User's Manual

Appendix A: Auto Synchronization
Auto synchronization occurs during power up or
system reset. Auto sync can have four different
outcomes depending on whether nearby EAS
transmitters are detected, they are properly aligned
to the ac-derived timing of the controller, or too
much ambient noise exists.
No transmitters detected. During initialization, the
controller determines if EAS transmitters are
nearby. If none are found, transmitter delay is set
to zero if this is the initial power on, or set to the
value stored in the controller if this is not the initial
power on. The service configurator displays "No
Signal” and normal operation proceeds.
Transmitters detected:
• Transmitters detected and aligned. During
initialization, the controller determines if EAS
transmitters are nearby. If transmitters are
found, and are correctly aligned, the transmitter
delay is calculated and stored in the controller
for reference. The service configurator displays
“Locked” and normal operation proceeds.
• Transmitters detected and not
aligned. During
initialization, the controller determines if EAS
transmitters are nearby. If transmitters are
found, but are not aligned, the transmitter delay
is set to zero if this is the first power on of the
controller, or set according to the value stored
the controller and the service configurator
displays “Too Many Signals”. The controller
operates normally; however, the status LED on
the controller flashes yellow to indicate system
performance might be downgraded.
Too much ambient noise. During initialization, the
controller determines if EAS transmitters are
nearby. If ambient noise prevents the location other
transmitters and if this is the first power on of the
controller, the transmitter delay is set to zero. If this
is not the first power on of the controller, the zero
crossing delay stored in the controller is used and
the service configurator displays “Too Much
Noise”. The controller operates normally; however,
the status LED on the controller flashes yellow to
indicate system performance might be
downgraded.
Note: The controller stores the zero crossing delay
for the instance when, during subsequent power
cycles, the controller could not determine a reliable
lock. Instead of using zero for the delay, the
controller uses the stored zero crossing delay.
Sync Link Detection. If a Sync Link device is
connected to the Sync link port, the controller
switches over to using the Sync Link signal as the
timing reference. The service configurator indicates
that the Sync Link is active.
AMS-9040 CONTROLLER 8200-0367-02, REV. D
INSTALLATION AND SERVICE GUIDE
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