Myalarm V-LCD1 Manuale delle Istruzioni Pagina 289

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GLOSSARY
D-283
System 2 Installation / Programming Manual
Forced Entry
A condition that exists when a door is forced open prior to a valid user entering the door.
Form A Relay
A type of relay that has a single pole, single throw, normally open contact.
Form C Relay
A type of relay which has contacts including a common, a normally open (NO) leg and a
normally closed (NC) leg.
Initializing
The automatic process of configuring the system at power-up. Default values are set and
memory is tested.
LED
Light Emitting Diode. A semiconductor device that emits light.
Magnetic Stripe
Card technology that uses a Magnetic Stripe to hold its data. System 2 uses a track 2 ABA
format.
Master
A System 2 unit, programmed to be part of a network of System 2's and in control of “slaves” on
the network. Any System 2 can be configured to be a master through programming.
Modem
A device that connects to a telephone line for the purpose of sending and receiving digital data.
Modems are rated by their speed or “Baud Rate.” Example 9600 Baud
National Electrical Code
A document published by the National Fire Protection Association. Its purpose is the practical
safeguarding of persons and property from hazards arising from the use of electricity.
Networking
The ability of System 2's to be linked together. A multi-drop, twisted pair of wire is connected
to each System 2 unit in the network in a daisy-chain fashion.
PCB
Printed Circuit Board. This board contains the electrical components of the system.
PIN
Personal Identification Number. A number which is unique to each user of the system, and is
entered at a Keypad in order to gain access.
Port
A designation given to all the input and output connections required to operate a door. It may
contain an input for RTE, Door Ajar, Keypad, Card Reader etc. and a relay output for
controlling the door.
Power Supply
A source of power for the access system, door locks and auxiliary devices. Usually consists of
a plug in transformer, circuit board and standby battery. Power supplies are rated by their
voltage and current capacity.
Prompt
A cue. When programming, the System will "ask" you to enter various information. This
"asking" is called a prompt.
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