WinLink™ 1000 User Manual Release 1.9 R-1
Appendix R
External Alarms
Specification
External Alarms Specification
Each of the three products, IDU-E-AL, IDU-C and PoE-8 have a dry contact
alarm relay through a standard DB9 or DB25 pin female connector. There
are two alarm types – input and output.
Input alarms
The input alarms are raised by events from external equipment, such as
a fire warning, door open or air conditioner failure. They are user
defined.
Output alarms
Output alarms are generated through dry contact relays to indicate vari-
ous system events such as sync loss or disconnection. An alarm is raised
if at least one of the conditions in one of the tables below, is met.
IDU-C Alarms
Table R-1: IDU-C - Output Alarms Description
Alarm Description Alarm On Conditions Alarm Off Condition
Output 1 Air interface Alarm
• Link is down
• Link in installation mode
• Link authentication problem
Link is up or equipment alarm is ON
Output 2 Equipment Alarm
• Built in Test (BIT) error
• No connection to the ODU
Both ODU and IDU are in operational
state
Output 3 Service Alarm at Site B N/A Permanently off
Output 4 Power Failure at Site B Link Loss due to Power Failure at Site B
Link is up or down without power failure
indication within the last two seconds
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