Error Handling - Agilent Technologies 990 User Manual

9 Errors

Error Handling

Error Handling
During operation, a series of events and error messages are generated indicating the start or
finishing of certain actions and procedures as well as smaller and fatal errors somewhere in the
instrument. This section describes how the Micro GC reacts to these events or messages.
The following error classes as well as the subsequent actions are available:
Class 0 Internal info: These are events indicating a certain procedure has started or finished. In
no way do they influence the proper functioning of the instrument.
Class 1 Advisory warning; the instrument continues: These are the less critical advisory warnings
not requiring immediate action by the user. The ongoing run may be minimally affected by it and
thus need not be stopped. Class 1 error messages indicate certain malfunctions of the
instrument. Some errors of this type keep the instrument from becoming ready.
Class 2 Recoverable errors for logging; instrument shutdown, red LED ON: These are recoverable
errors for which the user needs immediate warning (a popup or warning may appear in the data
system and the red LED lights). The run in progress is stopped since its results will definitely be
wrong. Corrective action by the user or instrument service may be required. This kind of error can
be cleared without power cycle.
Class 3 Critical errors for logging; instrument shutdown, red LED ON: These are critical errors for
which the user needs immediate warning. The red LED lights. An instrument shutdown occurs.
Corrective action by the user or service is required. This kind of error can only be cleared with a
power cycle.
Class 4 Fatal errors for logging; instrument shutdown, red LED ON, Auto Reboot: These are fatal
errors for which the user needs immediate warning. The red LED lights. An instrument shutdown
and auto reboot occur.
All errors, regardless of class, are available to the data system under instrument status (for
troubleshooting). All Class 1 and higher errors are also logged in the instrument's flash memory.
All errors are identified by numbers built from the error class and a number. Events are not
numbered.
128 Agilent 990 Micro GC User Manual