GW Instek APS-1102A User Manual - Manual (Page 265)

8 MAINTENANCE
APS-1102A 8-7
8.5 Backup Battery
The contents of memory ( See “4.8 Using Memory Functions”) and other required parameters
and data are backed up by a lithium battery in the APS-1102A.
The backup period varies according to the temperature and use conditions, but it is approximately five
years when stored with the power off.
The backup data is checked at power-on, and an error message is displayed if the data has been corrupted
( See “7.2 Error Messages and ”), in which case the unit is reset to the initial values.
( See “4.8 Using Memory Functions”.)
The icon will blink if the backup battery has been drained and the data has been lost. If the
icon still blinks after restarting several times, the battery needs to be replaced. Contact GW
Instek or our agent. See “Table7-18”.