Apparatus for monitoring a network

Details Apparatus for monitoring a network Apparatus for monitoring a network

2005-03-24

2009-06-16

Pham, Chi H (Department: 2416)

Multiplex communications

Diagnostic testing

C370S282000, C379S001030, C379S032010, C340S315000, C340S315000

Reexamination Certificate

active

07548515

ABSTRACT:
An apparatus to actively monitor a network having a plurality of twisted-pair communication links. The apparatus includes a plurality of amplifiers corresponding, respectively, to the plurality of twisted-pair communication links, each amplifier having a sufficiently high input impedance and common-mode voltage tolerance to non-intrusively copy a data signal transmitted through a corresponding twisted-pair communication link and amplify the copied data signal. The apparatus further includes a plurality of isolation transformers corresponding, respectively, to the plurality of amplifiers, each isolation transformer receiving the amplified, copied data signal from the corresponding amplifier, and outputting a transformed data signal, and a connector receiving the transformed data signals from the plurality of isolation transformers in a pin order corresponding to the plurality of twisted-pair communication links. A protocol analyzer is also provided to receive the transformed data signals via the connector for decoding and monitoring purposes.

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