STATE OF WASHINGTON
EMERGENCY ALERT SYSTEM

 

TAB 7
Glossary of EAS Terms

Activation The initiation of the EAS by transmission of EAS codes.
Activation Format The specific format an EAS activator should follow.  The state activation format is addressed on page 21 and Tab 16 of this Plan: the local activation formats are detailed in the local area operational plans outlined in Tabs 12 and 13.
Activator The entity which initiates an EAS test or alert.
ASCII Code A standard set of text characters with numerical equivalents as defined by the American Standard Code for Information Interchange.
Attention Signal Eight to 25 seconds of two tones (853 Hz and 960 Hz) used as an audio alert.
Authorization Letter The official authorization letter, given by the FCC to Non-participating National (NN) stations for a broadcast station to go off the air during a national level activation of the EAS.
Automatic Interruption The automatic encoding and transmission of EAS codes for pre-selected events.
City/County of License The city or county listed on a broadcast license as the station location.
Class D FM A station whose output is 10 watts or less.
DBS Direct Broadcast Satellite.  A service intended to deliver satellite signals directly to consumers using small, relatively inexpensive receive stations.
DEM Division/Department of Emergency Management.
DES Division/Department of Emergency Services.
EAN Emergency Action Notification.  A national level EAS alert.
EAN Network The interconnection of the federal government with national networks and program suppliers used to disseminate the EAN message.
EAS Emergency Alert System.  EAS is comprised of broadcast networks; cable networks and program suppliers; AM, FM, and TV broadcast stations; LPTV stations; cable systems; and other entities and industries operating on an organized basis during emergencies at the National, State, or local levels.  It requires that at a minimum all participants use a common EAS protocol, as defined in FCC Rules Part 11.31, to send and receive emergency alerts.  EAS replaced EBS [11.11].
EAS Alert An EAS activation in an actual emergency.
EAS Decoder A device that monitors sources and decodes incoming EAS messages.
EAS Encoder A device used by EAS participants to originate EAS alerts by creating the EAS codes for transmission to other participants and to the public.
EAS Test EAS activation for testing purposes.
EAT Emergency Action Termination.  The message for national EAS termination.
EBS Emergency Broadcast System.  An outdated system for providing emergency information to the public.  It was replaced by EAS in January, 1997.
End of Message Code ASCII data string which signifies the end of an EAS message.
EOC Emergency Operations Center.
Event Code A three-character ASCII code in the EAS header that denotes the type of event for which an EAS test or alert is issued.
FCC Federal Communications Commission.  One of three federal agencies that participate in EAS.
FCC Mapbook A FCC document which organizes all broadcast stations according to their State, EAS Local Area, and EAS designation [11.21c].  This list is attached to the state plan by the FCC.
FEMA Federal Emergency Management Administration.  One of three federal agencies that participate in EAS.
FIPS Codes Federal Information Processing System number assigned to states and counties.
Header Code A single string of intelligent ASCII data that includes the originator, event, location, time period, and other basic information concerning an EAS test or alert.
Julian Calendar A method of specifying the date by the number of days which have passed since the first day of January in a year.
Key Source A source which is central to the dissemination of emergency alerts and information, such as an NP, SRN, LRN, or LP broadcast station.
LAECC Local Area Emergency Communications Committee.
Local Area Plan The plan developed by a committee in each local operational area which outlines the EAS system and procedures for that particular area.  The local area plan for the appropriate operational area is included in this State plan. (See Tabs 12 and 13).
Local Operational Area An operational subdivision of the state.
Location Code A six-digit ASCII code in the EAS header that specifies the location of an emergency utilizing the five character FIPS code of a state and county, and a sixth character to designate one of nine divisions of a county.
LP Local Primary.  A key source within a local area that is the primary source of EAS programming for that local area.
LPTV Low-power television station.
LRN Local Relay Network.  A system of facilities used to distribute Local EAS activation and programming throughout a local area.
MDS Station Multipoint Distribution System station.  A facility which delivers a signal to several specific locations.
Monitoring Assignment The assignment made by the SECC to each broadcast station and cable system designating the sources each facility should monitor for incoming EAS messages.
National Alert EAS alert of national origin.
National Control Point Procedures Those national EAS procedures used only by national networks and program suppliers.
NIC National Information Center.  A source of official federal government information.
NN Non-participating National station.  A broadcast station that has elected not to participate in the National-level EAS and removes its carrier from the air if a national-level activation occurs.
NOAA National Oceanic and Atmospheric Administration.  One of three federal agencies that participate in EAS.
NOAA Weather Radio A service of the National Weather Service that provides continuous broadcasts of the latest weather information and any weather-related emergency warnings to a local area.  NWR uses seven VHF radio frequencies.
NP A primary source of Presidential or other national EAS activations and programming, including broadcast station involved with the PEP system and EAN networks.
NWR NOAA Weather Radio.
NWS National Weather Service.  NWS is an operation of NOAA that is directly responsible for issuing local weather-related emergency alerts and warnings in addition to day-to-day forecasts and other weather activities.
Operational Handbook A document issued by the FCC that instructs broadcast station and cable personnel of the actions they must take during an EAS activation.
Originator The entity which originates an EAS alert.
Originator Code A three-character ASCII code in the EAS header that identifies the entity which originates an EAS test or alert.
PEP Primary Entry Point.  Key broadcast stations throughout the U.S. which together can provide national emergency information in the event that the primary national alerting methods are inoperable.
PN Participating National.  Broadcast stations, cable systems or MDS stations which monitor primary sources of EAS programming and directly feed emergency alerts to the public.
Pre-Selected Code An EAS event which the operator of EAS equipment has chosen to be automatically encoded and retransmitted upon reception.
Program Priorities The precedence of the information that must be transmitted during an EAS activation, namely national, local, and state activations in that order.
Protocol A standard set of guidelines by which digital information is encoded and decoded, including the common code structure, the character set used, the sequence and timing of codes, and modulation technique used for radio transmission.
Re-Transmission Agreement Signed agreements between the SECC and certain broadcast (LP) stations that define what the station will monitor and what types of activations will be re-transmitted.
RMT Required Monthly Test.  A coordinated monthly test of EAS operations involving the full receiving and transmission of EAS codes, attention signal, EAS test programming, and EAS end-of-message codes.
RWT Required Weekly Test.  An independent weekly test of EAS equipment only involving the decoding and encoding of EAS header codes and end-of-message codes.
SAME Specified Area Message Encoder.
SECC State Emergency Communications Committee.
Sources Monitor inputs to EAS decoders.
SP State Primary.  A primary source of EAS state programming which can originate with a Governor or designated representative, such as a state’s emergency operations officer.
SR State Relay radio system on 155.475 Mhz.  An entity which receives and retransmits EAS activations in the State Relay Network to assist in bringing a state activation to all Local Areas of a state.
SRN State Relay Network.  A system of facilities used to distribute state EAS activations and programming across the state.
State EAS Plan This document, which outlines the organization and implementation of EAS I Washington State.  It includes monitoring assignments, actions to be taken in emergency activations, and other guidance for broadcasters and cable personnel in use of the EAS.
State/Local Alert EAS alert of state or local origin.
Termination Script Specific scripts, specified in the State Plan (for local and state EAS activations), which signal the end of an EAS activation.
Test Script The audio portion of the RMT.  The actual wording to the test script is decided upon by the SECC and included in the state plan.
Time-Duration Code A four-digit ASCII code in the EAS header that defines how long the EAS activation is valid.
Translator A radio or television facility which receives a signal on one frequency and transmits it on another frequency.
UTC Coordinated Universal Time.  The world-wide common time standard that is used in EAS headers for time stamp.
Valid Code An EAS header which has been matched bit-for-bit with one of two other received headers thereby checked for validity.
WRSAME Weather Radio Specific Area Message Encoder.  A device used by the NWS to broadcast data on the NWR system for day-to-day forecasts and weather-related emergency announcements.

 
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