HP 8921A Programmer's Manual page 351

Setting the Write-Protect Switch
Figure 21 Setting the SRAM Write-Protect Switch
The SRAM memory card's write-protect switch lets the user secure its contents
from being overwritten or erased. The switch has two positions (see
• 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 Test Set, but cannot be
changed or erased.
Chapter 6, Memory Cards/Mass Storage
Using Memory Cards
figure 21
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