Fault condition: Isolator Board tap-off
System behavior
Open circuit
–
When end-of-line supervision is enabled on
the Isolator Board, a loop fault is reported
within the fault reporting time of
90 seconds.
–
The yellow LED indicator is lit on the
Isolator Board that has the open circuit.
–
Loss of audio in the affected tap-off.
–
After resolution of the fault, the fault
recovery time is < 100 seconds.
Short circuit
–
When short circuit detection is enabled on
the Isolator Board, the system reports a
loop fault within the fault reporting time of
90 seconds.
–
The yellow LED indicator is lit on the
Isolator Board that has the short circuit.
–
Interruption of audio within the fault
isolation time. Audio returns to all segments
and the unaffected tap-offs.
–
Loss of audio in the affected tap-off.
–
The system re-tests the loop every 20 to 40
seconds. This can lead to audible glitches in
the affected tap-off and in rare cases
audible glitches in the main loop during the
fault condition.
–
After resolution of the fault, the fault
recovery time is < 100 seconds.
Overload
–
Overload threshold can be set per Isolator
Board (10, 36 or 100 watts).
–
When audio is present that exceeds this
threshold level, the system reports a loop
fault within the fault reporting time of
90 seconds.
–
The yellow LED indicator is lit on the
Isolator Board that has the overload.
–
No Interruption of audio in segments and
unaffected tap-offs.
–
Loss of audio in the affected tap-off.
–
The system performs a loop recheck every
20 to 40 seconds. This may lead to audible
glitches in the affected tap-off and in rare
cases in the main loop while the fault
condition lasts.
–
After resolution of the fault, the fault
recovery time is < 100 seconds.
Loudspeakers Line Isolator System
System overview | en
15
Bosch Security Systems B.V.
Installation and Operation Manual
2014.03 | V1.1 |
