Security Features and Document of Volatility 19
Instrument Memory & Volatility
Volatile Memory
Volatile Memory
The volatile memory in the instrument does not have battery backup. It does
not retain any information when AC power is removed.
Removing power from this memory meets the memory sanitization
requirements specified in the “Clearing and Sanitization Matrix” in
Section 14.1.16 of the ODAA Process Manual for the Certification and
Accreditation of Classified Systems under the NISPOM.
Table 4-3 Summary of Volatile Instrument Memory
Memory Type
and Size
Writable During Normal
Operation?
Data Retained When
Powered Off?
Purpose/Contents Data Input Method Location in
Instrument and
Remarks
Sanitization
Procedure
1. SDRAM
256 MByte
Yes No Contains measurement
data from data
acquisition system.
Programmed by
firmware. Not
accessible by user.
A3 Digital IF
Assy.
Contains raw
measurement
data.
Turn off
instrument
power.
a
2. Processor
SDRAM
16 GByte
Yes No Main dynamic RAM
memory for processor.
Contains working
copies of Operating
System, instrument
measurement
applications,
calibration data, and
measurement data.
Programmed before
installation, or by
factory/service center
calibration procedure
software, or by
firmware upgrade
installation software.
Also programmed via
firmware operations
and by user.
A4 Processor
Assy.
Contains user
data.
Turn off
instrument
power.<Keysig
ht Red>
a
3. SDRAM
2 GByte
Yes No Contains measurement
data from data
acquisition system.
Programmed by
firmware. Not
accessible by user.
A3 Digital IF
Assy.
Contains raw
measurement
data.
Turn off
instrument
power.<Keysig
ht Red>
a
4. SDRAM
2_GByte
Yes No Contains measurement
data from data
acquisition system.
Programmed by
firmware. Not
accessible by user.
A22 Digital IF
(Option B2X)
Contains raw
measurement
data.
Turn off
instrument
power.<Keysig
ht Red>
a
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