3.3
TRAFFIC LIGHTS
Traffic lights are located at the entrance of the side panels on both panels.
These bi-color lights indicate if the archway is ready to control for passage.
•
The green light indicates “Walk”.
•
The red light indicates “Wait”.
*
This performance is achieved by a bi-color lamp under Control Unit at model
ThruScan
s3
.
3.4
ZONE(INDICATOR)- LIGHTS (*)
Zone (Indicator) Lights comprise by 2x6 distinct pinpoint light-
arrays and are located on the side panels of the exit side of
the WTMD. These lights indicate to identify the precise
location of a metal object within the WTMD archway whether
it is on the right, centre, left and/or top, middle, bottom of
the body(3 sides/3 levels).
(*)
ThruScan
s3 do not have this feature but Graphic
Zone Leds on control panel.
WARNING: In case of a power cut,
ThruScan
continues
operation with its internal power supply. Zone-lights
will shut down automatically to save energy after a
certain period of time during power failure. Graphic
Display on Control Panel will indicate the location of
threat zone.
3.5
VARIOUS ALARMS
Both the supervisor and the operator should be familiar with
the
ThruScan
’s audio & visual alarms.
The unit will generate an alarm condition to indicate that a
sufficient volume of metal (according to the program and
sensitivity settings) has been detected; Special built-in filtering
circuits help to suppress excess electronic noise signals from a
variety of sources, including X-ray monitors, horizontal synchronisation and closed-circuit
television/CCTV, etc..
Metal detectors sometimes generate false alarms, triggered by nearby metal objects or interference
from electrical or mechanical environmental noise from large motors, computers, fluorescent
lighting or other sources. The
ThruScan
’s infrared sensors are a feature that helps to minimise the
audible false alarms by ensuring that an alarm activates only if a person passes through the
archway.
A false source may trigger the alarm rarely such as a person pass and bump the archway also.
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