Rtd_v2_xmt
This format is designed to support the full number of range bins, almost the full number of data types, and both 8-bit and 16-bit data formats. As a result each radial must be split into potentially many individual 1500 byte UDP packets.
The volume header rtd_v2_vol_header is sent periodically. Every 25 rays, or
when there is a change. Otherwise the rtd_v2_ray_header is sent followed by
data.
