Compaq 380 Manual De Usuario

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Section 1.  Features and Specifications 
 
 
 
3
Motorized Card Transport 
 
The Card Transport is based on an existing MagTek magstripe/encode module.  This module 
incorporates the following features: 
 
Lead-in Roller System 
 
The primary purpose of the Lead-in Roller System is to grab the card from the user during card 
insertion and to make sure the card is mechanically under motor control before reaching the 
read/write head and its associated drive rollers. 
 
As a secondary function, the Lead-in Drive Roller will also assist in allowing for a more reliable 
exit positioning of the card during an eject sequence.  The Lead-in Roller allows for the 
possibility of pulling the card back into the reader if required. 
 
Front Opto-Sensor 
 
The Front Opto-Sensor is located near the entrance of the card path.  The primary function of this 
sensor is to provide information that a card has been inserted into the Reader and to inform the 
microcontroller to initiate motor and card-handling activities.   
 
As a secondary function, this sensor also provides feedback regarding card location during a card 
eject and/or jam-clear sequence. 
 
Encode Opto-Sensor 
 
This sensor is located approximately 0.300” before the crown of the magnetic read/write head.  
The primary purpose of this sensor is to provide the microcontroller with the position of the 
leading edge of the card just before encoding. This information, in conjunction with the Rotary 
Pulse Generator (RPG), allows for a higher degree of positional accuracy just before initiation of 
the magnetic encode process. 
 
As a secondary function, this sensor also provides feedback regarding card location during a 
card-eject and/or jam-clear sequence. 
 
Card-Landed Mechanical Switch Sensor 
 
This switch is integrated as part of the ISO-8 smartcard contact block, and the sensor provides an 
indication when the leading edge of a card has reached physical travel limit for rearward travel 
and has successfully engaged with the smartcard contacts which allows for a successful 
smartcard interface session.