Viper Model 480XV - Manual (Page 31)

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The microprocessor at the heart of your security system is
constantly monitoring all of the switches and sensors that are
connected to it. It detects any faulty switches and sensors and
prevents them from disabling the entire system. The micropro-
cessor will also record and report any triggers that occurred
during your absence. Refer to the System Status Chirps and
Table of Zones charts for diagnostic information.
arming diagnostics
If the system is armed while an input is active (door open, sensor
triggering, etc.) the unit will chirp once when arming and then
one more time a few seconds later. This is called Bypass
Notification.
The security system will ignore the input that was active when
the system was armed, until the input goes away. Three seconds
later the system will monitor that input normally. For example,
if your vehicle’s boot was open, and you arm the system, you
will hear Bypass Notification chirps. If you close the boot it is
then monitored normally without the need to disarm and then
rearm the system.
note: Bypass Notification will not occur when using
Silent Mode™ or if chirps have been programmed OFF.
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