Testing of transmitters for communication links by software...

Optical communications – Diagnostic testing – Test signal

Reexamination Certificate

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C398S025000, C398S026000

Reexamination Certificate

active

08009981

ABSTRACT:
A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.

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