Evaluate an on-board network against its error-rate budget under ECSS-E-ST-50C clause 5.7.1.8. Turn a channel bit error rate into a frame error rate for the frame length in use, derive errored frames per second and the mean time between errored frames at the offered traffic rate, estimate the residual undetected error rate left after the frame check sequence, project undetected errors across the mission, and compare raw and residual figures with the required values. Use when writing or reviewing an on-board link error budget. Trigger: ecss, e-st-50-communications, onboard-network-error-rate, bit-error-rate-to-frame-error-rate, residual-undetected-error-rate, mean-time-bet…