Multiconductor Cable Patents (Class 324/539)
  • Publication number: 20040066202
    Abstract: A tester for testing multiconductor cable having a first tester is connectable to a first end of the multiconductor cable. The first tester produces one or more test signals individually on each conductor of the cable. A second tester is connectable to the second end of the cable at a remote location. The second tester monitors each of the plurality of separate conductors to detect the test signals produced by the first tester. Preferably, a first wireless transceiver is provided for the first tester that wirelessly transmits control signals to automatically coordinate testing procedure control. A second wireless transceiver joined to the second tester wirelessly transmits test result data.
    Type: Application
    Filed: October 8, 2002
    Publication date: April 8, 2004
    Inventors: Fernando J. Pereira, Raymond U. Huot
  • Publication number: 20040056666
    Abstract: An interface for a bus test instrument is readily adaptable for testing a wide range of bus types. The interface includes a pair of transmit lines and a pair of receive lines. A transmitting circuit is adaptable for transmitting either single-ended or differential signals over the transmit lines, and at least one receiving circuit is adaptable for receiving either single-ended or differential signals from either the receive lines or the transmit lines. The flexible interface allows the testing of single-ended and differential busses, as well as busses that support both unidirectional and bidirectional communication.
    Type: Application
    Filed: December 12, 2002
    Publication date: March 25, 2004
    Inventor: Tushar K. Gohel
  • Patent number: 6707305
    Abstract: The tone generator uses a highly accurate frequency signal to generate an accurate and stable tone signal. A cadence pattern may be used to output the tone signal onto a test cable in an easily distinguishable pattern. The tone signal may be selectively output at an in-band band frequency or an out-band frequency. A corresponding tone probe may be used to detect the tone signal. The tone probe uses a high-Q bandpass filter to reject all but the expected frequency of the tone signal. The signal passing the bandpass filter is proportional to the detected tone signal. The tone probe generates an audio signal unrelated to the frequency of the tone signal. The audio signal is modulated by the signal from the bandpass filter, and then broadcast through a speaker. Accordingly, the tone probe provides an audible sound proportional to the strength of the tone signal, but is unrelated in frequency.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 16, 2004
    Assignee: Psiber Data Systems Inc.
    Inventors: Darrell J. Johnson, John C. McCosh
  • Publication number: 20040027136
    Abstract: A testing circuit for use in an inductive coupling system to test communication devices is disclosed. The testing circuit comprises at least an output transformer having a frequency response for providing a signal having electrical properties compatible with a communication device to be tested; and, a spectral shaping circuit having an input port for receiving a test signal and an output port for providing a shaped test signal, the shaped test signal for being provided via the at least an output transformer to a device under test, the spectral shaping circuit for partitioning the test signal in dependence upon pre-determined spectral ranges thereof and relating to a frequency response of at least an output transformer for shaping the frequency characteristics of the received signal in approximately inverse proportion to the frequency response of the at least an output transformer.
    Type: Application
    Filed: September 16, 2002
    Publication date: February 12, 2004
    Inventor: Dragan Golo
  • Patent number: 6691262
    Abstract: A cable line quality evaluating method for evaluating a quality of a cable line for transmitting a digital modulation signal in a bidirectional manner comprises the steps of extracting a noise signal of an upstream line from one of a cable line connection point for evaluating a head end of the cable line evaluated in the quantity and the cable line evaluated in the quantity and a connection point between a tap-off and the cable line evaluated in the quality, generating a pseudo random signal, modulating a carrier signal of its predetermined frequency by means of the pseudo random signal, and then outputting the modulated signal as a test carrier, outputting an output signal obtained by adding the noise signal of the upstream line and the test carrier, selectively receiving the signal of its predetermined frequency from the output signal, and modulating the selectively received signal, and comparing the modulated signal with the pseudo random signal in bits, and then measuring a bit error rate.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: February 10, 2004
    Assignee: Anritsu Corporation
    Inventor: Hiroshi Itahara
  • Publication number: 20040021463
    Abstract: A magnetic sensor has a monotonic response to high-frequency magnetic strengths in a frequency range up to superhigh frequencies. The magnetic sensor includes a shielded loop coil having a triplate stripline structure. The shielded loop coil has one-turn looped ground patterns formed respectively in a first layer and a fifth layer and connected parallel to each other by a via, and has an inductance L. The one-turn looped ground patterns have end electrodes facing each other across gaps, one of the end electrodes including the via, providing a combined capacitor operable at high frequencies and having a capacitance C. The product L×C of the inductance L and the capacitance C is 2.5×10−20 or less and the maximum outer circumference length of the one-turn looped ground lines is 50 [mm] or less.
    Type: Application
    Filed: January 31, 2003
    Publication date: February 5, 2004
    Applicant: RYOWA ELECTRONICS CO., LTD
    Inventors: Yasunori Miyazawa, Katsuji Kaminishi, Masahiro Yamaguchi, Kenichi Arai
  • Publication number: 20040000916
    Abstract: To provide protection for power supplies in which a plurality of paralleled identical DC power cables are provided between a source and a load, one aspect of the present invention provides a method for detecting conditions in parallel DC power cables. The method includes supplying current from a power supply to each of a plurality of DC power cables, determining an average current per cable flowing in the plurality of parallel DC power cables, comparing currents in each of the DC power cables with the determined average current, and signaling the existence of a condition in response to the comparison.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: David C. Halstead, Michael R. Gilbert
  • Patent number: 6661237
    Abstract: A smart automatic wiring analyzer having at least two modular wiring analyzer boxes stacked together is provided. The modular wiring analyzer boxes has a plurality of testing pins connected to a plurality of interface pins of at least a connector built in the smart automatic wiring analyzer. Thereby, a direct connection to the cable under test can be established without introducing an external interface fixture. A wire list of the connection between the test pins and the interface pins are pre-stored in a reference file. When a cable is to be tested, the wiring pattern of the cable is obtained by attaching a known-good cable to the connector. A test program (sequence) is generated according to the wiring pattern of the cable and the wire list. The cable can thus be tested.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: December 9, 2003
    Assignee: Northrop Grumman Corporation
    Inventor: Stanley Teich
  • Patent number: 6646447
    Abstract: There is provided a method for identifying one of a plurality of neutral wires of a power transmission cable. The method comprises (a) applying a signal to a selected neutral wire, at a first point on the power transmission cable, (b) sensing a relative magnitude of the signal on each of the plurality of neutral wires at a second point on the power transmission cable that is remote from the first point, and (c) identifying the selected neutral wire from the relative magnitudes. There is also provided a system for identifying one of a plurality of neutral wires of a power transmission cable.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: November 11, 2003
    Assignee: Ambient Corporation
    Inventors: Yehuda Cern, George Kaplun
  • Patent number: 6636048
    Abstract: The present invention provides an apparatus for using time domain analysis of NEXT, Return Loss and the like, in conjunction with the application of time or distance referenced limits to verify and determine compliance of the performance requirements of connections in a typical link. Time domain analysis of NEXT, Return Loss data and the like suitably provides the performance characteristics of a link as a function of time or distance. When coupled with time or distance performance curves for connections, it can be determined if the transmission fault is at a connection or in the cable. The time limit curves for connections can be generated based on the frequency domain performance requirements for connecting hardware of a specific level of performance. The connection time limit curves thus allows one to determine if the connection is within performance standards, allowing improved isolation of the fault condition.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: October 21, 2003
    Assignee: Microbest, Inc.
    Inventors: James R. Sciacero, James G. Tonti
  • Patent number: 6621276
    Abstract: A cable termination assembly for testing the quality of insulation surrounding a power cable has one termination design to fit a large range of cable constructions, does not require different insulation shield cut-back distances, provides a secure electrical connection, and is environmentally friendly. A cable grip assembly is attached to an exposed conductor. The bottom outer surface of an inner cup is attached to the inner bottom surface of an outer cup wherein the inner cup is fully contained in the outer cup. When the two cups are attached, the cable grip assembly is mateably connected into the top of the inner cup and the outer cup is filled with a high dielectric strength liquid covering the inner cup and the cable grip assembly. After the high dielectric strength liquid has been added, a voltage is applied and the partial voltage discharge of the power cable is measured.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: September 16, 2003
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Yingli Wen, André Pion, Nathan J. Kelly, Claude Hébert
  • Patent number: 6611579
    Abstract: A computer-executable method for diagnosing trouble causes in telephone cable segments when trouble data are available only for entire cables is presented. This method diagnoses problems in the components of processes when the component location of process problems is not known. It gives a statistical relationship between component attributes and process problem rates, to facilitate assessment and improvement of policies about the process. This method may be used for diagnosing systematic problems in segments of telephone cable connections of given central offices.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: August 26, 2003
    Assignee: Verizon Laboratories Inc.
    Inventors: James Howard Drew, Andrew Louis Betz, III
  • Patent number: 6611147
    Abstract: A test apparatus for performing line testing of cable and networks. In one embodiment, the test apparatus includes a housing configured to electrically connect with an adapter module while minimizing bends in the electrical connection. The housing and adapter module include mating connectors configured to provide a direct connection between the adapter module and the housing. One embodiment includes a guide feature to ease the insertion of the adapter module into the housing. In another embodiment, the adapter module is configured to form a continuous surface with the housing upon its insertion.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: August 26, 2003
    Assignee: IDEAL Industries, Inc.
    Inventors: Charles Michael White, William L. Redman, S. Stanley Mintz, Kwok Lo, Jarek Kanikula, Mark William Borneman
  • Patent number: 6608487
    Abstract: A contact-connecting device connects more than two indicator fibers in an electrically conducting manner to create a conducting connection of the indicator fibers at the end of a safety-monitored synthetic fiber rope made from electrically insulating synthetic fibers and the electrically conducting indicator fibers. A fastener fixes the contact-connecting device and the indicator fibers relative to one another, which creates a low-cost and reliable contact-connection.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: August 19, 2003
    Assignee: Inventio AG
    Inventor: Claudio De Angelis
  • Publication number: 20030151412
    Abstract: A partial discharge detection test link (20) and system detect partial discharge of a power cable at a power cable accessory (6). The power cable accessory includes a first accessory component and a second accessory component connected to each other. The partial discharge detection test link (20) is a permanent or temporary substitute for a conventional service link, connects directly across the power cable accessory and includes a conductor member (22) and a partial discharge sensor (24). The conductor member (22) has an electrically conductive element (26) and an insulation (28) surrounding and extending along the electrically conductive element. The electrically conductive element (26) is electrically connected directly between the first and second accessory components.
    Type: Application
    Filed: March 17, 2003
    Publication date: August 14, 2003
    Inventors: Brian Gregory, Andrew Leslie Barclay
  • Publication number: 20030146765
    Abstract: A power supply subsystem for use in a local area network (LAN) includes a direct current (DC) power source, which supplies DC power to at least one of the nodes via at least one of the wire pairs used in communication cabling of the LAN, substantially without interfering with data communications. A signal generator generates a periodic time-varying signal and couples the time-varying signal into the at least one of the wire pairs. A control unit senses a time-varying voltage on the at least one of the wire pairs due to the time-varying signal generated by the signal generator, and responsive to the sensed time-varying voltage, controls the DC power supplied to the at least one of the nodes by the DC power source.
    Type: Application
    Filed: October 24, 2002
    Publication date: August 7, 2003
    Applicant: POWERDSINE LTD.
    Inventors: Yair Darshan, Alon Ferentz, Dror Korcheraz
  • Publication number: 20030141878
    Abstract: A housing holder is provided with detectors to be inserted into communication grooves of a connector. The detectors are electrically connected through a lead wire to a test device. The test device is also connected to an adapter electrically connected to a rear end of a probe on each terminal. During a continuity test, incomplete insertion or dropout of a terminal, and a short circuit between terminals are detected by comparing a circuitry formed by a contact of each terminal with the detector and probe with a circuitry stored in the memory of the test device beforehand.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 31, 2003
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tomohiro Shinzou, Takuya Nojima
  • Publication number: 20030132757
    Abstract: A cable-testing arrangement for rapidly testing a plurality of telecommunications cables includes a cable-testing adapter by which test signals can be directed along the plurality of cables from a patch panel at once. A technician completes the tests by making appropriate measurements at the terminations of the cables without having to return to the patch panel until all measurements have been taken.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 17, 2003
    Inventor: Javier Fernandez
  • Patent number: 6593750
    Abstract: In circuit tester apparatus using one or more carrier elements, each carrier element having one or more first electrical connectors, the combination comprising one or more base sections, one or more second electrical connectors carried by the section or sections and positioned to interfit the one or more first electrical connectors when the element or elements are assembled to the section or sections, at least two of the multiple base sections located for bridging thereof by at least one carrier element. Carrier elements may comprise adapter cards.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: July 15, 2003
    Assignee: Eubanks Engineering Co.
    Inventors: Kenneth N. Rockwell, Roy G. Brant
  • Patent number: 6578256
    Abstract: A sub-harness and a sub-harness manufacturing apparatus including a pair of connecting units each having a wire connecting portion, made of metal, vertically movable so as to connect one end of one of a plurality of wires composing a sub-harness to one of a plurality of terminals having a sheathing clamping portion and being arranged in a wire feeding direction; and a pair of transferring devices to transfer the terminals in a direction perpendicular to the wire feeding direction so as to position each one of the plurality of terminals under each wire connecting portion. A clamping punch portion is provided on the wire connecting portion of each of the pair of connecting units for clamping the sheathing clamping portion and a conductivity testing device is arranged between the clamping punch portions of the pair of connecting units for judging whether the one of the plurality of wires having terminals on the respective ends thereof is good or bad.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: June 17, 2003
    Assignee: Yazaki Corporation
    Inventor: Kazuhiko Takada
  • Publication number: 20030094955
    Abstract: The invention relates to a device for transmitting electric current between two components, which twist in relation to one another, of a steering device for motor vehicles. The inventive device comprises a rotor which is assigned to the steering wheel and which can turn together with the same, a stator which is assigned to a stationary subassembly of the motor vehicle, and at least one flexible printed circuit board which runs from the rotor to the stator. When the steering wheel is turned, said printed circuit board can, according to the direction of turning, be wound onto a winding element or unwound therefrom. In addition, the printed circuit board comprises a flat flexible support on which the conductor tracks run from the stator to the rotor. According to the invention, each opposing surface (28, 29) of the flexible support (30) is provided with conductor tracks (40a, 40b) running from the stator to the rotor.
    Type: Application
    Filed: November 15, 2002
    Publication date: May 22, 2003
    Inventor: Helmut Bonn
  • Patent number: 6563322
    Abstract: The present invention relates to an apparatus and a method for detecting an open circuit fault condition in a differential signal, and generating a fault detection signal. An open circuit fault condition is detected by employing weak current sources to pull the differential signal paths outside the valid ac common-mode range and toward the supply rails. If both signal paths can be pulled within a predetermined proximity to the supply rails by their respective weak current sources, an open condition fault is defined to exist and a fault detection signal is generated. The fault detection signal can be used by another device to report the fault condition.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: May 13, 2003
    Assignee: National Semiconductor Corporation
    Inventor: Douglas Michael Hannan
  • Publication number: 20030057960
    Abstract: A conductivity testing method for a sub-harness and a sub-harness manufacturing apparatus are provided, which sub-harness manufacturing apparatus includes: a pair of connecting units each having a wire connecting portion, made of metal, vertically movable so as to connect one end of one or wires composing a sub-harness to one of terminals having a sheathing clamping portion and being arranged in a wire feeding direction; and a pair of transferring devices to transfer the terminals in a direction perpendicular to the wire feeding direction so as to position each one of the terminals under each wire connecting portions, wherein a clamping punch portion to clamp the sheathing clamping portion is provided on the wire connecting portion of each of the pair of connecting units and a conductivity testing device to judge the one, having terminals on the respective ends thereof, of the wires being good or bad is arranged between the clamping punch portions of the pair of connecting units.
    Type: Application
    Filed: October 8, 2002
    Publication date: March 27, 2003
    Applicant: Yazaki Corporation
    Inventor: Kazuhiko Takada
  • Publication number: 20030057959
    Abstract: A smart automatic wiring analyzer comprising at least two modular wiring analyzer boxes stacked together is provided. The modular wiring analyzer boxes has a plurality of testing pins connected to a plurality of interface pins of at least a connector built in the smart automatic wiring analyzer. Thereby, a direct connection to the cable under test can be established without introducing an external interface fixture. A wire list of the connection between the test pins and the interface pins are pre-stored in a reference file. When a cable is to be tested, the wiring pattern of the cable is obtained by attaching a known-good cable to the connector. A test program (sequence) is generated according to the wiring pattern of the cable and the wire list. The cable can thus be tested.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 27, 2003
    Inventor: Stanley Teich
  • Patent number: 6531880
    Abstract: The present invention is a non-invasive cable tester. The cable tester comprises a sensor for detecting an electric field emitted by a live electric cable. The resulting signal from the sensor is then filtered, amplified, and compared to a threshold value to determine the energization status of the electric cable. A meter can be provided to get a reading of the amplified signal that can be compared to a predetermined threshold value. Also, a detector circuit can be provided that includes a comparator in electrical communication with a light-emitting device such as a light-emitting diode. The detector circuit processes the amplified signal and compares it to a predetermined threshold value. If the electric cable is energized, the output of the comparator either causes the light-emitting device to emit light or not emit light, as desired. This enables an operator to determine the status of the electric cable simply by determining whether the light-emitting device is lit.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: March 11, 2003
    Assignee: American Electric Power Company, Inc.
    Inventors: John M. Schneider, James R. Booker, Edward J. Koegler, John D. Mandeville
  • Patent number: 6512378
    Abstract: A network cable tester is connected to a multi-line test coupler, with a plurality of output cables connected in turn to a patch panel. The coupler includes an internal printed circuit board connecting the internal wire pair to an outlet jack for a maintenance free product. A terminator is also connected to the patch panel to selectively test lines by engaging wall outlets etc., with the terminator. With this system it is not necessary to connect the tester to each individual line thereby saving considerable time and expense.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: January 28, 2003
    Inventor: Javier Fernandez
  • Patent number: 6504379
    Abstract: A link cable assembly is provided as an interface between a network cable test instrument and a network to be tested. The link cable assembly includes a link cable that is constructed to minimize cross talk and have long-term high quality reliability. Interchangeable connector personality modules releasably attached to the link cable permit testing networks having different electrical characteristics. Calibration data may be stored within the cable assembly to allow intrinsic “patch cord” return loss to be factored out of network cable measurements.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: January 7, 2003
    Assignee: Fluke Networks, Inc.
    Inventor: Robert J. Jackson
  • Publication number: 20030001588
    Abstract: In circuit tester apparatus using one or more carrier elements, each carrier element having one or more first electrical connectors, the combination comprising one or more base sections, one or more second electrical connectors carried by the section or sections and positioned to interfit the one or more first electrical connectors when the element or elements are assembled to the section or sections, at least two of the multiple base sections located for bridging thereof by at least one carrier element. Carrier elements may comprise adapter cards.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 2, 2003
    Inventors: Kenneth N. Rockwell, Roy G. Brant
  • Publication number: 20020196032
    Abstract: A method and architecture that uses a ground-fault-circuit-interrupter (“GFCI”) proximate the tap to provide fault protection along a Low Power Network drop cable. The solution is single-ended and effective regardless of the input impedance and type of termination equipment, such as an NIU, connected thereto. The GFCI may be incorporated into a single enclosure that comprises a power passing tap and filtering means, such as a low pass filter and a splitter.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 26, 2002
    Inventor: Brent S. Hughes
  • Patent number: 6496014
    Abstract: A probe for a cable tester having a first interface for connection to the cable tester; a second interface, connected to the first interface, for connection to a cable to be tested; and a memory, associated with the probe and accessible by the cable tester, storing configuration data associated with the probe.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: December 17, 2002
    Assignee: Agilent Technologies, Inc.
    Inventor: Ron D. Cook
  • Publication number: 20020186022
    Abstract: A method, system, and recording medium of testing 1394 interface card are disclosed in the present invention. A plurality of ports for the 1394 interface card to be tested are respectively connected to ports of a reference 1394 interface card through cables. One port of the 1394 interface card to be tested and one port of the reference 1394 interface card are in enabled condition and the others are in disabled condition. Only a reference 1394 interface card and two PCI slots are used, the testing process is simplified, and the probability of testing error is decreased.
    Type: Application
    Filed: April 15, 2002
    Publication date: December 12, 2002
    Inventors: Chien-Yi Shih, Chien-Hsu Chen
  • Patent number: 6486677
    Abstract: A conductivity testing method for a sub-harness and a sub-harness manufacturing apparatus are provided, which sub-harness manufacturing apparatus includes: a pair of connecting units each having a wire connecting portion, made of metal, vertically movable so as to connect one end of one of wires composing a sub-harness to one of terminals having a sheathing clamping portion and being arranged in a wire feeding direction; and a pair of transferring units to transfer the terminals in a direction perpendicular to the wire feeding direction so as to position each one of the terminals under each wire connecting portions, wherein a clamping punch portion to clamp the sheathing clamping portion is provided on the wire connecting portion of each of the pair of connecting units and a conductivity testing units to judge the one of the wires having terminals on the respective ends thereof being good or bad is arranged between the clamping punch portions of the pair of connecting units.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: November 26, 2002
    Assignee: Yazaki Corporation
    Inventor: Kazuhiko Takada
  • Publication number: 20020171433
    Abstract: The measuring precision of an electric power measuring apparatus is improved. A voltage measuring apparatus for sheathed power cable comprises; a first conductive member arranged to contact the sheathing material for sheathing a power cable conductor, a second conductive member for forming a capacitance between the ground and itself, a current voltage converting means for conversion into the voltage signal having a waveform proportional to the current signal flowing between the first conductive member and the second conductive member, and a voltage value calculating means for calculating the voltage value applied to the power cable from the voltage signal converted by the current voltage converting means.
    Type: Application
    Filed: October 30, 2001
    Publication date: November 21, 2002
    Inventors: Masahiro Watanabe, Kazuo Kato, Masayuki Tani, Ikurou Masuda
  • Patent number: 6483317
    Abstract: Circuitry for protecting a first electrical system when connected to a second electrical system via a bus which provides a current-carrying signal to the first electrical system and includes a reset signal which is monitored by the second electrical system. The circuitry includes a capacitor connected to the current-carrying signal of the bus. A first switch is electrically connected between a node of the capacitor and a ground point. The first switch is closed when the first electrical system is powered-up and open when the first electrical system is powered down. A second switch is electrically connected between the reset signal of the bus and the ground point. The second switch closes due to the energy accumulated by the capacitor when the first switch is open.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: November 19, 2002
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: William E. Floro, Frank J. Priore
  • Patent number: 6483318
    Abstract: A LAN cable tester circuit is disclosed having measurement end circuit components and shorting end circuit components. The measurement end circuit components are conventional and include a multiplexer having a current source and voltage sensing circuitry electrically coupled thereto. The multiplexer also has a plurality of pairs of associated electrical conductors included in the cable under test coupled thereto. The shorting end circuit components include another multiplexer having the opposite ends of the electrical conductors coupled thereto, and further having a differential voltage amplifier and two current output differential amplifiers electrically coupled thereto. The shorting end circuit components provide for an active short that eliminates the effect of the on-resistance attributable to semiconductor integrated circuit multiplexers.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: November 19, 2002
    Assignee: Ideal Industries, Inc.
    Inventors: Charles Michael White, Barry James Smith
  • Patent number: 6480004
    Abstract: A connector receiving member and a test area are provided in a relatively shiftable manner from an engaged state in which a test area engages in a continuity testable manner to a separated state in which the test area separates from a connector housing. In addition, a drive mechanism is provided for relatively shifting the connector receiving member and the test area in relation to an engaged state and a separated state. The drive mechanism is controlled by a control mechanism. With this mechanism, a connector receiving member and a test area relatively shift to the engaged state upon insertion of the connector housing into the connector receiving member while the connector receiving member and the test area relatively shift to the separated state after a predetermined time period.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: November 12, 2002
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Jo Iwasaki
  • Patent number: 6472884
    Abstract: An adapter circuit system for an electrically powered measuring device with two ports constituting a two-wire interface for connecting a dual-conductor cable capable both of feeding electric power to the measuring device and of transmitting a measuring signal from the measuring device for instance to an evaluation circuit. A second two-wire interface may be provided which permits the connection of a second cable capable of feeding additional electric power to the measuring device via two additional connecting ports. This permits universal operation of measuring devices equipped with the adapter circuit system due to the fact that in the event of increased power consumption by the measuring device, additional electric power can be supplied via the second two-wire interface.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: October 29, 2002
    Inventor: Helmut Brockhaus
  • Patent number: 6469515
    Abstract: A method for determining sources of interference that cause partial discharges in an encapsulated conductor structure of a magnetic resonance apparatus, particularly in a gradient coil. Under the method, a low-frequency high voltage is applied to a conductor, and signals resulting from an adjacent high voltage are measured within a frequency range located in the kHz range, particularly from 40 to 400 kHz. The signals are analyzed in order to determine partial discharges. The conductor is again charged with a low-frequency high voltage and additional signals are measured within a frequency range located in the MHz range, particularly from 10 to 300 MHz. The additional signals are analyzed in order to determine partial discharges.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: October 22, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hossein Borsi, Arthur Kaindl, Stefan Nowak
  • Patent number: 6466885
    Abstract: A cable testing system for testing individual lines of a cable. The cable testing system includes a main unit having an input jack and a plurality of identifying lights connected to the input jack, and at least one remote module including an input jack and an output jack, a power source in communication with the output jack, and a plurality of identifying lights connected to the input jack. Preferably, the output jack of the remote module is configured to receive one end of a multiple line cable and the input jacks of both the main unit and remote module are configured to receive the other end of the multiple line cable. The remote module preferably includes a test signal generator configured to send test signals sequentially along each line of the cable, and includes an identifying signal generator which is configured to send an identifying signal along a line of the cable.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: October 15, 2002
    Assignee: Greenlee Textron Inc.
    Inventor: Garth Miller, Jr.
  • Patent number: 6466041
    Abstract: A method for setting the trigger power of transmitter diodes that transmit data via optical paths allows the transmission power to be adjusted and adapted to the communication distance. The trigger power is determined for the present communication distance on the basis of a test signal before data transmission begins. A circuit arrangement implementing the method includes a driver circuit with a switching device that switches a circuit junction point selectively to a supply voltage or to a constant reference voltage, a voltage-controlled resistor which delivers the driver current and is controlled from the circuit junction point, and a voltage-controlled measuring resistor which delivers a measured current with a fixed relationship to the driver current and is controlled from the circuit junction point. Since the set trigger power can be reduced, the power consumption for data transmission can be reduced considerably.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: October 15, 2002
    Assignees: TEMIC Semiconductor GmbH, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jens Egerer, Johann Hauer, Michael Reinhold, Rainer Rodenheber
  • Patent number: 6466033
    Abstract: An apparatus for verifying port and slot assignments of cable bundles that extend from a telephony filtering device, including Digital Subscriber Line (DSL) infrastructure. The apparatus may have a circuit board that inserts into a vacant slot of a frame of DSL equipment. The circuit board (sometimes called a LC circuit board) provides a connector that provides electrical continuity from a voltage driven indicator to, e.g. a slot-to-slot interface. One lead to the indicator may be held to a high voltage by a voltage source. A remaining lead, or probe input, may be connected to a common ground to cause the indicator to illuminate. Frequently, the common ground circuit closure may occur at a Main Distribution Frame (MDF). Such a circuit board may be installed in a data only shelf, i.e. wherein Line Cards (LC) that ordinarily populate the shelf support data traffic that arrives via the slot-to-slot interface.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: October 15, 2002
    Assignee: Nokia Internet Communications Inc.
    Inventor: Armen Soghomonian
  • Patent number: 6459275
    Abstract: Determining that a slope of test values resulting from two test conditions being applied to a remote device via a network connection and a reference circuit is within a predetermined range, and applying full power to the remote device if the slope is within the predetermined range. The determination using the slope reduces the effects of voltage drop variation caused by diodes and leakage of current by transistors in the remote device. The determination is performed by first applying a first reference voltage to both the remote device and reference circuit and storing the resulting two voltages. Next, a second reference voltage is applied to both the remote device and reference circuit and the resulting two voltages are stored. A first difference is calculated from the two voltages resulting from the testing of the remote device, and a second difference is calculated from the two voltages resulting from the testing of the reference circuit.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 1, 2002
    Assignee: Avaya Technology Corp.
    Inventors: John E. Ewalt, Dieter John Henry Knollman
  • Patent number: 6452402
    Abstract: An electronic device comprising a processor 4 and a connector 2 for connecting an external device to the electronic device. The connector has a plurality of electrical contacts 23-27 at least one of which 23 is connected to the processor 4. The processor 4 is arranged to monitor the status of a first electrical contact 23 and to determine the type of external device connected to the connector 2 in dependence on the status of the first electrical contact 23.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: September 17, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventor: Kanji Kerai
  • Patent number: 6452398
    Abstract: An apparatus for performing non-contacting measurements of the voltage of a conductor includes a conducting membrane coupled to a transducer. The membrane is driven with an A.C. reference voltage, creating alternating attractive and repulsive electrostatic forces caused by the difference in potential between the membrane and the conductor. The transducer generates a signal having the same frequencies as the forces on the membrane, and the amplitudes of the A.C. components are proportional to the unknown voltage on the conductor. By dividing the amplitude of the A.C. components, an accurate determination of the unknown voltage is calculated A plurality of membranes and transducers may be arrayed to provide an image of multiple voltage readings. In addition, it is also possible to measure A.C. and D.C. voltage on the center conductor of an insulated wire without the need to pierce the insulation.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: September 17, 2002
    Inventors: Joel Libove, Steven Chacko, Jerome Singer
  • Publication number: 20020118023
    Abstract: Determining that a slope of test values resulting from two test conditions being applied to a remote device via a network connection and a reference circuit is within a predetermined range, and applying full power to the remote device if the slope is within the predetermined range. The determination using the slope reduces the effects of voltage drop variation caused by diodes and leakage of current by transistors in the remote device. The determination is performed by first applying a first reference voltage to both the remote device and reference circuit and storing the resulting two voltages. Next, a second reference voltage is applied to both the remote device and reference circuit and the resulting two voltages are stored. A first difference is calculated from the two voltages resulting from the testing of the remote device, and a second difference is calculated from the two voltages resulting from the testing of the reference circuit.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Inventors: John E. Ewalt, Dieter John Henry Knollman
  • Patent number: 6442498
    Abstract: An portable apparatus and method for troubleshooting and determining the integrity of cables and wiring harnesses requiring connection to only one end of the cable or wiring harness to be tested. A series of tests are conducted to determine the integrity of each wire within the cable or wiring harness. The data is then evaluated and compared to the data of a known good cable or wiring harness stored in a memory device or CD-ROM. The faulty cable or wiring harness, if any, are displayed along with a list of shorts or opens present between cables or between a cable and aircraft ground, and the exact distance to any detected fault.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: August 27, 2002
    Inventor: Henrick Youval Krigel
  • Patent number: 6429661
    Abstract: A fault indicator for three phase sheathed cables includes a flexible collar unit which fits over the cable. Magnetic pole pieces within the collar unit having associated magnetic windings are aligned with the three conductors within the cable to produce signals indicative of the current level in each conductor. An alarm unit receives the signals and sounds an alarm in the event the current in any conductor exceeds a predetermined threshold level to indicate the occurrence of a fault. The voltage level of the current indicating signals may be utilized to align the magnetic core assemblies with the conductors.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: August 6, 2002
    Inventor: Edmund O. Schweitzer, Jr.
  • Patent number: 6420881
    Abstract: In circuit tester apparatus using one or more carrier elements, each carrier element having one or more first electrical connectors, the combination comprising one or more base sections, one or more second electrical connectors carried by the section or sections and positioned to interfit the one or more first electrical connectors when the element or elements are assembled to the section or sections, at least two of the multiple base sections located for bridging thereof by at least one carrier element. Carrier elements may comprise adapter cards.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: July 16, 2002
    Assignee: Eubanks Engineering Co.
    Inventors: Kenneth N. Rockwell, Roy G. Brant
  • Publication number: 20020084787
    Abstract: An apparatus for verifying port and slot assignments of cable bundles that extend from a telephony filtering device, including Digital Subscriber Line (DSL) infrastructure is disclosed. The apparatus may have a circuit board that inserts into a vacant slot of a frame of DSL equipment. The circuit board (sometimes called a LC circuit board) provides a connector that provides electrical continuity from a voltage driven indicator to, e.g. a slot-to-slot interface. One lead to the indicator may be held to a high voltage by a voltage source. A remaining lead, or probe input, may be connected to a common ground to cause the indicator to illuminate. Frequently, the common ground circuit closure may occur at a Main Distribution Frame (MDF). Such a circuit board may be installed in a data only shelf, i.e. wherein Line Cards (LC) that ordinarily populate the shelf support data traffic that arrives via the slot-to-slot interface.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventor: Armen Soghomonian
  • Publication number: 20020079904
    Abstract: A cable termination assembly for testing the quality of insulation surrounding a power cable has one termination design to fit a large range of cable constructions, does not require different insulation shield cut-back distances, provides a secure electrical connection, and is environmentally friendly. A cable grip assembly is attached to an exposed conductor. The bottom outer surface of an inner cup is attached to the inner bottom surface of an outer cup wherein the inner cup is fully contained in the outer cup. When the two cups are attached, the cable grip assembly is mateably connected into the top of the inner cup and the outer cup is filled with a high dielectric strength liquid covering the inner cup and the cable grip assembly. After the high dielectric strength liquid has been added, a voltage is applied and the partial voltage discharge of the power cable is measured.
    Type: Application
    Filed: December 26, 2000
    Publication date: June 27, 2002
    Inventors: Yingli Wen, Andre Pion, Nathan J. Kelly, Claude Hebert