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8-23
Instrument BASIC
Memory Cards
Setting the Write-Protect Switch
The SRAM memory card’s write-protect switch lets you secure its contents from
being accidentally overwritten or erased. The switch has two positions as illustrated
in Figure 8-8 on page 8-23:
• Read-write – The memory-card contents can be changed or erased, and new files
may written on the card.
• Read-only – The memory-card contents can be read by the Agilent 8922M/S, but
cannot be changed or erased.
Figure 8-8 Setting the SRAM Write-Protect Switch
Backing Up the Memory-Card Programs
SRAM memory cards contain a battery to preserve its contents when the Agilent
8922M/S is turned off or when the card is removed. Memory-card contents may be
backed up using the following procedure:
Procedure for Backing Up a Memory Card
The program COPY_PL on Agilent 8922M/S ROM backs up Test Procedure and
Test Library files onto a SRAM memory card. The program COPY_PL also lets you
to initialize the SRAM memory card. (Code files should reside on OTP memory
cards; an external “device programmer” is required to download code files into an
OTP memory card.)