Testing system for an electrical cable

A testing system, comprising:

• an electrical cable;
• a computing device;
• a downstream section comprising a plurality of downstream devices, downstream signal attenuation circuitry coupled to a first portion of the electrical cable, and downstream extension cables that couple the plurality of downstream devices to the downstream signal attenuation circuitry;
• an upstream section comprising upstream signal attenuation circuitry coupled to a second portion of the electrical cable, a communication interface coupled to the computing device, and upstream extension cables that couple the upstream signal attenuation circuitry to the communication interface;
• and
• testing software stored on the computing device, the testing software being configured to:
• initiate a test of the electrical cable by transferring data between the computing device and the plurality of downstream devices through the upstream section, the electrical cable, and the downstream section;
• determine an error rate related to the transferring of the data between the computing device and the plurality of downstream devices;
• and
• determine whether the electrical cable passes the test based at least in part on the error rate.