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Structure and function
5
Setup
31
Building Technologies
008250_i_en_--
Fire Safety
2013-08-15
5.2.3
LED indication
The LEDs indicate the operating condition of the FDUL221 line tester.
Element
Description
Function
LED red
Flashes slowly Error when starting up the FDUL221 line tester
LED red
Flashes rapidly Connection to PC, e.g. download
LED green Flashes weakly Normal operation
LED green Flashes brightly Reading in the line topology
LED green Lit up
buttons pressed
LED green Flashes rapidly Connection to PC, e.g. download
See also
5.2.4
Button assignment
Different functions are assigned to the command buttons.
Symbol
Button Function
Up
Upward movement between and within the menus
Movement to the right within a function, e.g. in Device Info or in
LCD Setup
Down
Downward movement between and within the menus
Movement to the left within a function, e.g. in Device Info or in
LCD Setup
OK
Confirming a selection, e.g. entering a menu or a function
Starting a procedure, e.g. activating tests
Activating a function, e.g. switching relays, sounds and alarm
indicators
Exit
Quitting a function or a menu
Cancelling a procedure
Starting in configuration mode (together with the 'on/off' switch)