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o open
power feed out of defined window
or PLL-Alarm
or Temp.-Alarm
o close
normal operation condition
Output3: This optocoupler output, which is signalling
the ALC condition, represents the same
functionality as LED2.
Collector-emitter voltage......50 V max.
Collector current..................20 mA max
o open
: ALC-Alarm, ALC active
o close
: normal operation condition
13. Application
In the following two possible supervision applications
are sketched. With the knowledge of the physical and
logical behaviour of the alarming interface (more
details can be derived from the data sheet of the
according miniRepeater) there are a lot more different
applications to suit the individual networks.
13.1.
Repeater Supervision via SMS Transmitter
In this setup, a GSM-based SMS transmitter is
attached to every single miniRepeater. The box
provided includes a GSM modem, an SMS generator
and power supply unit. This box is connected via a
six-wire
interface
to
configuring the SMS transmitter (keeping the default
values is also possible), the miniRepeater has to be
added in the OMC (via ID No or phone number of the
SIM-card in the modem) and it will be integrated into
the supervision network. For further information,
please refer to the SMS transmitter manual.
miniRepeater
Heartbeat
(output1)
HW Alarm (output2)
ALC Alarm
(output3)
Supervision via SMS transmitter
M0041AFM.doc
the
miniRepeater.
SMS Transmitter
S
M
GSM-
S
MODEM
G
e
n
e
r
a
t
o
PSU
r
13.2.
Repeater Supervision via Party-Line
In this setup, several miniRepeaters are connected to
a three-wire party-line representing a Wired-OR
functionality
miniRepeaters. If it is not required to distinguish
between the two alarm types, a single two-wire
connection is sufficient. Do not exceed summary
voltage and current limits as stated in chapter 11
Alarming and Supervision.
miniRepeater
Heartbeat
HW
(
t
t2)
ALC Alarm
miniRepeater
Heartbeat
HW
(output2)
ALC Alarm
Party-line supervision without SMS transmitter
13.3.
Repeater Supervision via Party Line and
SMS Transmitter
In this setup, several miniRepeaters are connected to
After
a three-wire party line, representing a Wired-OR
functionality
miniRepeaters. If it is not required to distinguish
between the two alarm types, a single two-wire
connection is sufficient. The two or three-wire party
line is connected to the AUX connector of the SMS
Transmitter. Do not exceed summary voltage and
current limits as stated in chapter 11 Alarming and
Supervision. For further information, please refer to
the SMS transmitter manual.
Party-line supervision with SMS transmitter
of
the
alarms
of
miniRepeater
(output1)
Heartbeat
HW
Alarm
(output2)
(output3)
ALC Alarm
miniRepeater
(output1)
Heartbeat
Alarm
HW
(output2)
ALC Alarm
(output3)
HW
ALC
Alarm
Alarm
of
the
alarms
of
a
group
of
(output1)
Alarm
(output3)
(output1)
Alarm
(output3)
Summary
Alarm
a
group
of
Page 7
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