HP 8920B Programmer's Manual page 368

Chapter 6, Memory Cards/Mass Storage
Using Memory Cards
The Memory Card Battery
368
SRAM memory cards use a lithium battery to power the card. Listed below are the
batteries for the Test Set's SRAM cards. SRAM cards typically retain data for
°
over 1 year at 25 C. To retain data, the battery should be replaced annually.
SRAM Card Battery Part Numbers - CR2025 or HP 1420-0509Replacing the
Battery
Turn the Test Set on and insert the memory card. An inserted memory card takes power
from the Test Set, preventing the card's contents from being lost.
5. Hold the memory card in the slot with one hand and pull the battery holder out with your
other hand. (See figure 22
TheTest Set's SRAM cards have a Battery Holder Lock switch immediately above the
Write-Protect switch. If the switch is in the locked position the battery cannot be removed.
Ensure that the Battery Holder Lock switch is in the unlocked position before trying to
remove the battery.
6. Install the battery with the side marked "+" on the same side marked "+" on the battery
holder. Avoid touching the flat sides of the battery, finger oils may contaminate battery
contacts in the memory-card.
7. Re-insert the battery holder into the memory card.
The Test Set's SRAM cards have a Battery Holder Lock switch immediately above the
Write-Protect switch. Ensure that the Battery Holder Lock switch is in the locked position
after installing the new battery.
8. Remove the memory card from the Test Set.
.)