Systems and methods for measurement of electrical channel loss

An information handling system comprising:

• a processor;
• a first information handling resource communicatively coupled to the processor;
• a second information handling resource communicatively coupled to the processor and the first information handling resource, the second information handling resource having a receiver configured to:
• receive a test signal from a transmitter of the first information handling system resource;
• convert the test signal into a discrete-time digital signal representing the test signal;
• and
• generate a discrete-time finite difference function comprising a first derivative with respect to time of the discrete-time digital signal;
• and
• a baseboard management controller communicatively coupled to the second information handling resource and configured to transform the discrete-time finite difference function into a frequency-domain transform of the discrete-time finite difference function.

A method for characterizing electrical characteristics of a communication channel between a transmitter of a first information handling resource and a receiver of a second information handling resource comprising:

• receiving a test signal at the receiver from the transmitter;
• converting the test signal into a discrete-time digital signal representing the test signal;
• generating a discrete-time finite difference function comprising a first derivative with respect to time of the discrete-time digital signal;
• and
• transforming the discrete-time finite difference function into a frequency-domain transform of the discrete-time finite difference function.

An article of manufacture comprising:

• non-transitory computer-readable media;
• and
• computer-executable instructions carried on the non-transitory computer-readable media, the instructions readable by one or more processors, the instructions, when read and executed, for causing the one or more processors to characterize electrical characteristics of a communication channel between a transmitter of a first information handling resource and a receiver of a second information handling resource, wherein the instructions for causing the one or more processors to characterize the electrical characteristics comprise instructions for causing the processor to:
• receive a test signal at the receiver from the transmitter;
• convert the test signal into a discrete-time digital signal representing the test signal;
• generate a discrete-time finite difference function comprising a first derivative with respect to time of the discrete-time digital signal;
• and
• transform the discrete-time finite difference function into a frequency-domain transform of the discrete-time finite difference function.