R&S
®
NGM/NGL
Types of Memory and Information Storage
Instrument Security Procedures 3662.9729.02
4
The declassification procedures described in this document are designed to meet the
requirements specified in DoD 5220.22-M, "National Industrial Security Program
Operating Manual (NISPOM)", Chapter 8.
Types of Memory and Information Storage
The NGM/NGL Power Supplies contain various memory components. The following
table provides an overview of the memory components that are part of your instrument.
For a detailed description regarding type, size, usage and location, refer to the
subsequent sections.
Table 4-1: Memory types
Memory type
Size
Content
Volatility
User
Data
Sanitization
procedure
Main Processor
Internal Caches and
Memory
-
Startup and
operating
instructions,
operating data and
states
Volatile
Yes
Power Off
DDR3 SDRAM
2 x 2Gb
Operating
instructions, user
and program data
Volatile
Yes
Power Off
eMMC NAND Flash
4GB
Board and device
IDs, instrument
firmware, calibration
data, instrument
settings, state and
user data
Non-volatile Yes
Secure Erase
MCU Internal Flash
256+3KB per chip
R&S NGL201 x1
R&S NGM201 x1
R&S NGL202 x2
R&S NGM202 x2
Channel control
firmware and
calibration data
Non-volatile No
Not required
MCU Internal SRAM
32 KB per chip
R&S NGL201 x1
R&S NGM201 x1
R&S NGL202 x2
R&S NGM202 x2
Channel operating
data
Volatile
No
Power Off
EEPROM
32Kbit
Calibration and
production data
Non-volatile
No
Not required
4.1 Volatile Memory
The volatile memory in the instrument loses its contents as soon as power is removed
from the instrument. The volatile memory is not a security concern. Removing power
