2. Remove the old battery by lifting the battery extractor loop.
3. Place the new battery in the battery compartment. Be sure to observe
proper polarity.
4. Re-install the battery cover before resuming use of the instrument.
NOTES:
• Less than 10% of battery life remains when the BAT annuncia-
tor turns on.
• When the battery is excessively discharged, the display is
blanked.
• If the instrument is going to be stored for a long period of time
or in a high temperature environment, remove the battery to
prevent leakage damage.
• After a new battery is installed, allow approximately 5 sec-
onds for display turn-on the first time the unit is turned on.
During this period, microcomputer initialization is per-
formed.
MEMORY BACKUP
During battery replacement, the contents of user-programmed memory
(data, operating modes, etc.) can be saved. Prior to removing the old battery,
turn off the instrument, and connect an HH22-AC battery charger. Then
exchange batteries, and disconnect the battery charger. Do not leave the bat-
tery charger connected to instruments with non-rechargeable batteries.
OPERATION WITH RECHARGEABLE
BATTERY
HH22-AC provides a 9-volt Ni-Cd battery and recharger suitable for use with
the unit. This battery provides 3-4 hours of continuous operation. This dura-
tion can be extended to several days by operating simultaneously from both
the battery and recharger.
Turn off the instrument to recharge the battery. Allow 7 hours to fully
recharge the battery. Then unplug the recharger to avoid overcharging.
10
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