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5.4 Function
5.4.1
5.4.2
Building Technologies
Fire Safety
The functions of the FDUL221 line tester are divided into two independent modes.
Topology
This mode shows all information relating to the connected detector line [
Configuration
This mode shows all information and settings for the FDUL221 line tester.
Power supply
The FDUL221 line tester can be operated via a power unit or with batteries.
Mains operation
The batteries may be inserted during mains operation.
For mains operation, connect the FDUL221-B power unit to the
external power supply.
The mains operation is shown as a symbol in the display when the FDUL221 is
switched on.
Mains operation
Battery operation
For battery operation, insert two batteries into the battery compartment. Ensure
they are inserted correctly. [
In the case of battery operation, the charge state of the partially discharged
batteries is shown.
Charge state of the partially discharged batteries
User language
The FDUL221 line tester can be operated with different user languages. To change
the user language, the desired language must be selected during a firmware
update. You will find more information in chapter 'Firmware update [
Structure and function
67]
5
Function
38].
socket for
69]'.
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2013-08-15
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