Remote Control Commands
R&S
®
SMC100A
224
Operating Manual 1411.4060.32 ─ 04
Usage:
Query only
SCPI confirmed
7.9 MMEMory Subsystem
The MMEMory subsystem (
M
ass
Mem
ory) contains the commands for managing files
and directories as well as for loading and storing complete instrument settings in files.
The files are stored on the internal flash memory of the instrument or on external USB
memory devices.
The
/var
directory can be used to save user-defined data; any subdirectory structure
can be created on
/var
. Some default subdirectories are predefined, but can be changed
at any time.
The default directory is determined using the command
MMEMory:CDIR
.
The
/opt
directory is a protected and therefore unaccessible system directory. The files
on this directory contain data that must not be changed. Therefore, this directory should
not be accessed, since reconstruction of the system partition will lead to data loss.
7.9.1 File Naming Conventions
To enable files in different file systems to be used, the following file naming conventions
should be observed.
The file name can be of any length and no distinction is made between uppercase and
lowercase letters. The file and the optional file extension are separated by a dot. All letters
and numbers are permitted (numbers are, however, not permitted at the beginning of the
file name). Where possible, special characters should not be used. Use of the slashes
"\" and "/" should be avoided since they are used in file paths. A number of names are
reserved by the operating system, e.g.
CLOCK$
,
CON
,
AUX
,
COM1...COM4
,
LPT1...LPT3
,
NUL
and
PRN
.
In the R&S Signal Generator all files in which lists and settings are stored are given a
characteristic extension. The extension is separated from the actual file name by a dot
(see
chapter 4.7.2.1, "Extensions for User Files"
, on page 72 for an overview the file
types).
The two characters "*" and "?" function as "wildcards", i.e. they are used for selecting
several files. The "?" character represents exactly one character, while the "*" character
represents all characters up to the end of the file name. "*.*" therefore stands for all the
files in a directory.
When used in conjunction with the commands, the parameter
<file_name>
is specified
as a string parameter with quotation marks. It can contain either the complete path
including the drive, only the path and file name, or only the file name. The file name must
include the file extension. The same applies for the parameters
<directory_name>
and
<path>
.
MMEMory Subsystem
