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ACR Electronics Glossary Of Terms

	Automatic Activation	the ability of an EPIRB to turn itself on upon contact with water.
	Automatic Deployment	the ability of an EPIRB to release itself from bracket via the Hydrostatic Release Unit (HRU) after being submerged. (Category I)
	BRC	Battery Replacement Center. An authorized ACR Service Center that can test and replace EPIRB batteries and reprogram 406 MHz EPIRB's UIN. See website to locate BRC nearest you.
	Category I EPIRB	type of 406 MHz EPIRB that will automatically deploy and activate when in contact with water. Unit can be manually activated while in its bracket or manually deployed and activated.
	Category II EPIRB	type of 406 MHz EPIRB that is manually deployed. EPIRB will automatically activate when in contact with water and not in its bracket.
	Class 1 EPIRB	And EPIRB that is rated for operation in extreme cold climates (48 hrs @ -40?C, -40?F). All ACR 406 MHz EPIRBs are rated Class 1.
	Class 2 EPIRB	An EPIRB that is rated for operation in more temperate climates (48 hrs @ -20?C, -4?F).
	COB	Crew-Overboard
	COSPAS-SARSAT	The international cooperative among the United States, Canada, Russia and France that operates the satellite monitoring system for 406 MHz EPIRBs.
	EPIRB	Emergency Position Indicating Radio Beacon. A 406 MHz EPIRB broadcasts on that frequency and is capable of transmitting a unique coded signal identifying the carrying vessel. A Class B EPIRB transmits only an audio tone alert on 121.5 MHz and 243.0 MHz and is not capable of vessel identification.
	FCC	Federal Communications Commission is a United States governmental agency responsible for regulating products manufactured in the United States, that transmit over the airwaves.
	FIELD PROGRAMMABLE	a 406 MHz EPIRB whose digitally Unique Identifier Number (UIN) can be reprogrammed by selected BRCs worldwide.
	FLOATS	the product is capable of floating in water. In the case of EPIRBs, unit must be held upright to transmit.
	FLOATS UPRIGHT	the EPIRB will float with the antenna in a vertical position, completely out of the water. Unit will transmit effectively when floating in this position.
	FULL FUNCTIONAL SELF-TEST	this feature, found on ACR 406 MHz EPIRBs, tests battery for voltage, creates a test message, sends the message, fires the strobe, and, if equipped with it, confirms the GPS is operational by conducting a GPS Circuitry Test. Single, three-position switch for easy test of battery, EPIRB and GPS operation. Regarding GlobalFix? 406 EPIRB with Integral GPS, GPS Acquisition Test feature can be initiated by holding test switch up at the finish of self-test, and for an additional 10 seconds. GPS will power up and acquire a satellite fix. A green LED confirms a successful acquisition. This should only be done once in the life of the GlobalFix? to minimize drain on the battery.
	GEOSAR	geostationary high earth orbiting satellites that receive 406 MHz signals nearly instantaneously. Position is provided by a GPS-enabled EPIRB.
	GMDSS	Global Maritime Distress and Safety System. Minimum safety standards agreed to by the International Maritime Organization (IMO).
	GPS INTERFACE	the EPIRB has the ability to receive position data from an external source to transmit along with the emergency signal.
	HIGH IMPACT POLYCARBONATE BLEND	the extremely durable material used by ACR to withstand exposure to harmful UV, oil, seawater, impact and raft-packing.
	HRU	Hydrostatic Release Unit. A device which senses water pressure and allows an EPIRB to be released from its bracket at approximately 4 m (13.1 ft) of depth.
	ILS	In Line Speaker. An EPIRB equipped with a speaker that emits an audible warble to confirm activation and transmission of distress signal or to notify of accidental activation.
	INTEGRAL GPS	406 MHz EPIRB with a built-in GPS receiver. It is self-contained and needs no external position data input when transmitting an emergency signal.
	LEOSAR	low earth orbiting satellite that receives signals from EPIRBs and records their Doppler shift data.
	LUT	Local User Terminal. The initial ground receiving station that picks up EPIRB signals from LEOSAR and Geosar and forwards them to the Mission Control Center. It also calculates the location of the signal by precisely measuring the Doppler shift caused by the relative motion between the satellite and the emergency beacon.
	MANUAL ACTIVATION	the EPIRB must be turned on by the user (in an emergency).
	MANUAL DEPLOYMENT	the act of releasing an EPIRB from its bracket by hand. Some brackets will only deploy manually, while others can deploy both automatically and manually.
	MCC	Mission Control Center. The location that gathers satellite information from the LUT, verifies user registration information to determine if the signal may be a false alarm, then issues an alert to the appropriate Rescue Coordination Center (RCC).
	MED	Marine Equipment Directive. European approval for equipment that conforms to IMO/SOLAS requirements.
	NMEA 0183	the standardized protocol for data transmission developed by the National Marine Electronics Association that governs the type and sequence of information shared by navigational equipment.
	NOAA	National Oceanic and Atmospheric Administration. The United States government agency that, among other things, manages the USA?s EPIRB registration database and serves as a nodal MCC.
	PLB	Personal Locator Beacon. A 406 MHz PLB broadcasts on that frequency and is capable of transmitting a Unique Identifier Number (UIN) identifying the carrier.
	RCC	Rescue Coordination Center. The location that deploys and directs search and rescue personnel.
	RDF	Radio Direction Finder.
	R&TTE	Radio and Telecommunications Terminal Equipment. European approval for equipment that conforms to CE requirements.
	SAR	Search and Rescue. Emergency response forces that could be funded by federal, state, municipal or private agencies.
	SART	Search and Rescue Transponder. This device amplifies a radar?s signal and returns it with an enhanced signature on the radar?s screen that includes a line of 12 ?blips??designed to get the attention of the operator.
	SOLAS	Safety of Life at Sea. Minimum safety standards agreed to by the International Maritime Organization (IMO).
	STROBE	intense, extremely conspicuous pulsing light for enhanced location in poor visibility conditions.
	UIN	the Unique Identifier Number programmed into 406 MHz EPIRBs that is registered at the appropriate national authority and broadcast by the EPIRB in an emergency.
	USCG	United States Coast Guard, the United States Marine SAR response agency.
	WATERPROOF	The ability of a piece of equipment to prohibit water penetration of its exterior case or housing. Often rated as the ability to continue to remain functional despite complete immersion to a specified depth.
	WATER-RESISTANT	The ability of a piece of equipment to continue functioning if it comes in contact with water but is not immersed. Sometimes called SPRAY or SPLASH-RESISTANT.
	WATER SENSOR ACTIVATION	The unit will turn on when it has been armed and comes in contact with water.

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EMERGENCY EQUIPMENT/ Search & Rescue / Survival

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ACR Electronics Glossary Of Terms