1
Gordon A Jensen, Stephen M Ernst: time-domain reflectometer for testing coaxial cables. Fluke Corporation, Dellett and Walters, December 17, 1996: US05586054 (132 worldwide citation)

A time-domain reflectometry device and method are provided wherein TDR may be performed on active Ethernet systems. A crossover network provides proper impedance termination both for pulse information generated by the TDR and for DC path signals. If a potential collision is detected when generating ...


2
Steve Ernst, Gordon A Jensen: Token ring local area network testing apparatus using time delay reflectory. Fluke Corporation, Sheridan Ross & McIntosh, January 10, 1995: US05381348 (41 worldwide citation)

A token ring local area network (LAN) testing apparatus is provided. The apparatus utilizes time delay reflectory (TDR) in testing cable conductors that link or interconnect stations on the token ring with the token ring media access unit (MAU). In making the TDR related measurements, a directional ...


3
Mark Copley, Gordon A Jensen: Token ring local area network testing apparatus for phase jitter testing. John Fluke Mfg Co, Sheridan Ross & McIntosh, May 3, 1994: US05309428 (31 worldwide citation)

A token ring local area network (LAN) testing apparatus is provided. The apparatus is able to conduct a phase jitter measurement without disruption of normal token ring operation. The apparatus transmits a frame that includes phase jitter test data. This frame is transmitted into the token ring, tog ...


4
Gordon A Jensen, Stephen M Ernst: Method and apparatus for measuring attenuation and crosstalk in data and communication channels. Forte Networks, Marger Johnson McCollom & Stolowitz PC, August 20, 1996: US05548222 (25 worldwide citation)

A termination control circuit is coupled to a far end of a cable. A modulated test signal is reflected back to a near end of the cable at a different frequency but at substantially the same level of attenuation as the test signal. Signal attenuation in the reflected signal is then measured to determ ...


5
Mark D Keisling, William R Marbaker, Christopher A Clabaugh, Gordon A Jensen: Method and apparatus for network analysis. Fluke Corporation, Dellett and Walters, September 2, 1997: US05664105 (23 worldwide citation)

A network analysis instrument employs a CPU, display and field programmable gate array circuitry to receive network data and detect various error conditions. Percent utilization is determined and information pertaining thereto is displayed to provide a user with information regarding network operati ...


6
Mark Copley, David G Fish, Gordon A Jensen, Chris L Odell, Charles H Whiteside, Thomas S Wisdom Jr: Token ring local area network testing apparatus inserted in an active "T" c o. Forte Networks, Fluke Corporation, Sheridan Ross & McIntosh, June 13, 1995: US05425017 (17 worldwide citation)

A testing apparatus for token ring local area networks (LANs) which can insert into the token ring network without requiring a separate port on a media access unit (MAU). The testing apparatus of the present invention is connected between a regular network station and the MAU. The testing apparatus ...


7
Gordon A Jensen, Stephen P Reames, Jerry D Morris, Scott S Neal: Runt packet filter. Hewlett Packard Company, Christopher J Byrne, Jon R Stark, July 7, 1987: US04679193 (11 worldwide citation)

Provided is a circuit for preventing local area network packets shorter than a predetermined bit length from being received by a local area network coprocessor. Serial data which would otherwise be received by the coprocessor is delayed by a data-shift register of predetermined bit length. Simultane ...


8
Gordon A Jensen: Digital data filter for local area network. Hewlett Packard Company, Christopher J Byrne, June 28, 1988: US04754420 (9 worldwide citation)

An apparatus for digital filtering of sequences of data units, such as sequences of bytes. The apparatus uses parallel application of more than one filter and stores the results of applying all filters to a whole sequence of data units. The apparatus involves the interaction of random access memorie ...