Lecroy Corporation

Stephen Mark Sekel

Julie A Campbell

Lawrence W Jacobs

Stanley Joseph Sula

Peter James Pupalaikis

A method and apparatus for generating one or more transfer functions for converting waveforms. The method comprises the steps of determining a system description, representative of a circuit, comprising a plurality of system components, each system component comprising at least one component characteristic, the system description further comprising at least one measurement node and at least one output node, each of the at least one measurement nodes representative of a waveform digitizing location in the circuit. One or more transfer functions are determined for converting a waveform from one or more of the at least one measurement nodes to a waveform at one or more of the at least one output nodes. The generated transfer functions are then stored in a computer readable medium.

Virtual probing

A modular active test probe and removable tip module therefor. Within the scope of the invention, there is a probe tip module comprising a first probe tip adapted for probing a circuit under test to receive a signal therefrom. The probe tip module includes an amplifier having a first input solidly connected to the probe tip, an output connected to an output connector, and a housing for supporting the probe tip, the amplifier, and the output connector. A probe body is cooperatively adapted with the housing for repeatably removably receiving at least the output connector.

Modular active test probe and removable tip module therefor

A self-calibrating test probe system that does not require probing head removal and replacement for calibration or may self-calibration is described. Using this system, the test probe and/or the entire system (including a testing instrument) may be calibrated or may self-calibrate while the probing head remains connected to an electrical component under test. A self-calibrating electrical testing probe includes a cable or signal path having a probing head at a first end and a connector at a second end. Calibration circuitry is preferably at least partially located in said test probe. The calibration circuitry preferably includes switch technology. The switch technology may be at least partially located in said probing head.

Self-calibrating electrical test probe calibratable while connected to an electrical component under test

A cartridge system includes a main probing head body with electronics positioned therein. Further, the cartridge system includes a probing tip cartridge having a probing tip. A minimally inductive electrical contact mechanism electrically couples the electronics to the probing tip when the probing tip cartridge is in mating relationship with the main probing head body. The types may be, for example, a pointed tip, a socket tip, or a grabber tip. In one preferred embodiment the probing tip cartridge further includes at least one foot.

Cartridge system for a probing head for an electrical test probe

A self-calibrating test probe system of the present invention does not require probing head removal and replacement. Using the system of the present invention, the test probe and/or the entire system (including a testing instrument) may be calibrated or may self-calibrate while the probing head remains connected to an electrical component under test. The self-calibrating electrical testing probe system includes calibration circuitry including at least one input resistor, at least one relay, and at least one known calibration reference signal. If the test probe is an active test probe, the calibration circuitry may also include at least one amplifier. Each relay has a first position that provides signal access to a testing signal from an electrical component under test and a second position that provides signal access to the known calibration reference signal. Using the present invention, the error of the test probe and/or system is determined and compensated. Exemplary methods by which error compensation may be provided includes, for example, amplifying the testing signal, creating a correction table of correction values and adding an appropriate value from the correction table, or mathematically compensating.

Self-calibrating electrical test probe

A cartridge system includes a main probing head body with electronics positioned therein. Further, the cartridge system includes a probing tip cartridge having a probing tip. An electrical contact mechanism electrically couples the electronics to the probing tip when the probing tip cartridge is in mating relationship with the main probing head body. The types may be, for example, a pointed tip, a socket tip, or a grabber tip.

The automatic probe identification system of the present invention automatically identifies an electrical test probe as being associated with a particular channel. Specifically, an automatic probe identification system of the present invention includes a testing instrument and at least one test probe. The testing instrument preferably has at least one input channel, each input channel being visually represented by a unique channel identification such as a colored trace. The test probe has a probe identifier such as a full-spectrum LED for selectively visually representing a unique probe channel identification. The probe identifier automatically visually represents a unique probe channel identification corresponding to the unique channel identification of the input channel to which it is coupled. An additional benefit of this system is that the probe identifier used in one preferred embodiment of the test probe provides additional illumination for shadowed or dark places.

Growing community of inventors

Camas, WA, United States of America

Stephen Mark Sekel