Product specifications

Alarm Handling
The Alarm Input Controller menu is used to program the tremendously flexible
alarm processing features of the SurveyorVFT. This device can intelligently process
and respond to alarms without the need of an external CPU or controller. Many
standalone applications can be built around the processing capability of the
SurveyorVFT.
For example, a single unit could be placed in the vestibule of a building. Using the
built-in features, the following scenario is easily accomplished. A person walks into
the vestibule from the outside. A door contact on that door triggers the
SurveyorVFT to take a picture of the person. At the same time, a relay driver
completes a circuit, which locks the inner door, preventing open egress. Once in the
vestibule, a motion detector connected to the dome senses that the person has
moved over to the intercom and turns a brighter light on in the vestibule. The dome
moves over to a shot of the intercom, allowing us to clearly see which call button is
pressed.
When the outside door is fully closed, the buzzer is enabled to allow passage from
the vestibule into the building. All activity has been taped on an event driven VCR,
also triggered by the dome. In the event that a “panic button” is pressed, an auto-
dialer could also be connected to call the police. This illustrates how a single dome
can do the work of several systems in a standalone application.
The first option on the Alarm Input Controller menu, Enable/Disable Input,
determines whether the 4 alarms are active. These alarms may all be turned on and
off individually, useful when a single alarm is malfunctioning, a door is propped
open, or an alarm event is only required on certain dates and times.
Report Enable is a function that allows the user to determine whether local alarms
are processed, and resolved, at the dome, switcher, or both. In the example of the
vestibule, if the “panic button” were connected to a larger system, we could have it
report directly to the CPU and have that camera display on a selected monitor.
Since the door opening is an occurrence that happens all day long, we do not
necessarily want the operator to intervene each time it happens.
The Active Alarm State menu chooses how individual alarm inputs respond when
contact closures are made (high) or broken (low) (in essence, normally open or
normally closed).
14 XX134-40-00 Rev 104 SurveyorVFT Camera Dome Programming