Newton Security T-DAR T1000, Инструкция по установке и эксплуатации

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3
Critical Elements for a Successful T-DAR Installation
The T-DAR
®
system does a superb job of detecting violations of access control
security systems. In order to accomplish this task, the T-DAR requires several
critical elements and/or signals from the door and the access control system as
detailed in this manual. Four of the most important elements are:
1. Valid access grant signals must be immediate. The valid access signal
from the access control system must by occur at the same time or before the
door is unlocked to allow an entry and must have duration of at least 300 ms.
In some instances this may require the use of a timer module to allow for
adequate lock activation time
. In all circumstances, if a person crosses the
door threshold prior to the receipt of a valid access grant signal by the T-DAR
unit, that person will cause an alarm by the T-DAR system
. Especially in the
case of installations where multiple valid entries are allowed on a single door
open cycle, it is critical to confirm that the valid entry signal is reaching the T-
DAR unit prior to a person crossing the door plane and that a separate signal
for each valid entry is received by the T-DAR unit.
2.
Door contact/door position switch signals must be immediate. These
signals must be sent to the T-DAR unit at the same that the door is opened.
Unless it can be verified that the access control system can give immediate
door open signals, the T-DAR unit must have an independent circuit for this
function that allows isolation from the access control system. It is
recommended that mechanical switches of the roller and plunger types be
avoided in favor of magnetic switch door contacts.
3.
Adequate and consistent lighting are required for accurate operation of
the T-DAR system.
The T-DAR system uses stereo video analysis to
determine three-dimensional characteristics of targets and requires sufficient
lighting to perform this task. Equal and consistent lighting from the ceiling
down allows the system to identify and track targets in all areas of the
detection pattern. Lighting from the sides or the floor is not helpful; in fact it
may detract from system performance. If adequate down lighting is not
currently in place, additional lighting must be added. Invisible (near IR)
lighting is available from Newton.
4.
Event cameras on multi-door systems (T-2000) must be powered with ac
(alternating current).
This allows the independent video signals to be
synced. Failure to have synced video signals will result in distorted and
unusable event video replay clips. Single door systems (T-1000) may use DC
(direct current) powered event cameras.