MiniMag USB HID Reader Interface Reference
4.
Operation
This section describes the LED Indicator and Card Reading.
4.1 LED
Indicator
The LED indicator will be either red, or green. The LED is green when the device
is powered. When the device is first plugged in, the LED will be amble. As soon
as the device is plugged in, the host will try to enumerate the device. Once the
device is enumerated the LED will turn green indicating that the device is ready
for use. When a card is being swiped, the LED will turn off temporarily until the
swipe is completed. If there are no errors decoding the card data then the LED
will turn green. If there are any errors decoding the card data, the LED will turn
red for less than one second to indicate that an error occurred and then turn
green. The reader does support USB suspend mode; the LED be off in suspend
mode.
4.2 Card
Reading
A card may be swiped through the reader slot when the LED is green. The
magnetic stripe must face toward the magnetic read head and may be swiped in
either direction. The data encoded on the card will be decoded and the data
transmitted and accepted into the USB HID input report. The reader LED will be
off during the data transfer and is ready to read another card when the LED
returns to green. A red LED indicates an error and the beeper will also provide
error indications. The beeper will beep for each correctly read track of data on
the magstripe card.
Copyright © 2006, International Technologies & Systems Corporation. All rights reserved.
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