TM 5-6350-264-14&P-9NAVELEX EE 181-AA-OMI-100/E121 DZ-204T.O. 31S9-2FSS9-1-9CHAPTER 2OPERATING INSTRUCTIONSSection I. OPERATING PROCEDURES2-1.CONTROLS AND INDICATORS.There are nooperator controls or indicators applicable to thisequipment.2-2.NORMAL OPERATING PROCEDURES.The AA is ready for operation after it is installed, tested,and connected to the J-SIIDS Control Unit. Since thestartup and shutdown of the AA is dependent upon thepresence or absence of power from the J-SIIDS ControlUnit, no operating procedures are required.2-3.EMERGENCY OPERATION. Operation withincomplete surveillance coverage or faulty tamper circuitshould be held to a minimum. Extended periods ofoperation on battery (stand-by) power should be avoided.2-4.UNUSUAL OPERATING CONDITIONS.Relocation or storage of large objects within closeproximity of equipment cabinet will reduce effectivenessof audible signal.Section II. THEORY OF OPERATION2-5.FUNCTIONAL DESCRIPTION. The AudibleAlarm provides an audible indication of an alarmcondition when it receives an alarm signal from the J-SIIDS Control Unit. An alarm signal switches onelectronic circuitry that produces a loud (min 108 db @10 ft), varying (500 to 2, 000 Hz) tone. This alarmindication will continue until the cause of the alarm hasbeen removed and the Control Unit (CU) has been reset.Primary ac power is provided by the CU. This ac poweris rectified to dc andused to operate all electronic circuitry including thebattery charger. Emergency power is provided by thebattery. If ac power fails, the AA will automatically drawoperating power from the battery. A tamper alarm isautomatically initiated if the AA enclosure door isopened, if the enclosure is pried away from its mountingsurface, or if the inner and outer enclosures are shortedtogether. Figure 2-1 is a simplified block diagram.Figure 2-1. Audible Alarm Simplified Block Diagram2-1/(2-2 blank)
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