40 — Delta OPSU/BBU unit data sheet
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 40-5
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
Table 40-3 BBU user controls
Note
(1)
This operating mode is reserved for emergency use only and will shorten the life of the backup
battery if used excessively.
40.6 Alarms
The BBU is equipped with intelligent internal diagnostics that provide power supply
alarm information. Open collector opto-coupled transistors isolate the alarm signals,
which are present on the 7-pin power and alarm connector. The service provider can
monitor these alarm signals to isolate problems and take corrective action.
Table 40-4 describes the BBU alarms and identifies the power and alarm connector
pins; see Figure 40-2.
Figure 40-2 BBU power and alarm connections
Name Type Description
ALARM SILENCE Push button Audible alarms are silenced for 24 hours.
BATTERY
EMERGENCY USE
Push button The remaining 50% battery power will be used.
(1)
Vo +
Vo -
SIGNAL
RETURN
48V
ON BATTERY
REPLACE
BATTERY
BATTERY
MISSING
LOW BATTERY
+-
Power and
alarm connection
OPSU to BBU and
power connector
1904
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