Instrument Memory - Keysight AC6800 Series Information Manual

Instrument Memory

This section contains information on the types of memory available in your instrument. It explains
the size of memory, how it is used, its location, volatility, and the sanitization procedure.
Memory Type
and Size
On-Chip RAM Yes
64 Kbytes
Flash 1 Mbyte Yes
SRAM Yes
256 Kbytes
EEPROM Yes
1 Kbyte
Table 1: Summary of instrument memory
Purpose/ Contents
No Used for hardware
processing
Yes Operating system,
instrument firmware
No Temporary execution
data
Yes Model Info
(1st 256-byte block)
Calibration Info
(2nd 256-byte block)
(3rd & 4th blocks are
unused)
Data Input Method
When the instrument
boots up, the firmware
automatically uploads
the DSP program,
which is embedded in
the Main Flash memory
as a part of instrument
firmware data.
Factory install,
firmware update
By operating system or
instrument firmware
Factory Install, or by
service personnel
8
Location in Sanitization
Instrument and Procedure
Remarks
CPU board U29 Power cycle
(TMS320VC5502)
(embedded in the
DSP chip)
CPU board U4 N/A
(STM32F427) contains no
(embedded in the application-
DSP chip) specific
information
CPU board U4 Power cycle
(STM32F427)
(embedded in the
DSP chip)
CPU board U9 N/A
(BR24G08FVM) contains no
application-
specific
information