Alcatel-Lucent 7705 - CSM Connectors and LEDs

Making External Alarm Connections
128 7705 SAR-M Chassis Installation Guide
Making External Alarm Connections
The 7705 SAR-M provides an HD-15 female connector for external alarm connections. The
input and output ratings are 5 VDC and 100 mA (source or sink).
The External Alarms interfaces are equipped with relays that can be used to trigger external
alarm indicators. They also provide inputs that can be used to trigger the generation of alarms
on the 7705 SAR-M to indicate environmental or external alarm conditions. Refer to External
Alarms Port for more information on the External Alarms port.
Figure 31 shows the location of the External Alarms connector.
Figure 31: External Alarms Connector
Hardware required:
• appropriate shielded cable with an HD-15 male connector at the router end and a
customized connector at the external device(s) end
Shielded cable must be used to maintain EMC compliance.
Connecting an External Alarm
To connect an external alarm to the router:
Step 1. Design the external alarm circuitry using the input and output pin assignments
provided in External Alarms Port Pinouts.
Step 2. Attach each alarm device to the customized end of the external alarm cable (either
directly or through a distribution device).
Step 3. Attach the HD-15 male connector end of the cable to the router.
Crit.
7705 SAR-M
Maj.
Min.
Stat
ACO/
LT
External Alarms
Max, 50 mA
-48/+24 VDC
Mgmt
To D
Lnk Act
Sync In
Sync Out
1
T1/E1 Ports
Stat
3
Stat
5
Stat
7
Stat
9
Stat
11
Stat
13
Stat
15
Stat
2 16
BATT A
BATT B
+Batt A -Batt A +Batt B -Batt B
Console
Link
Act
7
Link
Act
6
Link
Act
5
4321
Link
Act
Link
Act
Link
Act
Link
Act
21112
External Alarms