Data Management
R&S
®
FSW
540
User Manual 1173.9411.02 ─ 19
Parameter
Setting
noise source
off
input
RF
8.2 Protecting Data Using the Secure User Mode
During normal operation, the R&S
FSW uses a solid-state drive to store its operating
system, instrument firmware, instrument self-alignment data, and any user data cre-
ated during operation. If necessary, the solid-state drive can be removed from the
R&S
FSW and locked in a secure place to protect any classified data it may contain.
Redirecting storage to volatile memory
Alternatively, to avoid storing any sensitive data on the R&S
FSW permanently, the
secure user mode
was introduced (option R&S
FSW-K33). In secure user mode the
instrument’s solid-state drive is write-protected so that no information can be written to
memory permanently. Data that the R&S
FSW normally stores on the solid-state drive
is redirected to volatile memory instead, which remains available only until the instru-
ment is switched off. This data includes:
●
Windows 7 operating system files
●
Firmware shutdown files containing information on last instrument state
●
Self-alignment data
●
General instrument settings such as the IP address
●
Measurement settings
●
User data created during operation
(see also
)
●
Any data created by other applications installed on the R&S
FSW, for example text
editors (Notepad), the Clipboard, drawing tools etc.
Data that is stored in volatile memory can be accessed by the user just as in normal
operation; however, when the instrument’s power is removed, all data in this memory is
cleared. Thus, in secure user mode, the instrument always starts in a defined, fixed
state when switched on.
In order to store data such as measurement results permanently, it must be stored to
an external storage device, such as a memory stick.
Limited storage space
The volatile memory used to store data in secure user mode is restricted to 256
MB.
Thus, a "Memory full" error may occur although the hard disk indicates that storage
space is still available.
Protecting Data Using the Secure User Mode
