Avital 5103 Manuel Du Propriétaire
©2009 Directed Electronics. All rights
reserved.
16
Nuisance prevention
®
circuitry
Your system has Directed’s Nuisance Prevention
®
Circuitry (NPC). It pre vents
annoying repetitive trigger sequences due to faulty door pin switches or en vi ron-
men tal con di tions such as thunder, jack ham mers, airport noise, etc.
Example
If the alarm triggers three times within a 60-minute period and each time the
same sensor or switch triggers the alarm, NPC will interpret those triggers as
false alarms. After the third trigger, NPC ignores, or bypasses, that sensor or
switch (along with any other sensors or switch es sharing the same zone) for 60
minutes.
If the bypassed sensor tries to trigger the security system while it is being by-
passed, the 60-minute bypass period will start over. This ensures that a sensor
that is con tin u ally being triggered will remain bypassed.
The vehicle doors are protected by NPC differently. If your security system is
triggered by an open door for three full cycles, the system will bypass the doors
until the trigger ceases.
Arming and disarming the system does not reset this function. The only ways to
reset a bypassed zone are for it to not trigger for 60 minutes, or to turn on the
ignition. If testing your system, it is important to remember that the NPC program-
ming can cause zones to be bypassed and appear to stop working. If five chirps
are heard when disarming, NPC has been engaged. If you wish to clear the
NPC memory, turn the ignition on.
Diagnostics
The microprocessor at the heart of your system is constantly mon i tor ing all of
the switches and sensors connected to it. It is designed to detect any faulty
switches and sensors and prevents them from disabling the entire system. The
microprocessor will also record and report any triggers that occurred during your
absence. Refer to the System Status Chirps and Table of Zones sections of this
guide for diagnostic information.