System for testing NAC operability using reduced operating...

Details System for testing NAC operability using reduced operating... System for testing NAC operability using reduced operating...

2008-11-25

2011-11-22

Lau, Hoi (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S506000, C340S508000, C340S286050

Reexamination Certificate

active

08063763

ABSTRACT:
A monitoring system for a NAC (Notification Appliance Circuit) is provided. The monitoring system includes a system controller, and a NAC comprised of one or more notification appliances that may be in a series. The NAC and its appliances may be operatively coupled to the system controller. The system controller is operable to determine whether a notification appliance has sufficient voltage at a low voltage operation. The system controller may control the voltage to the NAC in order to provide power to simulate operation of the NAC using battery power. A voltage may be measured during the simulation (such as at one end of the NAC). The measured voltage may be compared with a predetermined minimum operating voltage for the notification appliance. Based on the comparison, it may be determined whether the one or more appliances on the NAC may operate properly when the NAC is operated using battery power.

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