receiving the electrical signal from the signal acquisition probe generating digital samples of the electrical signal in an acquisition system and producing a waveform record in response to a trigger signal; and
a communications bus coupled between the signal acquisition probe and the measurement test instrument for coupling the signal acquisition probe time delay value from the signal acquisition probe to the measurement test instrument wherein processing circuitry in the measurement test instrument time shifts the waveform record of the electrical signal relative to the trigger signal by the amount of the signal acquisition probe time delay value.
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Accused Products
Abstract
A time shifting signal acquisition probe system has a signal acquisition probe having a memory containing a time delay constant representative of the propagation time delay of an electrical signal passing through the signal acquisition probe. A measurement test instrument receives the electrical signal from the signal acquisition probe and generating digital samples of the electrical signal in an acquisition system in response to a trigger signal and producing a waveform record. A communications bus coupled between the signal acquisition probe and the measurement test instrument couples the signal acquisition probe time delay constant from the signal acquisition probe to the measurement test instrument wherein processing circuitry in the measurement test instrument time shifts the waveform record of the electrical signal relative to the trigger signal by the amount of the signal acquisition probe time delay constant.
18 Citations
22 Claims
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1. A time shifting signal acquisition probe system comprising
a signal acquisition probe having a memory therein containing a time delay value representative of the propagation time delay of an electrical signal passing through the signal acquisition probe; -
a measurement test instrument receiving the electrical signal from the signal acquisition probe generating digital samples of the electrical signal in an acquisition system and producing a waveform record in response to a trigger signal; and a communications bus coupled between the signal acquisition probe and the measurement test instrument for coupling the signal acquisition probe time delay value from the signal acquisition probe to the measurement test instrument wherein processing circuitry in the measurement test instrument time shifts the waveform record of the electrical signal relative to the trigger signal by the amount of the signal acquisition probe time delay value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A time shifting signal acquisition probe system comprising
a signal acquisition probe having a memory therein containing a time delay value representative of the propagation time delay of an electrical signal passing through the signal acquisition probe; -
a measurement test instrument receiving the electrical signal from the signal acquisition probe generating digital samples of the electrical signal in an acquisition system and producing a waveform record in response to a trigger signal; and a communications bus coupling the signal acquisition probe time delay value to the measurement test instrument wherein processing circuitry in the measurement test instrument time shifts a portion of the waveform record relative to the trigger signal by the amount of the signal acquisition probe time delay value. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A time shifting signal acquisition module system comprising
a signal acquisition module having a memory therein containing time delay values representative of the propagation time delays of electrical signals in the signal acquisition module with one of the electrical signal being received from a device under test and repetitively sampled in response to a strobe signal to generate electrical samples of the electrical signal; -
a measurement test instrument receiving the electrical samples of the electrical signal and generating digital samples of the electrical samples to produce a waveform record; and a communications bus coupled between the signal acquisition module and the measurement test instrument for coupling the signal acquisition module time delay values from the signal acquisition module to the measurement test instrument wherein processing circuitry in the measurement test instrument time shifts the electrical samples of the waveform record by an amount of the signal acquisition module time delay values. - View Dependent Claims (21, 22)
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Specification