172 Chapter 8
Hardware Options
Overview of Option 115 Extended Memory (all PSA Series)
Overview of Option 115 Extended Memory
(all PSA Series)
Provides 512 MB of additional memory for optional measurement
personalities (such as Option BAF, W-CDMA), user state, trace and
screen dumps, and personality power on last state files. This 512 MB of
memory is in addition to the 64 MB of flash memory mounted on the
CPU assembly. This CPU flash memory contains the instrument core
firmware, license keywords, amplitude correction data, limit lines, and
network settings.
The extended memory is in the form of a 512 MB compact flash card
mounted on the Option 115 extended memory assembly. This assembly
also includes the circuitry for Option 111 USB, however USB
functionality requires a separate license for it to be enabled.
Because the extended memory /USB assembly also contains the
keyboard connector, this assembly will be included in all new
instruments, even though the Option 115 or Option 111 are not licensed
and are not available for use. Therefore just because the hardware is
installed, it does not mean it is functional. You must view the
Show
System
screen or the licensing screen to determine which options are
available.
NOTE Option 117, Secure Erase, is designed for security conscious customers.
If Option 117 is installed, Option 115 will not be available, even though
the memory board with the compact flash card are installed in the
instrument. When Option 117 is present, the 64 MB of flash memory on
the CPU is mounted read only, and contains the instrument core
firmware, all optional measurement personalities (that will fit), license
keywords, and network settings. Basically all the files a user cannot
store sensitive data into. The 512 MB memory on the extended memory
board now contains only the user data such as state, trace or screen
dumps, amplitude correction files, power on last state files, and any
files a user could store data in. Option 117 allows you to completely
erase the contents of the 512 MB flash card by pressing the Secure
Erase User key. Since the instrument core firmware is on the CPU
Flash card, the instrument will still be functional after erasing the
512 MB memory.
See Option 117 secure memory description in Chapter 1, “Overview,” for
additional information.
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