Forward-Link/Simulator PCI Card

The forward-link/simulator card (FLS) performs the fundamental satellite-telemetry data-transmission function for the forward (Earth-to-spacecraft) link in real time at rates up to 400 Mb/s. The FLS also simulates a Consultative Committee for Space Data Systems (CCSDS) telemetry data source that outputs data at rates up to 150 Mb/s, using industry-standard interface circuitry and standard connectors. Previously, at least two cards, each containing a central processing unit (CPU), were needed to do what the FLS now does. CPU-based cards are complex; are expensive to build, operate, and maintain; are susceptible to malfunction; and require a great deal of power and cooling.