F3000
EN - 7
4.2.
DESCRIPTION OF FUNCTIONS KEYS
4.2.1.
/HOLD key
The multifunction /
HOLD
key allows the herefollowed operations:
A long pressure (2s) allows to switch on/off the instrument. After switch on, a quick
autotest relative to the battery level charging is performed and the “FULL” message is
displayed with completely charged batteries. With symbol “
” replace the batteries
(see § 5.2)
With instrument switched on, the key allows to activate/deactivate the
HOLD
feature in
way to fix the result of the measured value at display. The “HOLD” symbol is shown
4.2.2. Backlight
key
Press the
key for the backlight activation/deactivation. This light could help the operator
reading the display while he’s measuring in dark sites
4.2.3. Disabling the Auto Power OFF function
In order to preserve internal batteries, the instrument switches automatically off
approximately 20 minutes after it was last used. No symbol appears on the display when
this function is active. When the instrument must be used for long periods of time, it may
be useful to deactivate the Auto Power Off function as follows:
Switch off the instrument with the /
HOLD
key
Switch on the instrument by press and hold the /
HOLD
key for at least 2s
With “FULL” message at display press the key. The “
AoFF
” message is shown at
display to indicate the disabling of the function
Switch off and on the instrument to automatically enable the feature
