LaMotte SMART 3 Electronic Soil Lab - Manual (Page 16)

16 SMART3 Soil 1.11
GENERAL OPERATING PROCEDURES
The operation of the SMART3 Colorimeter is controlled by a microprocessor.
The microprocessor is programmed with menu driven software. A menu is
a list of choices. This allows a selection of various tasks for the colorimeter
to perform, such as, scan blank, scan sample, and edit test sequences. The
keypad is used to make menu selections which are viewed in the display. There
are three selections accessible from the Main Menu: Testing Menu, Editing
Menu and Run PC Link.
THE KEYPAD 
The keypad has 6 buttons which are used to perform specific tasks.
This button will scroll up through a list of menu selections.
ENTER
The button is used to select choices in a menu viewed in
the display.
This button controls the backlight on the display.
This button will scroll down through a list of menu
selections.
EXIT
This button exits to the previous menu.
This button turns the meter on or off.
EXIT
ENTER
SAMPLE HOLDERS 
The sample chamber is designed for 25 mm round
tubes. An adapter to hold 16 mm COD tubes and 1 cm
square UDV cuvettes is included.
Position the COD/UDV Adapter (Code 1724) so that
the notches in the adapter fit around the posts on
the chamber. Turn the adapter counterclockwise until
the arrows are at the top and bottom of the chamber
and the adapter is locked into place. Turn the adapter
clockwise to unlock the adapter and remove it from the chamber.