Are there some descriptions of data format used with RTSA suit? RTSA works with *.dat and *tag files. What are the format specification of these files?

The .dat (data) and .tag (tags) files allways belong together. The format is:

1. data (spectrum data)

header to data offset ( 2bytes )
file format version (2bytes)
datatype tag (2 bytes)
reserved (2bytes)
center frequency (8bytes)
span (4bytes)
itemCount per block
and then spectras (allways with itemCount with float)

2. tags (timestamps)

header to data offset ( 2bytes )
file format version (2bytes)
datatype tag (2 bytes)
reserved (2bytes)
and then timestamps (index ist correlated with spectras of .dat)
milliseconds since epoche (8byte)
nanoseconds (4 byte)