Rohde & Schwarz SMF-B1, Operating Manual

Page: 388 / 653

Remote Control Commands
R&S
®
SMF100A
373 Operating Manual 1167.2319.02 ─ 12
Manual operation: See "Layout (USB Keyboard Settings)" on page 118
7.10 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 CompactFlash TM Card of the instrument or on external USB
memory devices.
The
/var/user/
directory can be used to save user-defined data; any subdirectory
structure can be created on
/var/user/
. Some default subdirectories are predefined,
but can be changed at any time.
The default directory is determined using the command
MMEMory:CDIR
.
Use the command
:SYSTem:MMEMory:PATH:USER?
to query the path of the direc-
tory for user-defined data.
The
/opt
directory is a protected and therefore a not accessible 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.
7.10.1 File Naming Conventions
To enable files in different file systems to be used, the following file naming conven-
tions should be observed.
The file name can be of any length and is case-sensitive, meaning it is distinguished
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).
If possible, special characters should not be used. The use of the slashes "\" and "/"
should be avoided since they are used in file paths. A number of names are reserved
for the operating system, e.g.
CLOCK$
,
CON
,
AUX
,
COM1...COM4
,
LPT1...LPT3
,
NUL
and
PRN
.
In the R&S SMF 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 Chap-
ter 4.7.2.1, "Extensions for User Files" , on page 95 for an overview of the file types).
The two characters "*" and "?" function as "wildcards", meaning 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 files in a directory.
MMEMory Subsystem