Pra-Lim (Fim) - Bosch PRAESENSA Installation Manual

26 en | Troubleshooting
Possible solution
To find double twists in your installation, please use the FIM tracking feature of loudspeaker
line isolator Sniffer PC application. FIM tracking allows you to automatically count the number
of FIM modules on the loop. Find more details in the Sniffer manual on
www.boschsecurity.com.
6.2

PRA-LIM (FIM)

Next step after identifying a fault on LDB is to investigate and fix the cabling in the field.
Indication on FIM will help you finding the exact location and type of the fault.
Notice!
i
Multiple faults can be shown on FIM at the same time. In this case different fault indications
will be superimposed, creating combined indication. FIM can be reset only if all faults are
removed and all indications are in "memory" state.
If fault indications on FIM are in "memory" state (slow orange blinking), simply push RESET
button on FIM (or send REMOTE FIM RESET command from LDB) and after reboot FIM will
return to QUIESCENT mode.
The following chapters relates to situations where there is an active fault indicated. More
details you'll find in FIM indications table. See PRA-LIM (FIM) Indicators, buttons and
connections, page 11 .
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2021.07.28 | V1.00 |
Short loop, page 27
Short on T-Branch, page 28
Open T-Branch, page 29
Installation manual
Loudspeaker line isolator system
Bosch Security Systems B.V.