Patent ID: 9148505
Filing Date: 2015-09-29
Classification: H04M

Abstract:
1. A hand held test instrument for testing a Digital Subscriber Line (“DSL”), the instrument comprising: an interface for unintrusive connection with a DSL under test, the interface configured to capture Radio Frequency (RF) signals corresponding to a portion of a data stream transmitted by a communication device over the DSL under test; a controller module configured to identify unique characteristics of the communication device based on the captured RF signals; at least one amplifier configured to amplify the captured RF signals; a quadrature amplitude demodulator communicatively coupled to the amplifier, wherein the quadrature amplitude demodulator configured to derive first and second components of the amplified RF signals; and an Analog-to Digital (A/D) converter having an input communicatively coupled to an output of the quadrature amplitude demodulator and configured to convert the first and second components of the captured RF signals to yield digitized signals wherein the digitized signals comprise one or more data packets, with each data packet having a header and being representative of the portion of the data stream transmitted by the communication device over the DSL under test.