External Alarm Connection; Bts Alarm Connection - Comba Telecom RA-5300 User Manual

3.5.3 EXTERNAL ALARM CONNECTION

For RU, this is a 7-pin CPC connector. The following figure and table show the pin allocation and
definition. Pin numbering are shown looking-into the connector on the enclosure.
Pin number 1
Alarm EXT.
definition Alarm 1

3.5.4 BTS ALARM CONNECTION

The equipment alarms can be signaled to the BTS via voltage-free relay contacts. The voltage-free relay
connections are connected to the DB-9 port "BTS_ALAM" located on the MU. The following figure and
table shows the pin allocation and definition.
Pin Number Definition
1 BTS_OPEN
2 BTS_COM
3 BTS_CLOSE
4 ~ 9
Depending on OMT/OMC configuration, alarm to BTS can be signalled equipment by either: a) pin1 and
pin2 „open‟ or b) Pin2 and Pin3 „close‟.
ENU STATUS : 1-0-1
USER MANUAL FOR RA-5300 III3
EXT_ALM1
NC
3
6
NC
Figure 48: Pins Allocation for "EXT_ALM" Port for RU
Table 9: Pin Definition of "EXT_ALM" Port for RU
2 3
EXT.
Reserved
Alarm 2
1
BTS_OPEN
2
BTS_ COM
3
BTS_CLOSE
4
5
Figure 49: Pins Allocation for "BTS_ALM" Port
Table 10: Pin Definition of "BTS_ALM" Port
Connects to the open terminal of the voltage free relay.
Connects to the common terminal of the voltage free relay.
Connects to the close terminal of the voltage free relay.
NC Reserved.
Copyright - refer to title page
EXT_ALM2
1 2
NC
4 5
7
NC
GND
4 5
GND Reserved
6
7
8
9
Description
6 7
Reserved Reserved
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