HP 1660CS-Series User Manual page 257

The File System
File types
Filename endings
Filename endings are not restricted to certain types. These descriptions are
just general guidelines. In addition, other tools you use with the logic
analyzer will likely have their own set of filename endings.
[none] Of the common file types you can create using the logic
analyzer, only the ASCII listings do not have a default ending. If you
supply one in the Print to Disk filename field, that ending will be used,
but no ending is automatically appended as with other filenames.
Three other types of files commonly do not have a default ending: directories,
software, and autoload files. Check the file type field to be sure what type of
file you are selecting.
._A This ending is appended to analyzer configuration files created with
the Store operation from the System Disk menu.
._B This ending is appended to oscilloscope configuration files created
with the Store operation from the System Disk menu.
._ _ This ending is appended to system configuration files created with
the Store operation from the System Disk menu.
.TIF This ending is appended to TIFF version 5.0-format screenshots
created with the Print to Disk function.
.EPS This ending is appended to EPS-format screenshots created with
the Print to Disk function.
.PCX This ending is appended to PCX-format screenshots created with
the Print to Disk function.
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