LabVIEW Measurement (.lvm) is a text based file format. TDM Streaming (.tdms) is a stream based file format. For testing the Zynq® UltraScale+™ RFSoC with this evaluation software, Xilinx recommends the LVM file format for small patterns. For large patterns, such as a standard 4G/5G pattern, the TDMS file is recommended.