Abstract: A novel graphical user interface for test device applications which permits simultaneous display of system status and alarm information while supporting graphically based test device I/O and configuration. The present invention also includes a novel graphical representation I/O scheme whereby test device configuration is accomplished through intuitive manipulation of an image of the test device. The present invention also includes embedded menuing features and a "one button down" user input section which facilitates ease of operation of the system. The present invention may be advantageously applied to a test device designed to extract and process telecommunications signals such as DS1, DS3, SONET, and ATM communication protocols.

Abstract: A novel high speed telecommunications testing apparatus and method which utilizes field programmable gate arrays to produce dynamic test modules for DS1, DS3, SONET and ATM signals interconnected by a high speed switching fabric. The high speed switch permits the direct exchange of signals from one test module to another thereby permitting simultaneous testing of different communications line protocols and further provides for multiple tests on a single data stream. Individual line interfaces are provided for DS1, DS3, and SONET lines which terminate and frame incoming and outgoing signals. Data exchange between modules in accomplished through the high speed switch fabric.

Abstract: A novel graphical user interface for test device applications which permits simultaneous display of system status and alarm information while supporting graphically based test device I/O and configuration. The present invention also includes a novel graphical representation I/O scheme whereby test device configuration is accomplished through intuitive manipulation of an image of the test device. The present invention also includes embedded menuing features and a "one button down" user input section which facilitates ease of operation of the system. The present invention may be advantageously applied to a test device designed to extract and process telecommunications signals such as DS1, DS3, SONET, and ATM communication protocols.

Abstract: A novel high speed telecommunications testing apparatus and method which utilizes field programmable gate arrays to produce dynamic test modules for DS1, DS3, SONET and ATM signals interconnected by a high speed switching fabric. The high speed switch permits the direct exchange of signals from one test module to another thereby permitting simultaneous testing of different communications line protocols and further provides for multiple tests on a single data stream. Individual line interfaces are provided for DS1, DS3, and SONET lines which terminate and frame incoming and outgoing signals. Data exchange between modules in accomplished through the high speed switch fabric.

Abstract: Electromagnetic radiation is converted to usable power in the form of electrical current by means of a plurality of transducing cavities having a wall structure that is inclined inwardly to receive impinging radiation and includes potential barrier strips each having different conduction electron densities which are also different from the conduction electron density of the material constituting the wall structure of each cavity; each potential barrier strip extends from the mouth of the cavity to the base thereof and, at the mouth, is connected to a conductor having a preselected conduction electron density whereby radiation impinging on a cavity will induce current flow which will be rectified across the potential barriers; the cavities are connected in parallel so that current can be delivered to a load connected across the conductors.