Agilent Technologies E8257D PSG User Manual page 81

Table 2-2 Base Instrument Memory (Continued)
Memory
Type
and Size
Calibration No Yes
Backup
Memory
(Flash)
512 KB
Boards No Yes
Memory
(Flash)
512 Bytes
Micro– Yes No
processor
Cache
(SRAM)
3 kB
Table 2-3 Baseband Generator Memory (Options 601 and 602)
Memory
Type
and Size
Waveform Yes No
Memory
(SDRAM)
40−320 MB
BBG No Yes
Firmware
Memory
(Flash)
32 MB
Coprocessor Yes No
Memory
(SRAM)
32 MB
Chapter 2
Purpose/Contents Data Input Method Location in Instrument and Remarks
factory factory or service
calibration/configuration only
data backup
no user data
factory calibration and factory or service
information files, code only
images, and self–test
limits
no user data
CPU data and instruction memory is managed
cache by CPU, not user
Purpose/Contents
waveforms (including header
and marker data) and PRAM
firmware image for
baseband generator
operating memory of
baseband coprocessor CPU
motherboard
all RF boards, baseband generator, and
motherboard
CPU board, not battery backed.
Data Input Method Remarks
normal user User data is completely sanitized when you
operation perform the Erase and Sanitize function. Not battery
backed.
firmware upgrade
During normal This memory is used during normal baseband
operation, some generator operation. It is not directly accessible by
user information, the user. Not battery backed.
such as payload
data, can remain in
the memory.
Basic Operation
Using Security Functions
67