Maintenance Guide

Cobham Wireless
idDAS Installation and Maintenance Guide 00109GU Rev. 2.0
Page | 53
MSDH PS NFPA Output Alarm 4.4.4
idDAS PS MSDH supports one General alarm relay that is triggered if any of the MSDH alarms are activated.
The alarm status is reflected by the General indicator in the Master MSDH window – see Figure 4-11.
The user may choose to disengage specific alarms from the relay as described in Section 4.4.4.2.
NOTE: For the part numbers of the relevant MSDH units, refer to Section
8.1.2.2.
4.4.4.1 MSDH Relay Connections
The MSDH relay is implemented by a 4-pin circular Binder-type external connector located on the MSDH rear
panel.
To connect the alarm
1. Use the alarms cable provided in the accessories kit (Section 4.2.4).
Figure 4-9 MSDH Public Safety Output Alarm Connections
2. Connect the wires to the output source as normally open or normally closed, according to the pinout
table below.
PIN
SIGNAL NAME
DESCRIPTION
1
General Alarm Common
Red
2
General Alarm Normally Open
Green
3
General Alarm Normally Closed
White
N/A
----
Black
NOTE: No additional activation or configuration operations are required unless you wish to disengage
any of the alarms from the relay.
4-pin Output Alarm
Socket