Measurement Computing CIO-DAS08-AOH - Manual (Page 24)

Analog Output:
D/A converter type AD7237 dual DAC
Resolution 12 bits
Number of channels 2
Output Ranges ±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 ±1 LSB max (adjustable to 0 with potentiometer)
Gain error ±1 LSB max (adjustable to 0 with potentiometer)
Differential nonlinearity ±0.9 LSB max
Integral nonlinearity ±1 LSB max
Monotonicity Guaranteed monotonic to 12 bits over temperature
D/A Gain drift ±3 ppm/°C max
D/A Bipolar offset drift ±30 ppm/°C max
D/A Unipolar offset drift ±50 ppm/°C max
D/A pacing Software paced
D/A trigger modes Software
Data transfer Programmed I/O
Settling time (D/A converter)
(full scale step to ±0.5 LSB) 8 µs max
Slew Rate (OP07) 0.3V/µs
Current Drive ±5 mA
Output short-circuit duration indefinite
Output coupling DC
Output impedance 0.1 Ohms max
Miscellaneous Double buffered output latches
Update DACs individually or simultaneously (jumper selectable)
Digital Input / Output
Digital Type (main connector)
Output: 74LS273
Input: 74LS244
Configuration 4 fixed output bits, 3 fixed input bits
Number of channels 4 out, 3 in
Output High 2.7 volts min @
−
0.4 mA
Output Low 0.4 volts max @ 8 mA
Input High 2.0 volts min, 7 volts absolute max
Input Low 0.8 volts max,
−
0.5 volts absolute min
Output power-up / reset state
Digital Type (Digital I/O connector) 82C55
Configuration 2 banks of 8, 2 banks of 4, programmable by bank as input or output
Number of channels 24 I/O
Output High 3.0 volts min @
−
2.5mA
Output Low 0.4 volts max @ 2.5mA
Input High 2.0 volts min, 5.5 volts absolute max
Input Low 0.8 volts max,
−
0.5 volts absolute min
Power-up / reset state Input mode (high impedance)
Interrupts 2 through 7, jumper-selectable
Interrupt enable Programmable
Interrupt sources External (Interrupt In), rising edge
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