Hioki CM3289 Manuel D'instructions page 20

Functions
Functions
Auto power-saving function
Display will automatically turn off if the instrument
is not used for 30 min.
To resume instrument operation in the previous state, select
the "OFF" position with the rotary switch and then move the
switch to the desired function.
To cancel auto power-saving function
1.
Select the desired function with the rotary switch while
holding down
2.
The LCD display will change from
the auto power-saving function will be disabled.
3.
Setting the rotary switch to "OFF" and then reselecting the
desired function will enable the auto power-saving function.
Auto-range function
Automatically sets the measurement range to the
most appropriate range.
Displays [AUTO]
Manual-range function
To set the measurement range arbitrarily.
1.
Select the desired function with the rotary switch while
holding down
2.
Press
(Can set the range as desired, except during continuity
testing.)
Overflow indication
Indication when input exceeds the measurement range.
[OF]
Displays
EN-10
key.
key to switch the range.
[-OF]
or
[APS]
key.
to [OFF], and