HP 54710A User's Reference Manual page 132

Disk Menu
Type
Database
The database type is for storing the database to a disk or for loading a
database file from a disk. A database file is stored in the internal format only,
and database files have a .WDB file extension.
Pixel
A pixel memory file has a .PIX file extension. A pixel file is a copy of the
pixel memory. It is a bitmapped file, so it does not contain any vertical or
horizontal scaling information. You can use pixel files as a template to
compare other waveforms against, or you can make timing diagrams for
signal analysis. When you load a pixel file into the oscilloscope, it is loaded
into the pixel memory by overwriting all data that was previously stored in
the pixel memory.
Setup
A setup file is a copy of the front-panel setups and it has a .SET file
extension. Saving setups to a disk allows you to save more front-panel setups
than the ten available in the oscilloscope. Ten front-panel setups may not be
adequate for a group of workers using the same oscilloscope, or you may
want to make sure that your front-panel setups are not accidentally modified
by a coworker.
Mask
The mask type is for storing a mask to a disk or for loading a mask file from a
disk. A mask file is stored in an ASCII format only, and mask files have a
.MSK file extension.
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