Avital 5103 Owner's Manual

reserved.

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.