Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 71)

Laser Gas Analyzer Operation
Teledyne Analytical Instruments 57
4.3.7 Additional Menus
Three additional screens exist which are automatically invoked
depending on the status of the instrument. These are: Message Code,
Password Input, and Protection Mode Menu.
4.3.7.1 M ESSAGE C ODE :
Whenever there is an error, warning, or alarm, the system
automatically switches to MainMenu in graphics mode, and the
corresponding alarm icon and alarm code appear on the menu See
Figure 4.37. The specific message codes are listed in section 5.3.
The icon is displayed when a warning or concentration alarm.
Is triggered
The icon is used for an error.
For alarms represented by (warning or concentration alarm),
the symbol disappears automatically when the alarm is cleared, and the
alarm code changes to “Normal”. The alarm relay, however, does not go
back to the “Close” state right away (see Automatic Restoration, Clear
Alarm Button).
Figure 4.37 Message code interface