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ION-B User Manual
TPRF
Alarm code
(TSUN description)
Alarm description
LED
Colour
Severity
Alarm
output**
Temperature Over-temperature Alarm - Warning 2
I2CBus alarm
Internal I2Cbus
communication
malfunctioning
Red Critical 1
Vcc
Power supply degradation,
with internal voltage falling
below critical threshold
Red Major 1
Summary Slot 1
The TPRF31 slot 1 is not
masked, in spite of not
hosting any card
Red Critical 1
Summary Slot 2
The TPRF31 slot 2 is not
masked, in spite of not
hosting any card
Red Critical 1
Auxiliary Input 1
The auxiliary input 1 is in
alert status *
Red Major 1
Auxiliary Input 2
The auxiliary input 2 is in
alert status*
- Minor 2
*(Default alert status is “Closed”, but can be set differently through TSUN Supervision unit)
** The “Alarm output” fi eld indicates the number of the External Alarm Output (Figures 4.2.7, Table 4.2.4) through which
the alarm information is revealed
Table 4.2.6 : Description of the alarm of the TPRF31 subrack
Once the TPRF31 sub-rack has been switched on, the system behaviour can be summarized
by the following steps:
• About 10sec after the TPRF31 sub-rack has been switched on, any TFLN modules housed
in the TPRN itself begins a “discovery” phase in order to identify and collect status of
the connected TFAx Remote Units. While the discovery phase is proceding (max. 4min.
depending on the system complexity) each TFLN general alarm (i.e., LED “ ”) blinks,
whereas the other TFLN LEDs go on showing the detected status.
Do not connect/disconnect any cable or piece of equipment until all TFLN modules have
fi nished the discovery phase. This may result in failing to identify the TFAx. Regardless,
during the discovery phase, the entire system continues to work correctly as the discovery
process aims to collect information about the TFAx without affecting basic system
functionalities.
• Once the discovery has fi nished, the general alarms (i.e. the LED “ ”) on each TFLN
panel stopsblinking and switch OFF (provided that the TFLN master optical TRX is not
affected by a general failure).
TPRF31 Troubleshooting
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