FSA-PLUS Switcher (Modem Version)
Technical Manual
6341 3 103-12 - 17.05.2011
Page 11
5
Monitoring and Alarms
The FSA-PLUS Switcher provides extensive options for monitoring as well as the
alarms resulting from this, independent of the configuration.
5.1 Monitoring and Alarms in Double Mode
In double mode, the monitoring and signalling of alarms for the central and exter-
nal FSA-PLUS Switcher is different, since only the central FSA-PLUS Switcher
receives all the information from the complete system (both FSA-PLUS Switch-
ers). The signalling in the case of the external FSA-PLUS Switcher is limited to its
own status and its own alarms.
5.1.1 Monitoring and Signalling of FSA-PLUS Switcher (Central or External
FSA-PLUS Switcher)
Signalling of switch status
Signalling of operating conditions (auto / manual operation)
Monitoring of all moving cards by means of cyclic write / read operations and
alarm in the event of failure
Recognition of the number of moving cards
Comparison of the number of moving cards (double mode only)
Alarm in the event of failure of an internal voltage
Alarm in the event of failure of the primary supply voltage (DC version only)
Monitoring of the modem connection
Alarm in the event of failure of the modem connection
Monitoring and signalling of the interface for the measurement of the line. In the
case of operation with automatic reverse switching, there is an alarm in addition
to the signalling.
5.1.2 Additional Monitoring and Signalling of the Central FSA-PLUS
Switcher
The central FSA-PLUS Switcher monitors the whole system, i.e. it monitors both
FSA-PLUS Switchers according to the criteria cited in section 5.1.1.
In addition, there is a specifically targeted alarm with details of the alarm as well
as the alarm source which is effected by the central FSA-PLUS Switcher.
In the event of failure of the primary supply voltage (DC version only) or an operat-
ing voltage of the external FSA-PLUS Switcher, this failure leads to a specifically
targeted urgent alarm in the FSA-PLUS Switcher.
