Chapter 3 - Hardware Configuration; System Hardware; 802.11B/G And A/B/G Wireless Client; System Memory - Honeywell HX3 User Manual

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Hardware Configuration

System Hardware

802.11b/g and a/b/g Wireless Client

The HX3 has an 802.11x network card that supports diversity with two internal antennas. The CPU board does not allow
hot swapping the network card. Adjusting power management on the network card is set to static dynamic control.
WEP, WPA and LEAP are supported.
Central Processing Unit
The CPU is a 400MHz Intel XScale PXA255 CPU. The operating system is Microsoft® Windows® CE 5. The OS image is
stored on an internal SD flash card and is loaded into DRAM for execution.
XScale turbo mode switching is supported and turned on by default.
The HX3 supports the following I/O components of the core logic:
• One SD card slot, inaccessible to the end-user.
• One TTL serial port designed to interface with the ring scanner only.
• One RS232 serial port accessible via the cradle.
• USB master accessible via the cradle.
• USB client accessible via the cradle.

System Memory

The 400MHz CPU configuration supports 128MB SDRAM, 128MB SD card. SD card location is inaccessible to the end
user.
The system optimizes for the amount of SDRAM available. The operating system executes out of RAM.
Internal flash is used for boot loader code and system low-level diagnostics code. Bootloader code is validated at system
startup. The UUID required by CE 5.0 is stored in the boot flash. A second copy of the bootloader code is stored on the
internal SD Flash drive, so that if a damaged bootloader is detected, it may be re-flashed correctly.

Internal SD Memory Card

The HX3 has one SD card interface for storage of operating system and program code, as well as persistent storage. The
SD slot is inaccessible and ships with a qualified 128MB (optional 512MB) SD Flash card.
The internal SD flash card supports a FAT file system, via a special device driver, and appears to the OS as a folder. This
allows the contents to be manipulated via the standard Windows CE interface. Operating system files are hidden on this
drive with a terminal unique identifier in the internal flash, to prevent them being accidentally erased by a user. In addition,
the registry hive files are stored on this device. The amount of Flash memory available for customer use is the original SD
flash card size less 40MB.

Power Supply

The HX3 uses two batteries for operation. A Lithium-Ion (Li-Ion) battery supplies power to the HX3 only when tethered to
the HX3. The main battery is either the 2000 mAh (Standard) or the 4000 mAh (Extended) battery. Only one main battery
can be tethered to the HX3 at a time. The batteries can be hot-swapped after the HX3 is placed in Suspend mode.
The internal backup battery is a 50 mAh Nickel Cadmium (NiCad) battery. The backup battery is recharged indirectly by the
HX3 with a tethered battery. Recharging maintains the backup battery near full charge at all times. When the backup
battery is fully drained, it may take up to 5 hours to recharge. The capability to discharge the backup battery is provided
(Start > Settings > Control Panel > Battery) to allow the user to condition the backup battery in order to recover full
battery capacity. The backup battery must be replaced by qualified service personnel. The backup battery has a minimum
2 year service life.
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