6
Keysight U1401B Quick Start Guide
Recharging the Batteries
Charge the batteries immediately when the low
battery annunciator starts flashing. It is strongly
recommended that you use only the specified
type of 24 V AC adapter to charge these
rechargeable batteries.
1
Power down the instrument and disconnect
all the test leads from the terminals.
2
Plug the AC adapter into the jack on the side
panel.
3
Set the slide switch at the
CHARGE
position.
4
The red light indicates that the batteries are
being recharged.
Set slide switch at the
CHARGE position
Charging indication
Green: Fully charged
Red: Charging
External AC
adapter jack