Security Features & Document of Volatility 17
Instrument Memory & Volatility
ESG Memory
3. Coprocessor
Memory
(SRAM)
32 MByte
Yes
No
Operating memory of
baseband coprocessor
CPU
During normal
operation,
some user
information,
such as
payload data,
can remain in
the memory.
This memory is
used during
normal
baseband
generator
operation. It is
not directly
accessible by
the user.
Not battery
backed.
Turn off
instrument power.
4. Buffer Memory
(SRAM)
5 x 512 KByte
No
No
Support buffer memory
for ARB and real-time
applications
Normal user
operation
This memory is
used during
normal
baseband
generator
operation. It is
not directly
accessible by
the user.
Not battery
backed.
Turn off
instrument power.
Table 4-4
Vector Models with Baseband Generator (E4438C with Options 601 or 602)
Memory
Component,
Type and Size
Wr
itab
le Dur
ing
No
rm
al
Operat
ion?
Data
Reta
ine
d When
Po
we
re
d Of
f?
Purpose/Contents
Data Input
Method
Location in
Instrument and
Remarks
Sanitization
Procedure
