RT_Trig_Lon_Dist_To_Impact: Triggered Test Longitudinal Time and Distance to Marker Impact
RT_Trig_Lon_Dist_To_Impact: 141, 17 (0x8D1120 + unit id) (0x351)
Bytes 0-3: Longitudinal time to impact (s)
Bytes 4-7: Longitudinal distance to impact (m)
Time to impact resolution is s/1000.
Distance to impact resolution is m/1000.
Validity and impact flags are provided by RT_Trig_Lat_Dist_To_Impact.