User manual

10.16 NUISANCE ALARMS

Any metal detector will occasionally register what is called a “nuisance alarm,” triggered by electri-

cal or mechanical noise from the environment. On most walk-through detectors such an alarm can

sound when a person carrying no detectable metal is passing through the archway, or even when

nobody is passing through. Audible nuisance alarms are minimized by the IR Sensor. This sensor

requires that a person must be passing through the unit for any alarm to sound. Because the IR

Sensor can be turned off by a supervisor, operators should always know whether it is functioning or

not.

It is important to remember that after power has been turned on, the CS 5000 is

operating at all times. Its IR Sensor capability inhibits the alarm only when there is no object or per-

son within the archway.

No detector, however, is immune from nuisance alarms caused primarily by electrical

disturbances from large motors, computers, fluorescent lighting or many other sources. An operator

should not be overly concerned about nuisance alarms, but should accept that they can happen and

be ready for them. Of course, it will be necessary to retest any person passing through the detector

when a nuisance alarm is believed to have sounded.

Because of the high level of design quality represented by the CS 5000 and its IR

Sensor, it can be expected to produce relatively few “nuisance alarms” when installed properly.

Nevertheless, operators should always follow instructions from supervisors about reporting them.

On rare occasions a nuisance source might trigger the alarm just as someone is passing through

the detector. An operator should never try to guess about the source of such an alarm, and it should

never be assumed that the alarm is a nuisance. There have been occasions when an individual

would intentionally bump against a detector while passing through it and try to blame an alarm on

the bump.

If an alarm sounds for any reason while a person is passing through the archway, that person must

be asked to walk through the unit again and/or be examined for metallic objects with a hand-held

detector.

There will be no exceptions.

10.17 TAMPER ALARM

Whenever the ACCESS touchpad is pressed, the detector will begin “beeping” for about ten (10)

seconds or until a four-digit numerical access code is entered with the touchpads. During these ten

(10) seconds, the detector will sound an alarm if any person or object passes through the archway.

When less than four touchpads are pressed or if no attempt is made to enter a code within ten (10)

seconds, the detector will return to normal operation. After the ACCESS touchpad is pressed, if an

unauthorized four-touchpad code is entered, an audible Tamper Alarm will sound three loud “beeps.”

The detector will then return to normal operation.

Any attempt at access to the detector’s controls will also be indicated by an increase in the

SEQUENCE code as reported on the LCD display. Any unauthorized attempt at access that acti-

vates the Tamper Alarm will be indicated by this symbol (*) adjacent to the SEQUENCE code num-

ber. If the Tamper Alarm ever sounds, an operator should follow supervisor’s instructions.

CS 5000

User Manual