Fault-Tolerant Transmission Line Noise/Fault Detector
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
This article describes a fault-tolerant transmission line noise/fault detector which detects abnormal noise or open/short circuit faults on a balanced transmission line by detecting line imbalance with a toroidal core transformer. Balanced transmission lines, such as twisted shielded pairs, are often used to interconnect processor equipment via data bus or point-to-point connection. Faults that degrade balance can make the system susceptible to noise that degrades performance. Malfunctions often appear as intermittent failures. Consequently, these faults are difficult to identify and isolate to the transmission line. A conventional method of detecting cable faults utilizes two receivers and a comparator that detect input signals relative to a system ground and flags when they do not compare.