Myalarm V-LCD1 Manual de instrucciones descargar pdf (Pagina 23)

OPTIONAL EQUIPMENT

4-17

System 2 Installation / Programming Manual

CHAPTER 4

OPTIONAL EQUIPMENT

Programming Wand

To assist you while entering Data Chips we highly recommend you purchase a programming wand (p/n 2018).

This wand plugs into Socket 6 (SCKT6) in the upper right hand side of the circuit board. If you do not wish to

purchase this wand you can program Data Chips using the touch point (TP1) located to the right of SCKT6.

Line Extender Module

The Corby Line Extender Module (LEM - p/n 4056) improves performance and extends the distance of a

Wiegand, Bar-code or Mag-stripe Card Reader an additional 500 ft. from the System 2.

The best place to install the LEM is at the midway point of the cable between the reader and the System 2.

Multiple LEMs can be connected at 500 ft. intervals to increase the reader distance.

When connecting more than one LEM to a single reader, wire size must increase to compensate for the

voltage drop which occurs with long wire runs. Wiegand readers require 4.75 - 5.25 VDC. Proximity readers

require 12-14 VDC. Mag-stripe and bar-code readers are particularly sensitive to low voltage created by long

wire runs and you must compensate for the extra voltage drop by running heavier wire or doubling up on

conductors.

The LEM is not waterproof and must be mounted in a dry secure area. Avoid placing the LEM outdoors. If

mounting an LEM outdoors is absolutely necessary, a sealed weatherproof box or enclosure must be used.

Door Locks

Door Strikes and Magnetic Locks must be Direct Current (DC) type, can be 12V or 24V and need their own

power supply. AC strikes are not recommended because they generate electrical noise and Electro-magnetic

interference (EMI) that is difficult to eliminate. We recommend magnetic locks (Mag-Locks) because they

almost never wear out, and rarely need service. External power supplies are required for all door lock

devices. A two conductor 16 or 18 gauge wire is suggested for door lock wire. It is OK to use shielded wire

but it is not required. Install a diode across the coil of the DC door lock (at the lock) to prevent noise

spikes.

Your door lock will require the use of an external power supply.

Be sure there is a door which can be accessed in case of an emergency. If all doors are secured with a

electric door lock and the power and backup battery fail, you may find yourself locked in/out of the

building.

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Myalarm V-LCD1 Manual de instrucciones Pagina 23