Making External Alarm Connections; Connecting An External Alarm; Figure 31 External Alarms Connector - Alcatel-Lucent 7705 Installation Manual

Making External Alarm Connections

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
Alarms Port
Figure 31
1
Link Link
Act Act
Hardware required:
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
Step 2. Attach each alarm device to the customized end of the external alarm cable (either
Step 3. Attach the HD-15 male connector end of the cable to the router.
128
for more information on the External Alarms port.
shows the location of the External Alarms connector.
Figure 31: External Alarms Connector
7705 SAR-M
1
Stat
2 3 4 5 6 7
Link Act Link Act Link Act
Link Link
Act Act
2
• appropriate shielded cable with an HD-15 male connector at the router end and a
customized connector at the external device(s) end
provided in External Alarms Port
directly or through a distribution device).
T1/E1 Ports
3 5 7 9 11 13 15
Stat Stat Stat Stat Stat Stat Stat
Crit.
Maj.
Min.
Stat
ACO/
16 LT
Pinouts.
7705 SAR-M Chassis Installation Guide
External Alarms
-48/+24 VDC
+Batt A -Batt A +Batt B -Batt B
Mgmt
Lnk Act
Sync Out
BATT A
BATT B
In External Alarms
Console Sync ToD Max, 50 mA
External
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