Rohde & Schwarz ZVH4 - 4.1 Volatile Memory

Types of Memory and Information Storage in the R&S ZVH
R&S
®
ZVH
4Instrument Security Procedures 1178.4324.02 ─ 02
Memory type Size Content Volatility User
data
Sanitization proce-
dure
Video - SRAM
(main board)
512 kbyte
●
Display memory (video
memory)
●
Screen images
Volatile Yes Turn off instrument
power and remove
the separate power
supply unit
Measurement -
SRAM (main
board)
2 Mbyte Intermediate measurement
data
Volatile Yes Turn off instrument
power and remove
the separate power
supply unit
256 kbyte Measurement control data
EEPROM
(front-end
board)
32 kbyte
Hardware information:
●
Serial number
●
Product options
●
Calibration correction
data
Non-volatile No None required (no
user data)
SRAM (main
board)
1 Mbyte or
8 Mbyte
●
Active instrument and
measurement setup
●
Active measurement
data
Non-volatile
(battery
backup)
Yes "Sanitize internal
memory" procedure
(see Chapter 5,
"Instrument Declas-
sification",
on page 6)
Flash (main
board)
4 Mbyte or
8 Mbyte
●
Instrument firmware
●
Factory default settings
●
User general settings
●
User data
●
User calibration data
●
Saved user data sets
Non-volatile Yes "Sanitize internal
memory" procedure
(see Chapter 5,
"Instrument Declas-
sification",
on page 6)
4.1 Volatile Memory
The volatile memory in the instrument loses its contents 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.
Video - SRAM
The main board of the R&S ZVH Cable and Antenna Analyzer has one 512 kbyte
SRAM memory device. The SRAM contains the video (display) memory. The
(Video-)SRAM loses its memory as soon as the instrument is switched off and the sep-
arate power supply unit power is removed.
Sanitization procedure: Turn off instrument power and remove the separate power
supply unit
Volatile Memory