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INSTALLATION
5-37
System 2 Installation / Programming Manual
Proximity Readers
Overview
Corby Proximity Cards are read when they are brought within reading distance of a Card Reader, typically 3”-
36” depending upon the style of the reader. It is not necessary for the Card to have physical contact with the
Card Reader for a read to occur.
Corby Proximity Readers are available in a variety of indoor and outdoor versions.
When a Proximity Card is presented to the reader, it is triggered into a transmission mode and the Card
transmits a 30 bit digital signal to the reader by means of an electrostatic coupling. Proximity Cards do not
have batteries to restrict their life but instead receive power to transmit as part of the trigger signal from the
Card Reader. When a valid Card is presented the LED will flash and then turn to a steady green status for the
relay time duration.
Unlike other Proximity systems which use resonant circuits as code elements, Corby/Indala ASP Cards
actually contain miniature CMOS circuits. These cards can also be read while still in a wallet or purse. In
addition, readers may be installed behind walls for enhanced security, and some models may be mounted on a
solid metal surface. Readers should not be mounted within a few feet of a PC monitor or Video Display
Terminal (VDT) since this may reduce the read range.
Proximity Reader Styles
Standard size readers measure 5.5 X 4.5 inches. They are surface mountable and protrude 1.375 inches from
the mounting surface. Typical read distance is 5-8 inches but this may vary depending on the installation.
There is an outdoor weatherproof version and an indoor version. Both have a bicolor LED and beeper for
audible status.
Wiegand size proximity readers measure 5.25 X 2.25 inches. They are surface mountable and protrude 1.5
inches from the wall. These readers are designed to replace a standard Wiegand style swipe reader. Read
distance is up to 4 inches. This is an indoor and outdoor reader in black only. This style reader may be
mounted on a metal surface.
Switchplate size readers are also available. This reader measures 3 X 4.625 inches and protrudes .5 inches
from the mounting surface. Read distance is approximately 4-5 inches. This unit is beige in color. A bicolor
LED indicator and beeper is included. This unit may be mounted to a single gang metal electrical junction box
or on a flat wall. It will not operate on a solid metal surface. This unit is not for outdoor use.
Mullion size readers are only 1.6” wide and 5.5 “ high which means they will fit most 1.75” wide aluminum
storefront door frames. The reader protrudes .5 inches from the door frame. Typical read distance is 3-4
inches. The reader (black) has a built-in bicolor LED indicator and beeper. These units are specifically
designed to operate outdoors on a metal surface but will also operate on non-metallic surfaces.
Switchplate and mullion style readers best reading will occur by moving the card or tag at any convenient angle
toward the reader rather than swiping it across. A slight read delay of approximately one second is normal.
Hold the Card parallel to the reader within the read range and pull the Card away. The Card Reader LED
will flash (and beeper sound - if connected) then the LED will switch to green indicating a valid card was read.
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