Circadiant Systems, Inc.

Other

William Joseph Thompson

John Sargent French

Jorge Eduardo Franke

Sheldon Louis Sun

Rajesh Dighde

Ernest Eisenhardt Bergmann

Ian Malcolm Adam

Darren Leonard Winslow

In accordance with illustrative embodiments, methods and apparati, which determine jitter are described. In one example embodiment, a method includes receiving a signal, wherein the signal comprises a first data pattern which was generated at a first bit rate. The method also includes sampling the signal at a second bit rate to generate a second data pattern. The period of the second bit rate is different from the period of the first bit rate. The method also includes comparing the first data pattern and the second data pattern to determine differences between the first data pattern and the second data pattern. Furthermore, the method includes determining jitter in the signal according to the differences between the first data pattern and the data second data pattern. In other embodiments, by using two different bit rates to determine jitter, jitter can be determined in communication systems in a convenient and cost effective manner.

Method of determining jitter and apparatus for determining jitter

A method of self-testing includes transmitting a plurality of self-test signals and receiving the plurality of self-test signals. In addition, the method includes storing the received self-test signal in a first database; and comparing the received self-test signal with data from a second database. An self-testing apparatus and a method of for assuring substantially continued calibrated function of a testing device.

Method and apparatus for self-testing of test equipment

A testing apparatus for testing optical components includes an optical transmitter, an optical attenuator, an optical power meter and an optical receiver which are substantially rigidly coupled in a fixed relation to each other within a single housing. The system permits the common control of all the optical components such that calibration, testing and troubleshooting may be performed using a common user interface. The testing apparatus is unitary, compact and portable, and is a much more robust testing apparatus than conventional schemes.

Unitary testing apparatus for performing bit error rate measurements on optical components

A system and method for bit error rate testing optical components comprises providing an optical testing unit, which measures a bit error rate of an optical device under test (DUT) over an operating range of the DUT. The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.

Automated system and method for optical measurement and testing

An error analysis tester for an optical component includes an optical transmitter, an optical attenuator, a port, a receiver, a processor and a graphical display. The optical transmitter and optical attenuator produce a test signal at a plurality of selected optical power levels. The port is configured to output the test signal to the optical component and to receive a version of the test signal from the optical component. The receiver determines errors in the received version of the test signal. The processor determines data points of a function associated with an error rate at each of the selected power levels and a line corresponding to the data points. The graphical display produces a visual plot of the data points and the corresponding line.

Error function analysis of optical components

A system and method for testing the sensitivity of optical components comprises providing an optical testing unit which measures the sensitivity of an optical device under test (DUT). The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.

Automated system and method for determining the sensitivity of optical components

A device and method that performs error analysis of an optical component. An optical transmitter transmits a test signal at a plurality of selected optical power levels. A port outputs the test signal to the optical component, and then receives a version of the test signal from the optical component. A receiver determines errors in the received version of the test signal. A processor determines an error rate at each of the selected optical power levels based on the determined errors, and also determines an uncertainty range for each determined error rate. An interface provides indication of the determined error rates in relation to the determined uncertainty ranges.

A modular housing device includes a modular housing having a first side and a second side, at least one component disposed with said modular housing. The modular housing device further includes a bracket disposed on the second side.

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Kempton, PA, United States of America

William Joseph Thompson