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Memory Clearing, Sanitization and Removal Procedures
Table 6-2 EEPROM Memories
Description and
purpose
These memories are used to identify the assemblies (header info) and store option
configuration data. Some are also used to hold factory software for FPGAs. The
software is loaded when the instrument powers up. This memory cannot be
written to during instrument operation.
Size 2 kbit to 8 Mbit
Memory clearing Not applicable. This memory does not contain user information and is not
accessible by the user.
Memory sanitization Not applicable. This memory does not contain user information and is not
accessible by the user.
Memory removal Not applicable.
Write protecting Not applicable.
Memory validation Not applicable.
Remarks With one exception, as described below, these memories are only writable by
factory/service center software, or upgrade installation software. These
memories are internally connected to proprietary internal control data busses (as
opposed to standard computer busses such as IDE, PCI, USB). They are not
accessible by the Operating System or by third-party software, or by the user, to
protect the measurement accuracy and consistency of the instrument. They are
rarely modified, to ensure no degradation of instrument performance. These
memories contain no user data. Many of these memories have long write times,
and limited write endurance, so they are not intended to be written to dynamically
by software.
The sole exception applies to the EEPROM on the A7 Midplane Assembly.
Inserting a USB memory device containing a valid license key file into the
instrument causes the key file to be copied to both the C: drive and the EEPROM
on the A7 Midplane Assembly.
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