 environments used in the proton SEE evaluation of a commercial fiber channel transceiver set fabricated in a Si p-ECL process [Cart-97]. The referenced paper describes the DUT and analyzes the test results, but a IV-24 VXI Mainframe Interface Equipment controller (LABVIEW program) (keyboard, monitor) Digital Input/Output Experimenter facility Irradiation room Programmable Fiber Fiber Serial Bit Channel Channel Bit Error Rate Stream Interface Interface Analyzer Generator Receiver Transmitter Evaluation board Signal Generator (53.124 MHz) Signal Generator (53.124 MHz) Figure 11. Block diagram for a 1.0625 gigabit per second proton-induced single event effects test of a commercial fiber channel chip set [Cart-97]. Testing required automatic data logging and remote control of both the DUTs and also the bit error rate test equipment. significant portion of the paper is devoted to the test hardware and methodology with emphasis on the fact that meaningful proton evaluations of high-speed technologies are nontrivial. As the data rates increase into the Gbps regime, availability of state-of-the-art bit error rate test equipment becomes a significant issue. Combined equipment costs can exceed $1M. The test development time and risk associated with transport to accelerator facilities are important concerns. As identified in figure 11, the test relied on a "VME eXtended for Instrumentation" (VXI) mainframe running LABVIEW® software to control instruments and capture data. conditions were set from the VXI chassis via a digital I/O card interface and General Purpose Interface Bus (GPIB). Software controlling the test flow included interfaces to the commercial 12.5 Gbps bit error rate test equipment as well as the custom hardware evaluation boards. During the test, errors were logged automatically and stored on the VXI controller's embedded processor module's hard drive, and simultaneously made available over an Eithernet hub for remote archival storage. The test flow control and software interface were exercised by test pers