Bioscrypt Inc. VSTICLASS Manual De Usuario

Document #430-90003-08

© Copyright 2003, Bioscrypt Inc.  All rights reserved.

Wiegand output lines should be connected to the Wiegand compatible

controller.  When connecting Wiegand output to a controller, you must make that

connection using Data0, Data1, and a common Ground reference.  Wiegand

input lines can be used for an alternate Wiegand input device (this connection is

required for the V-Flex device).

The Finger mask (conductive plastic surrounding the fingerprint sensor) is

sometimes referred to as an ESD Shield.  Pin 15 on the Pigtail (EGRND on the

input/earth-ground connector for V-Station) is connected to the ESD shield of the

fingerprint sensor.  This should be connected in such a way as to make a low-

impedance connection to Earth ground.  DO NOT CONNECT THE SHIELD TO

POWER GROUND.  Improper connections will potentially create ground loops that

may cause damage to the Veri-Series and other equipment.  Furthermore,

neglecting to provide a path for ESD to Earth ground puts the electronics at risk if

ESD is discharged into the unit from a user.

RS-232 and RS-485 are used for communication with a PC running Veri-Series

compatible software (such as our VeriAdmin software). RS-485 connections

among various readers should be made by connecting the (+) and (-) lines of the

differential RS-485 in a daisy chain manner.  For instance, from V-Prox to V-Prox,

the (+) line from one V-Prox is connected to the (+) line of the next V-Prox and so

on; likewise for the (-) lines.  Additionally, connect the grounds from each V-Prox

unit back to the signal ground connection for the PC.

The RJ-45 Ethernet connector can also be used for communication with a PC

running Veri-Series compatible software (Version 5.10 and above).  Standard

Ethernet patch cables may be used, but care must be taken to identify straight-

through cables versus crossover cables.  To wire a V-Station directly to a PC NIC

card, a crossover cable must be used.  For connecting multiple V-Stations

together on an Ethernet bus or directly to a switch or hub, straight-through cables

should be used.

The TTL Input/Output connections are standard 5V TTL Logic lines and are reserved

for future use.