Glossary

Term	Description
Access Control	Access Control is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using.
Access Group	A group of readers with assigned timezones which can be used to provide access to a facility.
Access Level	An Access Level is user-based and it allows or restricts an operator access to portions of the software.
Access Set	An Access Set is a set of Access Groups. An Access Set is what is assigned to a group of cardholders or individual cardholder to provide the rules of which they can access a controlled facility
Alarm	Alarms are events that that indicate a system rules violation or system performance issue. Examples of system alarms are panel power loss, panel communication loss, and panel processor failure. Common access control alarms include Door Forced, Door open too long, Timezone violation, Unauthorized access attempt.
Alternating Current	An electric current that reverses its direction regularly and continually. The voltage alternates its polarity and direction of current flow negative to positive.
American National Standards Institute (ANSI)	A federation of trade, technical and professional organizations, government agencies and consumer groups that coordinates standards development publishes standards and operates a voluntary certification program.
American Wire Gauge (AWG)	The standard system in the United States for designating wire (diameter of metal).
Ampere (amp)	The unit of measurement for the rate of electrical current. One ampere is the current flowing through one ohm of resistance at one volt potential.
Annunciator	An audible and visual signaling device.
Anti-Passback	A means of preventing the sharing of an access control credential. Anti-Passback can be based upon disabling a credential for a period of time after it is used, or by remembering the credential-holder’s in/out status.
Audit Trail	A means of recording and saving access control event history for later review.
Biometrics	The measurement of a physical trait that is unique, such as a fingerprint, hand geometry or iris pattern. Can be used as credentials to identify authorized users and to grant or deny access.
Break	To open an electrical circuit.
Brownout	Low line voltage that can cause misoperation of and possible damage to equipment. For example a motor that tries to start at low voltage can actually be in a lock-rotor condition and can overheat.
Cardholder	A person who by possession of a credential can gain access to a controlled facility.
CAT 5	A common cable type that consists of several twisted pairs in an overall protective jacket. Used for network cabling and many access control data functions.
Circuit	The path through which electrical energy flows.
Closure	The point at which two contacts meet to complete a circuit.
Concurrent Workstations	The number of Workstations connected or logged on to the Server at the same time.