Your file is not in HEX format (exclusively using characters 0..F and maybe delimiters)
You file seems to be mostly binary, with some header sections consisting of readable strings.
You need to know the structure of the file (header size, datatype, byte order, etc.) Do you have more information? Do you have the program that created the file?
(I am sure with some twiddling most of the data could be retrieved by trial and error ...)
Thanks for your replying.
I have the Matlab code which can read this file, see attach.
Previous file is the High Speed Dat File.
Could you help to confirm?