18.SPECIFICATIONS

Analog Inputs

Number of inputs	32 single-ended, 16 differential, or 16 SE and 8 DI
A/D resolution	16 bits (1/65536 of full scale)
Input ranges	Bipolar: +/-10V, +/-5V, +/-2.5V, +/-1.25V, +/-0.625V Unipolar: 0 - 10V, 0 - 5V, 0 - 2.5V, 0 - 1.25V
Input bias current	100pA max
Maximum input voltage	+/-10V for linear operation
Overvoltage protection	+/-35V on any analog input without damage
Input Impedance	10^13 ohms (10,000 Gohms) within normal input ranges
Nonlinearity	+/-3LSB, no missing codes
Conversion rate	250,000 samples per second max, single channel
Conversion trigger	Software command, internal pacer clock, or external TTL signal

Analog Outputs

Number of outputs	4
D/A resolution	16 bits (1/4096 of full scale)
Full-scale output ranges	Fixed Unipolar: 0 - 5V or 0 - 10V Fixed Bipolar: +/-2.5V, +/-5V or +/-10V Programmable: 0 - 10V or 10V in .01V steps
Output current	+/-5mA max per channel
Settling time	6uS max to 1/2 LSB
Relative accuracy	+/-1 LSB
No linearity	+/-1 LSB , monotonic
Output reference	+5V +/-.005V

Autocalibration

Circuits calibrated	A/D (all 9 input ranges) and D/A
A/D error after calibration	+/-2LSB
D/A error after calibration	+/-1LSB

Digital I/O

Number of lines	24 using 8255-type circuit
Handshaking	Latch input, acknowledge output available in 8255 mode 1 configuration
Input voltage	Logic 0: 0.0V min, 0.8V max; Logic 1: 2.0V min, 5.0V max
Input current	+/- 1 A max
Output voltage	Logic 0: 0.0V min, 0.33V max; Logic 1: 2.4V min (at 15mA load), 5.0V max
Output current	+15/-64mA max per line
Auxiliary DIO	4 inputs, 3 outputs, TTL compatible

Counter/Timers and Interrupts

A/D Pacer clock	32-bit down counter (2 82C54 counters cascaded)
Clock sources	10MHz on-board clock oscillator 100KHz derived frequency External signal
General purpose	16-bit down counter (1 82C54 counter)
Clock sources	10MHz on-board clock oscillator 10KHz derived frequency External signal
Interrupt triggers	End of A/D conversion Latch input on digital I/O header Timer 0 output

Connectors

J1	PC/104 8-bit bus
J2	PC/104 16-bit bus
J3	Analog I/O, Digital I/O
J4	Digital I/O, Serial Port

Bus Interface

Compliance	PC/104 Spec. Rev. 2.5 Selectable 8/16-bit data bus I/O-mapped bus slave device DMA supported PCB Dmensions in(mm) 3.550 (90.17) x 3.775 (95.89) x 0.062 (1.57)

General

Power supply	+5VDC 10%
Current consumption	410mA typical
Operating temperature	-40oC to +85oC
Operating humidity	5% to 95% noncondensing
Weight	3.4oz / 96g
MTBF	972,275 hours at +20oC
RoHS	Compliant