  PC/104
Single Board Computer with 300-800MHz Vortex86 CPU and Integrated Autocalibrating
Data Acquisition
Helios is a low power, mid range performance PC/104 form
factor single board computer combining a highly integrated CPU with Diamond
Systems’ renowned high-accuracy data acquisition circuitry on a
single board, reducing size and cost while increasing ruggedness. Helios
utilizes a Vortex integrated single chip CPU operating at 300MHz or 800MHz
and 128MB or 256MB of DRAM soldered on-board.
 Helios incorporates advanced
features such as four USB 2.0 ports, an IDE hard drive interface, mounting
capability for a solid state flashdisk
up to 4GB, and CRT/LVDS LCD graphics. Helios also provides a 10/100Base-T
Ethernet interface, two RS-232 serial ports, two RS-232/422/485 serial
ports and legacy keyboard and mouse interfaces.
Helios includes an on-board
2MB bootable flash drive with FreeDOS installed, including a working
copy of Diamond's Universal Driver data acquisition
software with demo programs. This flash drive offers additional cost
savings for DOS applications, since no additional storage medium is
required. It also enables you to quickly verify Helios's operation. Just
connect
keyboard, monitor, and power, and Helios boots up to DOS so you can
verify proper working condition as well as test the various features
on the
single board computer.
Helios is extremely rugged, featuring on-board
soldered DRAM and -40°C
to +85°C fan-less operation. Optional hardwired jumpers and latching
connectors are available for increased resistance to shock and vibration.
Conformal coating is available as an extra cost option.
CPU Features
• Vortex86DX/SX CPU running up to 800MHz
• 128MB or 256MB of soldered DRAM
• On-board 2MB bootable flash drive with FreeDOS installed
• 4 USB 2.0 ports
• 2 RS-232, 2 RS-232/422/485 serial ports
• 10/100Base-T Ethernet
• 1 IDE UDMA-100 port
• Flashdisk interface
• CRT and LVDS LCD
• PC/104 ISA expansion bus
• -40ºC to +85ºC operation
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Data Acquisition Features
• 16 wide-range analog inputs, +/-10V down to 0-1.25V
• 16-bit A/D resolution
• Single-channel, multi-channel round robin, and multi-channel scan sampling
• 250KHz maximum sample rate
• 2048 A/D sample FIFO with programmable threshold
• Interrupt-based A/D data transfer with FIFO support
• Programmable input ranges
• 4 wide-range analog outputs with simultaneous update capability
• 12-bit D/A resolution
• Multi-range autocalibration for highest accuracy
• 40 digital I/O lines with programmable direction
• 16-bit and 24-bit counter/timers
• Field-upgradeable logic circuit for performance upgrades or custom designs
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System Block Diagram
Integrated Data Acquisition
Helios includes a complete autocalibrating jumper-less analog and digital
I/O circuit similar to our top-of-the-line PC/104 analog I/O board. It
contains 16 analog inputs with 16-bit resolution and 250KHz sample rate,
backed by a 2048 sample FIFO with programmable threshold. Programmable
input ranges from a wide-range +/-10V down to 0-1.25V are provided. The
analog circuitry also includes 4 D/A channels with 12-bit resolution
and jumperless output range selection and simultaneous update capability.
On the digital side, Helios provides 40 digital I/O lines with programmable
direction, as well as two counter/timers for A/D sample rate control,
pulse counting, frequency generation, or other applications. Its advanced
control logic has more features and flexibility to fit almost any application,
such as internal/external A/D clock source, scan and single-sample modes,
and our exclusive programmable FIFO threshold that lets you tune the
board's performance to your application. The data acquisition circuit
is fully supported by our Universal Driver software for a wide range
of operating systems.
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