5
Operation:
Four Button Interface
The EFM115 has four push buttons:
Power
(Red
) Ion Bal-
ance
(Blue)
Hold
(Yellow) and
Reset
(Orange). The but-
tons operate by pressing once lightly.
Note: Do not push the buttons with excessive force or
repeatedly. The effective life may be decreased by re-
peated misuse.
Press the
Power
button once and the unit will turn on in
"Static Field Meter" Mode. This is the default mode and will
be set to this every time the unit is turned on. The meter is
equipped with an auto-off feature to save battery power.
After 5 mins of inactivity, the unit will beep 5 times and turn
itself off. To resume operations, press the
Power
button
once. The auto-off feature can be disabled by pressing and
holding the
Power
button for at least three seconds when
powering on the meter. The EFM115 will beep once and the
display will read "A.OFF" to indicate the feature has been
disabled.
After the meter has been turned on, press the blue
Ion Bal-
ance
button once to switch into Ion Balance Mode. Refer to
section
Operation: Ion Balance
for more information.
The yellow
Hold
button will freeze the meter after it is
pressed once. The LED display will freeze the numerical
reading and the bar graph which allows the operator to read
the meter more easily and record data. To cancel "Hold