Beijer Electronics QTERM-A12, Hardware Manual

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QTERM-A12 Terminal
9
C
HAPTER
4
H
ARDWARE
D
ESCRIPTION AND
A
RCHITECTURE
4.1 User Interface
Display
The QTERM-A12 features a TFT color SVGA (800 x 600 pixels) LCD display that measures
308 mm (12.1") diagonally. The display backlight has a typical rating of 450 nit.
Touch Screen
A clear analog-resistive touch screen covers the entire display area for user input. The touch
screen is a 5-wire architecture offering improved durability and touch endurance. The face of
the touch screen has an anti-reflective (AR) coating and a hardness of 3H.
External Peripherals
Two full-speed USB ports are available on the back of the QTERM-A12. These ports can be
used to add many other devices, such as a keyboard, mouse or additional mass storage. Adding
USB peripherals that are not self-powered will increase the power consumption of the termi-
nal.
4.2 Processor
The processor in the QTERM-A12 is the Marvell PXA300 processor (ARMV5TE), incorpo-
rating Intel XScale technology running at 624 MHz.
4.3 System and Application Memory
DRAM
The QTERM-A12 includes 128 Mbytes of DDR SDRAM volatile memory with a maximum
bandwidth of 520 Mbytes per second.
Flash
The QTERM-A12 uses an internal 4 Gbyte NAND flash device to hold the main Windows CE
image and provide non-volatile storage for user applications and data.
C
AUTION
For Class I, Division 2 installations:
The USB ports are for operational maintenance only. Do not leave USB devices permanently
connected unless the area is known to be non-hazardous.