ECSS Communications — Telemetry in the Blind (space-systems/ecss/e50-telemetry-in-the-blind)

Determine whether a spacecraft can transmit telemetry in the blind under ECSS-E-ST-50C clause 5.5.4: check the blind mode arms itself within the required time after the uplink is lost, that its carrier, modulation, coding and rate are a default the ground can acquire without first sending a command, and close the worst-case link budget at maximum range on the low-gain antenna to show the blind rate is actually receivable. Use when sizing a launch-and-early-orbit or safe-mode downlink, reviewing a no-uplink recovery path, or verifying an emergency beacon configuration. Trigger: ecss, e-st-50-communications-scope, telemetry-in-the-blind, uplink-loss-timeout-arming, default-…