1.9
Alarm icon
This icon is displayed if any of the user defined alarm levels are triggered. If this icon
is displayed then the nature of the alarm may be found from the user interface ( see
section 6.2 ’Displaying alarms present’ ).
Warm Up icon
This icon is displayed if any of the transducers fitted inside of the xentra are operating
at a temperature less than their normal operating temperature band. This is normally
displayed when the instrument is turned on. If any of the transducers fails to achieve
its normal temperature operating conditions within a specified time then the warm up
icon will be turned off and a fault icon raised.
Fault icon
This icon is displayed if a fault condition is identified within the analyser. The cause of
the fault may be identified from the user interface ( see section 6.2 ’Displaying faults
present’ ).
1.5.4 The xentra menu display
To initiate any user interface menu operation the ’MENU’ key should be pressed. The
xentra will then present the top level menu, which in turn leads on to other menus. A
tree showing the menu structure in its entirety is given in appendix A.
At each menu the user highlights the desired option using the arrow keys(> ? = <) and
then presses the ’ENTER’ key. Reverse video is used to highlight the selected menu
option. Pressing the ’MEASURE’ key at any time returns to the measurement display.
The ’EDIT’ key is used as a short cut key. Pressing the ’EDIT’ key will give immediate
access to the edit functions provided to modify the text on the measurement display.
This includes the names of measured variables and the measurement units.
During any user interface operation, the fundamental measurements are still being
made by the xentra and all relevant outputs, alarms and diagnostics remain active.
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