Instruction manual

12
Charging the battery
 Charging starts when the AC adapter is connected to the instrument, regardless of the power switch
status. It takes 15 hours to complete charging.
 The battery capacity lowers due to self-discharge. To compensate the capacity lost due to self
discharge, intermittent charging is performed automatically.
 When charging a battery with small charging capacity, supplementary charging of about one hour is
performed.
 Charging status is indicated by the charging lamp.
Charging lamp Charging status Description
Charging of 15 hours is being
performed.
Right after the AC adapter is connected.
Normal condition
Lit continuously.
Intermittent charging of 4 hours is being
performed.
Occurs about once a week when the AC
adapter is kept connected after 15-hour
charging.
Normal condition
Flashes every ten
seconds
Supplementary charging is being
performed.
Occurs in the early stage of 15-hour
charging.
Normal condition when the lamp
stops flashing and is lit after a
maximum of 4 hours.
Flashes every two
seconds
Error
Remove the battery once and
install again. If the condition
persists, replace the battery.
Not lit Charging is complete. Normal condition.
Note
• When the operating hours of the battery are short even after charging, replace the battery. Refer to "8-1
Accessories/Options" for ordering information.
• Replace the battery every two years.
• The battery may have deteriorated before two years of use, due to the environment and usage
conditions.
• For battery operation, refer to "6-12 Power Supply".
• When the charging lamp will not light right after the AC adapter is connected, remove the battery and
install it again.