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Operation LXT-220 DO
Teledyne Analytical Instruments 24
3. With the cursor on a user selectable menu item, for instance
SETUP in the Parameter Selection Menu, pressing both
horizontal CALIBRATE keys will take you to the next lower
level of screens: 4-20 mA screen, Relay Setup screen, etc.
4. The vertical CALIBRATE keys are used to perform numeric
adjustments to displayed values. To use these keys, the LXT-
220 must be in the calibrate mode. Pressing the upper (▲)
CALIBRATE key will increase the value; pressing the lower
(▼) CALIBRATE key will decrease the value.
To exit the calibrate mode, press either of the MENU SELECTION
keys.
3.2 Menus
The LXT-220 contains a series of menus and submenus from which
different functions can be accessed. Even though the display only shows
4 menus per screen, you can scroll through all available menus by using
the MENU SELECT ▲ and ▼ keys.
The menus available in the standard LXT-220 instrument
configured for single channel dissolved oxygen controllers are shown in
Figure 3-1.
When the instrument is first powered up, a copyright display will
appear for a few seconds. This screen displays the serial number and
software version for your instrument. After a few seconds the display
changes to the main menu. From the main menu, you can scroll up (▲)
to the contrast menu or down (▼) through the available menus for your
controller.
Some menus allow you to choose from several options. To select
an option or item, scroll to the option using the MENU SELECT ▲/▼
keys. When the cursor is next to the item of interest select the item by
simultaneously pressing both the left and right (◄/►) CALIBRATE
arrow keys on the right side of the front panel.
S/N 1004 V 1.00
(C)TI/TAI 2002
Copyright Display