A bit rate Agile Onboard Telemetry formatting system addresses the
increased demands on the efficiency of telemetry systems. The present
invention thins and reorders data streams, adjusting bit rates of a PCM
stream using a bit-locked loop to match the desired information rate
exactly. The present invention accomplishes the adjustment through
hardware by synthesizing a clock whose operating frequency is derived
from the actual timing of the input format. Firmware manages
initialization and error management.