Programmable Error Injection With Interface LINE Selection
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
An improved method for testing the error detection, recovery and logging of a device or system is provided. A digital interface provides communications between two devices. By providing the capability to access any of the lines on the digital interface through an external device, the digital signals passing across the interface can be altered to simulate real hardware errors. The error injector device is inserted between two devices under test. Under normal use, the error injector provides a direct pass-through capability for each signal path between the devices. An error can be injected by first selecting a specific interface line between the two devices to inject the error on and then selecting a specific type of error (e.g., high, low, open, etc.) to inject. The error injector selection overview is shown in Fig. 1.