Types of Memory and Information Storage in the R&S
FSUP
R&S
®
FSUP
4
Instrument Security Procedures 1171.5702.52 ─ 02
Memory type
Size
Content
Volatility
User
data
Sanitization
procedure
SDRAM (CPU
board)
256
Mbyte
Temporary information storage
for operating system and
instrument firmware
Volatile
Yes
Turn off instru-
ment power
EEPROM
(board assem-
bly)
256
bytes up
to 32
kbyte
Hardware information:
●
Serial number
●
Product options
●
Calibration correction data
Non-volatile
No
None required
(no user data)
Flash (CPU
board)
512
kbyte
BIOS
Non-volatile
No
None required
(no user data)
Compact flash
(removable)
4
Gbyte
●
Operating system
●
Instrument firmware
●
Instrument states and set-
ups
●
Limit lines and transducer
tables
●
Trace data
●
Measurement results and
screen images
Non-volatile
Yes
Remove com-
pact flash mem-
ory from instru-
ment
4.1 Volatile Memory
The volatile memory in the instrument does not have battery backup. It loses its con-
tents as soon as power is removed from the instrument. The volatile memory is not a
security concern.
Removing power from this memory meets the memory sanitization requirements speci-
fied in the "Clearing and Sanitization Matrix" in section 5.2.5.5.5 of the ISFO Process
Manual for the Certification and Accreditation of Classified Systems under the NIS-
POM.
SDRAM
The SDRAM on the CPU board has a size of 256
Mbyte and contains temporary infor-
mation storage for operating system and instrument firmware. The SDRAM loses its
memory as soon as power is removed.
Sanitization procedure:
Turn off instrument power
4.2 Non-Volatile Memory
The R&S
FSUP contains various non-volatile memories. Out of these, only the remov-
able compact flash memory contains user data. The compact flash memory can be
physically removed from the R&S
FSUP and left in the secure area.
All non-volatile memories of the R&S
FSUP are not a security concern.
Non-Volatile Memory
