R&S ESU Series Operating Manual page 577

R&S ESU
6.14 MMEMory Subsystem
The MMEMory (mass memory) subsystem provides commands which allow for access to the storage
media of the instrument and for storing and loading various instrument settings.
The various drives can be addressed via the "mass storage unit specifier" <msus> using the conven-
tional DOS syntax. The internal hard disk is addressed by "D:", the flash disk by "F:".
For reasons of compatibility with the FSE/ESIB instruments, addressing the hard
disk by "C:" is also accepted. Since hard disk "C:" is reserved for instrument soft-
ware, all read and write operations are rerouted to hard disk "D:" in normal opera-
tion (service level 0).
The file names <file_name> are indicated as string parameters with the commands being enclosed in
quotation marks. They also comply with DOS conventions.
DOS file names consist of max. 8 ASCII characters and an extension of up to three characters separated
from the file name by a dot "." Both, the dot and the extension are optional. The dot is not part of the file
name. DOS file names do not distinguish between uppercase and lowercase notation. All letters and dig-
its are permitted as well as the special characters "_", "^", "$", "~", "!", "#", "%", "&", "-", "{", "}", "(", ")", "@"
and "`". Reserved file names are CLOCK$, CON, AUX, COM1 to COM4, LPT1 to LPT3, NUL and PRN.
The two characters "*" and "?" have the function of so-called "wildcards", i.e., they are variables for
selection of several files. The question mark "?" replaces exactly one character, the asterisk means any
of the remaining characters in the file name. "*.*" thus means all files in a directory.
MMEMory:CATalog? <path>
This command reads the indicated directory. According to DOS convention, wild card characters can
be entered in order to query e.g. a list of all files of a certain type.
The path name should be in conformance with DOS conventions and may also include the drive name.
Parameter: <path>::= DOS Path name
Example:
"MMEM:CAT? 'D:\USER\DATA'"
'Returns the contents of the D:\USER\DATA directory
"MMEM:CAT? 'D:\USER\DATA\*.LOG'"
'Returns all files in D:\USER\DATA with .LOG extension
"MMEM:CAT? 'D:\USER\DATA\SPOOL?.WMF'"
'Returns all files in D:\USER\DATA whose names start with SPOOL, have 6 letters
and the .WMF extension .
Return value: List of file names in the form of strings separated by commas, i.e.
'SPOOL1.WMF','SPOOL2.WMF','SPOOL3.WMF'
Characteristics: *RST value: -
SCPI: conform
Mode: R, A
6.138
Remote Control – Description of Commands
MMEMory Subsystem
Operating Manual 1302.6163.12 - 03