The KDI 572 DME Master Display offers simultaneous readout of distance, groundspeed and time-to-station. Slant-range distance is computed digitally and displayed up to the maximum range of 389 nm. Station lock-on is typically achieved within three seconds, with accurate groundspeed and TTS computations becoming available within one minute. The KDI 572's control switch includes settings for ON/OFF, along with NAV 1, NAV 2 and DME HOLD. A light-sensing photocell provides automatic display dimming.