American Fibertek N-TAH - Manual (Page 17)

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for a set period of time, sending a TCP message over the network to a user-defined
destination, or sending an alarm email to a user-supplied address
This feature permits the N-TAH to monitor an external piece of network-connected
equipment, and on detection of a failure trigger an alarm, notify a technician, or power-
cycle an external device through a relay.
Pilot interface
The N-TAH is intended to communicate over the network with up to four Pilot server
devices. The user will provide an address and port number for each of the Pilot servers
he wishes the N-TAH to communicate with. The N-TAH will automatically attempt to
connect to Pilot servers when a valid IP address and port number have been provided.
Once connected to a Pilot server, the N-TAH will send updates of the status of all alarm
inputs and aux outputs, along with the latest readings from all the embedded
environmental sensors (temperature, relative airflow, and humidity), to each Pilot server
every 5 seconds. It will also send immediate updates every time an alarm input or aux
output changes state, or when a probe reading exceeds warning or alarm thresholds.
These messages can trigger events in the Pilot VMS software.
Environmental Sensors
The N-TAH monitors temperature, relative airflow, and relative humity of the
environment where the unit is located. The airflow and temperature sensors are located
in the black shroud which extends from the right side of the unit and which should be
exposed to the airflow being measured.
The N-TAH will measure the environmental conditions and take a new set of readings
every ten seconds. The latest readings will be displayed on the web page, and
forwarded to any connected Pilot servers. If any of the readings are outside the set
warning or alarm levels, the N-TAH can take several programmed actions:
1. Setting an aux contact output on the N-TAH for a set period of time.
2. Sending an alarm email to a user-supplied address.
3. Notify any connected Pilot servers of the alarm condition.