SPECIFICATIONSCIO-DAS08-AOH
CIO-DAS08-AOM
CIO-DAS08-AOL
Analog Input & Digital I/O

Revision 5, October, 2000

© Copyright 2000, MEASUREMENT COMPUTING CORPORATIONPower consumption+5V:

670 mA typical, 840 mA max

Analog Input Section
A/D converter type
Resolution
Number of channels
Input Ranges
CIO-DAS08-AOH
CIO-DAS08-AOL
CIO-DAS08-AOM
Polarity
A/D pacing

574AJ
12 bits
8 differential (configurable as quasi-differential via installation of SIPresistor)±10V, ±5V, ±1V, ±0.5V , ±0.1V, ±0.05V, ±0.01V, ±0.005V, 0 to 10V,0 to 1V, 0 to 0.1V, 0 to 0.01V software-selectable±10V, ±5V, ±2.5V, ±1.25V, ±0.625V, 0 to 10V, 0 to 5V, 0 to 2.5V, 0to 1.25V software selectable±10V, ±5V, ±0.5V, ±0.05V, ±0.01V, 0 to 10V, 0 to 1V, 0 to 0.1V, 0 to0.01V software selectable
Unipolar/Bipolar, software selectable

A/D Trigger sources

Internal counter or external source (Interrupt Input, jumper selectable,rising edge) or software polled
External hardware/software (Digital In 1)

Data transfer
DMA

Interrupt or software-polledNone

A/D conversion timeThroughput

25 µs
20 KHz, PC dependent

Accuracy±0.05% of full scale
Differential Linearity error
Integral Linearity error
No missing codes guaranteed
Gain drift (A/D specs)
Zero drift (A/D specs)
Common Mode Range
CMRR
Input leakage current (@25 Deg C)
Input impedance
Absolute maximum input voltage±0.01% of reading ±1 LSB±1 LSB±0.5 LSB
12 bits±25 ppm/°C±10 µV/°C
±10V
72 dB
100 nA
10 Meg Ohms min±35V

Analog Output:
D/A converter typeResolutionNumber of channels
Output Ranges

AD7237 dual DAC
12 bits
2±10V, ±5V, ±2.5V, ±1.67V, 0 to 10V, 0 to 5V, 0 to 2.5V, 0 to 1.67V
Each channel independently switch selectable

Offset error
Gain error
Differential nonlinearity
Integral nonlinearity
Monotonicity±1 LSB max (adjustable to 0 with potentiometer)±1 LSB max (adjustable to 0 with potentiometer)±0.9 LSB max±1 LSB max
Guaranteed monotonic to 12 bits over temperature

D/A Gain drift
D/A Bipolar offset drift
D/A Unipolar offset drift±3 ppm/°C max±30 ppm/°C max±50 ppm/°C max

D/A pacing
D/A trigger modes
Data transfer
Settling time (D/A converter)(full scale step to ±0.5 LSB)
Slew Rate (OP07)

Software paced
Software
Programmed I/O
8 µs max
0.3V/µs

Current Drive
Output short-circuit duration
Output coupling
Output impedance±5 mA
indefinite
DC0.1 Ohms max

Miscellaneous
Double buffered output latches
Update DACs individually or simultaneously (jumper selectable)

Digital Input / Output
Digital Type (main connector)
Output:Input:
Configuration
Number of channels
Output High
Output Low
Input High
Input Low
Output power-up / reset state

74LS273
74LS244
4 fixed output bits, 3 fixed input bits
4 out, 3 in
2.7 volts min @ −0.4 mA
0.4 volts max @ 8 mA
2.0 volts min, 7 volts absolute max
0.8 volts max, −0.5 volts absolute min
low

Digital Type (Digital I/O connector)
Configuration
Number of channels
Output High
Output Low
Input High
Input Low
Power-up / reset state

82C55
2 banks of 8, 2 banks of 4, programmable by bank as input or output
24 I/O
3.0 volts min @ −2.5mA
0.4 volts max @ 2.5mA
2.0 volts min, 5.5 volts absolute max
0.8 volts max, −0.5 volts absolute min
Input mode (high impedance)

Interrupts
Interrupt enable
Interrupt sources

2 through 7, jumper-selectable
Programmable
External (Interrupt In), rising edge

Counter section
Counter type
Configuration

82C54
3 down-counters, 16 bits each

Counter 0 - independent, user configurable
Source:user connector (Counter 0 In)
Gate:
tied high through 10k (enabled)
Output:user connector (Counter 0 Out)Counter 1 - independent, user configurable
Source:user connector (Counter 1 In)
Gate:user connector (Gate 1)
Output:user connector (Counter 1 Out)Counter 2 - independent, user configurable
Source:1MHz (from 10MHz Xtal via divide-by-ten) or PC SysClk (via divideby 2 circuit) selectable by jumper
Gate:user connector (Gate 2)
Output:user connector (Counter 2 Out)Clock input frequency
High pulse width (clock input)
Low pulse width (clock input)
Gate width highGate width low
Input low voltage
Input high voltage
Output low voltage
Output high voltage

10 Mhz max
30 ns min
50 ns min
50 ns min
50 ns min
0.8V max
2.0V min
0.4V max
3.0V minEnvironmental
Operating temperature range
Storage temperature range
Humidity

0 to 50°C−20 to 70°C
0 to 95% non-condensing

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Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
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