RT_Trig_Direct_Dist: Triggered Test Direct Distance and Path Distance 2D
RT_Trig_Direct_Dist: 141, 5 (0x8D0520 + unit ID) (0x345)
Bytes 0-3: Direct Distance
Bytes 4-7: Path Distance 2D
Distance resolution is m/1000
Direct Distance is the "line of sight" (shortest) displacement from the start location of the triggered test.
Path Distance 2D is the cumulative total path distance travelled since the start of the triggered test excluding the vertical component.