Battery Replacement - AD Instruments AD2821A Manual De Operación

AD2821A OPERATION MANUAL
will be lighted on the screen.
l Press MENU key, APO will be flashing on the screen.
Current delay time is also displayed.

Press key to enter the auto power off function
l
setup, current delay time flashes on the screen.
 
Use , keys to select 5', 10', 20' or 30'.
l

l Press key to confirm the current delay time and
return to the main menu.
G
Note：
When an external DC adapter is used, APO function is disabled
automatically.
l Use ,  keys to select "CAL" function.

Press key to enter the calibration function. This
l
function is protected with password and is not
available for users.

3.3 Battery Replacement

G
Note：
The instrument will not be started, when the battery is weakening.
Replace the battery immediately.
l Loosen the three screws with suitable driver and
remove the bottom cover.
l Replace the degraded battery with a new DC 9V
battery.
l Model 1604, 006P or other equivalent battery must be
used. Alkaline battery is recommended.
l If the instrument is not in use for more than three
months, if the external DC adapter is always be used,
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