R&S SMA100B - Page 309

File and data management
R&S
®
SMA100B
309User Manual 1178.3834.02 ─ 09
Types of user data
Depending on the content, the user data can be roughly divided into the following
data types:
●
Settings, e.g. the current instrument settings, can be saved and loaded later or
used in other instrument of the same kind.
See Chapter 11.4, "Saving and recalling instrument settings", on page 317
●
SCPI scripts, a series of commands that can be run to perform a task.
See Chapter 11.6, "Exporting and importing remote command lists", on page 323
●
Externally or internally generated lists, e.g. user correction lists, or data lists can be
loaded in the instrument.
See Chapter 11.7, "Loading, importing and exporting lists", on page 324 and
Chapter 11.5, "Accessing files with user data", on page 321
Depending on the data storage method, user data can be:
●
Persistent, i.e. user files that are recorded on the data storage.
Data is preserved when instrument is powered off and can be accessed and modi-
fied subsequently.
●
Temporary, i.e. volatile data that the instrument retains while it is powered on.
Volatile data is immediately lost when the R&S SMA100B is switched off.
File storage location
Without any additional measures, the R&S SMA100B stores user files on the internal
memory, the removable memory, or if connected, on a memory stick.
Both, the user directory /var/user/ on the internal memory or the /usb/ directory
on the memory stick, can be used to preserve user-defined data. Any directory struc-
ture can be created.
The /var/volatile directory serves as a RAM drive and can be used to protect
sensitive information. The data is available temporarily.
If option R&S SMAB-B85 is installed, the R&S SMA100B maps the user directory to
the removable memory. If a memory is mounted, user data is saved there. Otherwise
user data is redirected to the volatile memory.
Default storage location
The R&S SMA100B stores user data in the user directory.
Depending on the installed options, the user directory is physically located on the inter-
nal memory or on the removable memory.
In the file system, user directory is always indicated as /var/user/.
In manual control, you access this directory via the "File Manager", see Chapter 11.8,
"Using the file manager", on page 324. In remote control, you can query it with the
command :SYSTem:MMEMory:PATH:USER?.
To query and change the default directory used for mass storage, use the command :
MMEMory:CDIRectory.
About the file system