Rohde & Schwarz ESW Series - Protecting Data Using the Secure User Mode

Data Management
R&S
®
ESW
258User Manual 1177.6298.02 ─ 08
To restore the default configuration for a single channel
The default measurement settings can also be reset for an individual channel only,
rather than resetting the entire instrument.
► In the "Overview", select the "Preset Channel" button.
The factory default settings are restored to the current channel. Note that a user-
defined recall settings file is NOT restored.
Remote command:
SYSTem:PRESet:CHANnel[:EXEC] on page 593
12.2 Protecting Data Using the Secure User Mode
During normal operation, the R&S ESW 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 ESW 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 ESW permanently, the
secure user mode was introduced (option R&S ESW-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 ESW 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 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 Table 12-1)
●
Any data created by other applications installed on the R&S ESW, for example text
editors (Notepad), the Clipboard, drawing tools, etc.
Users can access data that is stored in volatile memory just as in normal operation.
However, when the instrument’s power is switched off, all data in this memory is
cleared. Thus, in secure user mode, the instrument always starts in a defined, fixed
state when switched on.
To store data such as measurement results permanently, it must be stored to an exter-
nal storage device, such as a memory stick.
Protecting Data Using the Secure User Mode