US 7,110,898 B2 · Method for digitally acquiring and compensating signals

Abstract

A method of data acquisition for a digital instrument having a bandwidth. The method includes receiving a signal and associated trigger. Using that trigger, a plurality of signal values is sampled at multiple time intervals to create an acquisition record representing a continuous fractional segment of the signal. The plurality of samples meets the Nyquist requirement for the bandwidth but is in error according to at least one known error mechanism. The acquisition record is then processed with DSP techniques to produce a compensated acquisition record corrected for the at least one known error mechanism. Each associated compensated acquisition record is incorporated into a result acquisition record as a segment thereof corresponding to a continuous fractional segment of the signal whose signal values were sampled in an associated instance. An additional signal and additional associated trigger are received. The above steps are then repeated for the additional signal and additional associated trigger.

Claims40

Dependent claims

A method of data acquisition from a signal by a digital instrument having a bandwidth, comprising:

(a) receiving a signal and associated trigger;
(b) based on the associated trigger, sampling at multiple time intervals a plurality of signal values to create an acquisition record representing continuous fractional segment of the signal, the plurality of samples meeting Nyquist requirement for the bandwidth but in error according to at least one known error mechanism, and the plurality of samples being located time relative to the associated trigger;
(c) subsequent to step (b), processing acquisition record with DSP techniques to produce compensated acquisition record corrected for the at least one known error mechanism;
(d) repeating sequenced pairs steps (b) and (c) for a different continuous fractional segment of the signal at least once;
(e) subsequent each instance of step (d), incorporating associated compensated acquisition record into resultant acquisition record as segment thereof corresponding to continuous fractional segment of signal whose signal values were sampled in associated instance of step (b);
(f) receiving additional signal and additional associated trigger;
and
repeating steps (b) thru (e) for additional signal and additional associated trigger.

5 more elements

A computer readable memory device embodying a computer program of instructions executable by the computer for data acquisition from a signal by a digital instrument having a bandwidth, the instructions comprising:

(a) receiving a signal and associated trigger;
(b) based on the associated trigger, sampling at multiple time intervals a plurality of signal values to create an acquisition record representing continuous fractional segment of the signal, the plurality of samples meeting Nyquist requirement for the bandwidth but in error according to at least one known error mechanism, and the plurality of samples being located time relative to the associated trigger;
(c) subsequent to step (b), processing acquisition record with DSP techniques to produce compensated acquisition record corrected for the at least one known error mechanism;
(d) repeating sequenced pairs steps (b) and (c) at least one time;
(e) subsequent each instance of step (d), incorporating associated compensated acquisition record into resultant acquisition record as segment thereof corresponding to continuous fractional segment of signal whose signal values were sampled in associated instance of step (b);
(f) receiving additional signal and additional associated trigger, wherein the acquisition records of step (b) and the compensated acquisition records of step (c) are consecutive and adjacent continuous fractional segments of the resultant acquisition record of step (e);
and
repeating steps (b) thru (e) for additional signal and additional associated trigger.

5 more elements

(a) receiving a signal and associated trigger;
(b) based on the associated trigger, sampling at multiple time intervals a plurality of signal values to create an acquisition record representing continuous fractional segment of the signal, the plurality of samples meeting Nyquist requirement for the bandwidth but in error according to at least one known error mechanism, and the plurality of samples being located time relative to the associated trigger;
(c) subsequent to step (b), processing acquisition record with DSP techniques to produce compensated acquisition record corrected for the at least one known error mechanism;
(d) repeating sequenced pairs steps (b) and (c) at least one time;
(e) subsequent each instance of step (d), incorporating associated compensated acquisition record into resultant acquisition record as segment thereof corresponding to continuous fractional segment of signal whose signal values were sampled in associated instance of step (b);
(f) receiving additional signal and additional associated trigger, wherein the acquisition records of step (b) and the compensated acquisition records of step (c) are non-adjacent continuous fractional segments of the resultant acquisition record of step (e);
and
repeating steps (b) thru (e) for additional signal and additional associated trigger.

5 more elements

(a) receiving a signal and associated trigger;
(b) based on the associated trigger, sampling at multiple time intervals a plurality of signal values to create an acquisition record representing continuous fractional segment of the signal, the plurality of samples meeting Nyquist requirement for the bandwidth but in error according to at least one known error mechanism, and the plurality of samples being located time relative to the associated trigger;
(c) subsequent to step (b), processing acquisition record with DSP techniques to produce compensated acquisition record corrected for the at least one known error mechanism;
(d) repeating sequenced pairs steps (b) and (c) at least one time;
(e) subsequent each instance of step (d), incorporating associated compensated acquisition record into resultant acquisition record as segment thereof corresponding to continuous fractional segment of signal whose signal values were sampled in associated instance of step (b);
(f) receiving additional signal and additional associated trigger;
repeating steps (b) thru (e) for additional signal and additional associated trigger;
receiving a second additional signal and a second additional associated trigger, wherein the second additional associated trigger is the same as the additional associated trigger;
and
repeating steps (b) thru (e) for the second additional signal.

7 more elements

Dependencies are inferred from the claim text.

Method for digitally acquiring and compensating signals

Life of this patent

Method for digitally acquiring and compensating signals

Life of this patent

Abstract

Claims40