Agilent Technologies E8267D PSG User Manual
Page 81
Chapter 2
67
Basic Operation
Using Security Functions
Calibration
Backup
Memory
(Flash)
512 KB
No
Yes
factory
calibration/configuration
data backup
no user data
factory or service
only
motherboard
Boards
Memory
(Flash)
512 Bytes
No
Yes
factory calibration and
information files, code
images, and self–test
limits
no user data
factory or service
only
all RF boards, baseband generator, and
motherboard
Micro–
processor
Cache
(SRAM)
3 kB
Yes
No
CPU data and instruction
cache
memory is managed
by CPU, not user
CPU board, not battery backed.
Table 2-3 Baseband Generator Memory (Options 601 and 602)
Memory
Type
and Size
Wr
it
a
b
le
D
u
r
in
g
No
r
m
a
l O
p
e
r
a
ti
o
n
?
D
a
ta
R
e
ta
in
e
d
Whe
n
P
o
w
e
re
d
O
ff
?
Purpose/Contents
Data Input Method Remarks
Waveform
Memory
(SDRAM)
40
320 MB
Yes
No
waveforms (including header
and marker data) and PRAM
normal user
operation
User data is completely sanitized when you
perform the
Erase and Sanitize function. Not battery
backed.
BBG
Firmware
Memory
(Flash)
32 MB
No
Yes
firmware image for
baseband generator
firmware upgrade
Coprocessor
Memory
(SRAM)
32 MB
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.
Table 2-2 Base Instrument Memory (Continued)
Memory
Type
and Size
Wr
it
a
b
le
D
u
r
in
g
No
r
m
a
l O
p
e
r
a
ti
o
n
?
D
a
ta
R
e
ta
in
e
d
Whe
n
P
o
w
e
re
d
O
ff
?
Purpose/Contents
Data Input Method
Location in Instrument and Remarks