USER MANUAL FOR RA-5J00 III3
ENU STATUS : 1-0-0
Copyright - refer to title page
Page 37
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.
EXT_ALM1
GND
NC
1
3
2
4
5
6
7
NC
EXT_ALM2
NC
NC
Figure 40: Pins Allocation for
“EXT_ALM” Port for RU
Table 7:
Pin Definition of “EXT_ALM” Port for RU
Pin number
1
2
3
4
5
6
7
Alarm
definition
EXT.
Alarm 1
EXT.
Alarm 2
Reserved
GND
Reserved
Reserved
Reserved
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.
1
2
4
3
5
6
7
9
8
BTS_OPEN
BTS_CLOSE
BTS_ COM
Figure 41: Pins Allocation for
“BTS_ALM” Port
Table 8
: Pin Definition of “BTS_ALM” Port
Pin Number
Definition
Description
1
BTS_OPEN
Connects to the open terminal of the voltage free relay.
2
BTS_COM
Connects to the common terminal of the voltage free relay.
3
BTS_CLOSE
Connects to the close terminal of the voltage free relay.
4 ~ 9
NC
Reserved.
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‟.
