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Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 29
STANDBY. It is important to read and understand the MENU
STRUCTURE section to fully understand navigation and data entry.
4.2.2.1
ARROW KEYS
Pressing the ARROW KEYS select menus and modifies values.
1. Item Selection Menus are identified by the flashing arrow
on the left. In Item Selection Menus the UP/DOWN arrow
keys move to the next lower or upper item.
2. Item Modification Menus are identified by a flashing
parameter/descriptor. In Item Modification Menus, the
UP/DOWN arrow keys increment or decrement numeric
values or toggle ON/OFF, YES/NO, or ENABLE/DISABLE
type values.
4.2.2.2 ENTER
The ENTER key is used in several context-sensitive ways.
1. In an Item Selection Menu the ENTER key selects the line
indicated by the arrow, and enters the Item Modification
Menu.
2. In an Item Modification Menu the ENTER key accepts the
displayed value as the new parameter and returns to the Item
Selection Menu.
4.2.2.3 ESCAPE
The ESCAPE key is used in several context-sensitive ways.
1. In an Item Selection Menu the ESCAPE key restores the
next higher Item Selection Menu in the hierarchy of menus
(with the Analyze Mode as the final, highest screen
available).
2. In an Item Modification Menu the ESCAPE key returns to
the Item Selection Menu and restores the original value of
the parameter (discarding the displayed/modified value).
3. In sequential operations such as the Password Entry
Routine the ESCAPE key restores the original value of the
parameter and backs up to the previous letter or operation in
the sequence.