7
©IriTech, Inc. 2014
Confidential and Proprietary Information
IriShield
TM
-USB MK 2120U - HW Developer’s Manual
6.
Hardware Specifications
Mechanical Size
Case Dimensions:
51.2 mm x 92.6 mm x 15.1 mm
(2 inches x 3.6 inches x 0.59 inches)
Power Requirements
Power Source:
Single USB Bus Powered
Required Voltage:
DC +5V ± 5% (Max = 250mA)
Power Management:
Mode
Current
Description
ACTIVE
Max 250mA
Fully operating
STANDBY
Max 80mA
Standby Mode
SLEEP
Max 60mA
Sleep Mode
Environmental
-20°C to +60°C Storage
0% to 90% humidity, non-condensing
0°C to +50°C Operating
Camera Description
Image Resolution:
Output is ISO Standard of 640 x 480 pixels
(Optional: Higher Resolution output is available.)
Sensor Resolution: VGA
Pixel Density:
Normally greater than 210 pixels across iris diameter
Focal Distance:
4.7 cm ~ 5.3 cm (1.8 inches ~ 2.1 inches) from the image sensor
(Focal Depth: 0.6 cm)
Optimal Distance:
5 cm (2 inches) from the image sensor
Field of View (FOV): About 3.3 cm x 2.4 cm at 5 cm (1.3 inches x 0.9 inches at 2 inches)
Infrared LED Illumination
Radiant Intensity: 0.2 mW/cm
2
(700-900 nm)
(Less than 2% of the LED Eye Safety Standard Regulation of 10 mW/cm
2
.)
Memory
64 MB NAND Flash Memory
128 MB Mobile DDR SDRAM
External Connection
1 USB Connection (supports USB 2.0)
Compliance
Eye safety (IEC 62471:2006-07)
RoHS
FCC Class B
IP54
