palintest Green Drop Kit Instructions Manual page 7

4.1.2 Operating Modes
The photometer has two distinct operating modes -
the PHOTOMETER mode and the SYSTEM mode.
The PHOTOMETER mode is the normal operating
mode for taking photometer readings. This mode is
engaged automatically when the instrument is
turned on by pressing the key.
In order to conserve battery life the photometer will
switch off automatically after use. The switch off
period is five minutes in normal use, but may be
adjusted in System mode.
The SYSTEM mode is used to set the system
options. This mode is engaged when the
photometer is turned on using the key and then
 
selecting 'System' using the and keys and
pressing [OK].
Scroll through the menu box to view all the options
available.