Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 38)

Operation Model 3500
Teledyne Analytical Instruments 24
There are 16 available keys on the membrane keyboard. They
include 2 function keys (SET and ESC), 2 direction keys for navigation
(<,>), 0-9 digit keys plus a decimal point for input, and a backspace key
(BKSP). They function as follows:
• “SET” is a function keystroke. Press it to enter sub menu or
confirm data input.
• “<” And “>” are direction keystrokes. They are used to move the
cursor.
• “ESC” is a function keystroke. Press it to exit the sub menu and
go back up the menu, or to cancel the input data.
• “0-9” are digit keystrokes. They are for number input.
• “.” is the decimal point.
• “BKSP” is the backspace keystroke. It is used to delete the last
input digit.
4.2 System Mode
During operation the Model 3500 Laser Analysis System can be in
three different modes.
• Start-up Mode
• Normal Mode
• Error Mode
4.2.1 Start-up Mode
When the power is turned on, the system will automatically invoke
the start-up mode. In this mode, the system initializes and performs the
self-test routine.
The first menu on LCD screen is the start-up menu and shows the
company logo and name, instrument model and name. See Figure 4.2.