5
Structure and function
Setup
28
Building Technologies
008250_i_en_--
Fire Safety
2013-08-15
5.2
Setup
The FDUL221 line tester is built in a plastic housing. The power is supplied by
batteries or with the FDUL221-B power unit.
Setup
Item
Symbol/
Element
Description
Function
1
Display
Adjustable backlight and contrast
Scrolling plain text and symbol display
2
LED red
Flashes slowly in the event of an error during startup
Flashes rapidly when PC is connected
3
LED green
Flashes faintly during normal operation
Flashes brightly when reading in the line topology or
when PC is connected
Lights up when scrolling
4
Up/down buttons
Scrolling (up/down) between and within the menus
Scrolling (right/left) within a function, e.g. in Device
Info or in LCD Setup
5
OK button
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
6
Exit button
Quitting a function or a menu
Cancelling a procedure
Starting the 'Configuration' menu tree (together with
the 'on/off' switch)
7
B (+) red
B (-) black
Connection for line end for a loop
8
A (+) red
A (-) black
Connection for line start for a loop/stub and for a single
line device