Data Acquisition
The board provides the following data acquisition capabilities.
Type of I/O
Characteristics
Analog Input
•
16 single-ended/8 differential inputs,16-bit resolution.
•
100KHz maximum aggregate A/D sampling rate.
•
Programmable input ranges/gains:
+/-10V, +/-5V, +/-2.5V, +/-1.25V, 0-10V, 0-5V, 0-2.5V.
•
A/D FIFO for reliable high-speed sampling and scan
operation.
Analog Output
•
Four analog outputs, 12-bit resolution.
•
±10V and 0-10V output ranges.
•
Indefinite short circuit protection on outputs.
Digital I/O
•
24 programmable digital I/O, 3.3V and 5V logic
compatible.
Counter/Timers
•
One 24-bit counter/timer for A/D sampling rate control.
•
One 16-bit counter/timer for user counting and timing
functions.
On board I
2
C flash EEROM is provided for auto-calibration value storage.
Standard Peripherals
The board provides the following standard system peripherals.
Peripheral
Characteristics
Serial ports
Four serial ports
PS/2 ports
Keyboard and mouse
USB ports
Four USB 1.1 ports
IDE ports
One 44-pin connector for HDD or compact flashdisk socket
Athena II contains four serial ports. Each port is capable of transmitting at speeds of up to 115.2Kbaud, and uses a
dedicated RS-232 transceiver with ESD protection.
Ports COM1 and COM2 are built into the standard chipset, consisting of standard 16550-type UARTs with 16-byte
FIFOs.
Ports COM3 and COM4 are derived from a dual UART chip, which includes 128-byte FIFOs. These ports may be
operated at speeds up to 460Kbaud with the installation of high-speed drivers as a custom option. COM3 and
COM4 can also be BIOS-selected for RS-232 or RS-485. Termination resistors can be jumper-enabled on these two
ports.
Console redirection feature is incorporated. This feature enables keyboard input and character video output to be
routed to one of the serial ports.
The board contains provision for mounting a solid state IDE flash disk module with capacities ranging from 32MB
and greater. The module mounts onto the board using a 44-pin 2mm pitch header and a hold-down mounting hole
with spacer and screws.
Bus Interfaces
Diamond Systems Corporation
Athena II User Manual
Page 13
