Types of Memory and Information Storage in the R&S FSUP
R&S
®
FSUP
4Instrument 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
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