Preparing for Use
R&S
®
ESW
37
Getting Started 1328.4922.02 ─ 06
●
Self-alignment data
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General instrument settings such as the IP address
●
Measurement settings
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User data created during operation
●
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 opera-
tion. However, when the instrument’s power is switched off, all data in this mem-
ory 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
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 can occur although the hard disk indi-
cates that storage space is still available.
Storing required data permanently
Any data that is to be available for subsequent sessions with the R&S
ESW must
be stored on the instrument permanently,
before activating the secure user mode
.
This includes predefined instrument settings, transducer factors and self-align-
ment data.
Self-alignment data
Note that self-alignment data becomes invalid with time and due to temper-
ature changes. Therefore, to achieve optimal accuracy, it may be preferable
to perform a new self-alignment at the start of each new session on the
R&S
ESW.
Restricted operation
Since permanent storage is not possible, the following functions are not available
in secure user mode:
●
Firmware update
●
Activating a new option key
Protecting Data Using the Secure User Mode
