User's Manual

RADWIN 1000/2000 User Manual Version 2.12 G-1
Appendix G
External Alarms
Specification
External Alarms Specification
The IDU-C supports external input and output alarms through a standard
DB25 pin female connector.
Input alarms
The input alarms are raised by events from external equipment, such as
a fire warning, door open or air conditioner failure.
Output alarms
Output alarms are generated through dry contact relays to indicate vari-
ous system events according to the following table. An alarm is raised if
at least one of the conditions is met.
Table G-1: Output Alarms Pinout
Alarm Description Alarm On Conditions Alarm Off Condition
Output 1
Air interface Alarm
•Link is down
• Link in installation mode
• Link authentication prob-
lem
Link is up
Output 2
Equipment Alarm
• Built in Test (BIT) error
• No connection to the ODU
• Incompatible software
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 with-
out power failure indica-
tion within the last two
seconds