R&S AREG800A, Руководство пользователя

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Remote control commands
R&S
®
AREG800A
271 User Manual 1179.3615.02 ─ 01
●
Avoid using the following filenames:
CLOCK$
,
CON
,
COM1 to COM4
,
LPT1 to LPT3
,
NUL
or
PRN
They are reserved by the operating system.
Wildcards
The two characters "*" and "?" function as "wildcards", i.e. they are used for selecting
several files. The "?" character represents exactly one character, while the "*" charac-
ter represents all characters up to the end of the filename. "*.*" therefore represents all
files in a directory.
Filename and file path
When used in remote control commands, the parameter
<filename>
is specified as a
string parameter with quotation marks. It can contain either the complete path including
the root user directory
/var/user
and filename, or only the filename. The filename
must include the file extension. The same applies for the directory
/var/volatile
and for the parameters
<directory_name>
and
<path>
.
Depending on how much information is provided, the values specified in the parameter
or with the command
MMEM:CDIR
are used for the path and drive setting in the com-
mands.
11.10.2 Accessing files in the default or in a specified directory
For better overview and easy file handling, you may not save all user files in the user
directory
/var/user
but rater organize them into subdirectories.
The command syntax defines two general ways to access files with user data in a spe-
cific directory:
●
Change the current default directory for mass memory storage and then directly
access the files in this default directory, like saved list files, files with user data or
save/recall files.
The subsequent commands for file handling (select, delete, read out files in the
directory, etc.) require only specification of the filename. File extension can be
omitted; after syntax evaluation of the used command, the R&S
AREG800A filters
out the relevant files.
●
Define the complete file path , including the user directory
/var/user
, created
subdirectories and filename (see Example "Load file with user data from a specific
directory" on page 272).
As a rule, whenever an complete file path is determined, it overwrites a previously
specified default directory.
The following example explains this rule as a principle. Exceptions of this general rule
are stated in the description of the corresponding command. The
Chapter 11.10.3,
"Programming examples" , on page 272 explains the general working principle with the
commands for mass memory storage.
The same rule applies to the
/var/volatile
directory, see Example "Working with
files in the volatile memory" on page 274.
MMEMory subsystem