1300 000 734

Channel Alarm Module (option for ASM)


The Channel Alarm Module (CAM) is an option for the Antenna System Monitor (ASM) that provides ten alarm relays outputs for assignment to individual channels being monitored by the ASM. Up to ten CAM units may be conveniently connected onto one ASM unit. Note : The Channel Alarm Module is now declared End-Of-Life, and is directly interchangeable with, and superceded by, the Site Alarm Module (SAM)

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The Channel Alarm Module (CAM) is an optional module that may be used with the Antenna System Monitor (ASM) to allocate a dedicated alarm output for up to ten (10) channels of the channels being monitored by the ASM. Additional CAM’s can be easily added (daisy-chained) to increase the number of monitored channels with dedicated alarm outputs. The respective ASM will auto-detect the CAM module when connected and through the GUI (Graphical User Interface) of the ASM. The user can configure which of the CAM outputs are assigned to respective ASM monitored channels. Conditional alarm status is a feature that allows the individual base station PTT lines to be compared with the ASM channel alarm status, allowing a “no RF output” from the base station to be recognised and inhibit an alarm. Four (4) additional “general purpose” digital alarm inputs are available on each CAM to monitor site alarms - such as site access doors, battery threshold levels and site conditions. Front and rear LED’s provide a visual indication of the status of all 10 output and 4 input alarms.


-User-assigned 10 Channel alarm relay outputs

-Auto detected (plug’n’play) when connected to ASM

-Conditional PTT input status monitoring capability

-Compact 1RU 19” rack mountable shelf

-Expandable - up to 10 CAM’s may be connected to one ASM

-Enabling priority alarm reporting, providing a trigger as a Hot/Standby base station radio switch

-4 additional, user configurable, general purpose logic alarm inputs

-Power and comms interfaces daisy chained from ASM

-Front and rear alarm relay activation notification LED’s
No. of Alarm Outputs Ten (10)
Alarm Contact Type Dry Relay NO/CMN/NC
Alarm Contact Rating 50VDC 1A
Alarm Input Logic “0” = <2.5VDC / “1” = >2.5VDC
Alarm Inputs Ten (10 configurable – one per alarm output / Four (4) configurable – general purpose digital input
Power Supply 11-36VDC or 36-60VDC (powered from ASM)
Visual alarm notification Front and Rear panel mounted LEDs
Mounting 1RU 19” rack mounting
Dimensions W 483 x H 43 x D 77mm / W 19 x H 1.75 x D 3”

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