Accuracy; Digital Input / Output; Interrupts; Environmental - Measurement Computing PCI-DAS4020/12 User Manual

PCI-DAS4020/12 User's Guide

Accuracy

Absolute accuracy
Offset error
Gain error
Differential non-linearity
Integral non-linearity
Total analog output error is a combination of gain, offset, integral linearity, and differential linearity error. The
overall absolute worst-case error of the board may be calculated by summing these component errors. Worst
case error is realized only in the unlikely event that each of the component errors are both at their maximum
level, and causing error in the same direction. Though this is very uncommon, it is still possible.

Digital input / output

Digital type (40-pin connector)
Configuration
Number of channels
Output high
Output low
Input high
Input low
Power-up / reset state

Interrupts

Interrupts
Interrupt enable
ADC Interrupt sources
External
External Interrupt Enable

Environmental

Operating temperature range
Storage temperature range
Humidity
Table 9. Analog output accuracy specifications
±13 LSB max
±6 LSB max
±5 LSB max
±1 LSB max
±1 LSB max
Table 10. DIO specifications
8255A
2 banks of 8, 2 banks of 4, programmable by bank as input or output
24 I/O
3.0 volts min @ 2.5 mA
0.4 volts max @ 2.5 mA
2.0 volts min, Vcc + 0.5 volts absolute max
0.8 volts max, GND 0.5 volts absolute min
Input mode (high impedance)
Table 11. Interrupt specifications
INTA# - mapped to IRQn via PCI BIOS at boot-time
Software programmable
DAQ_ACTIVE: Interrupt is generated when a DAQ sequence is active.
DAQ_STOP: Interrupt is generated when A/D Stop Trigger In is detected.
DAQ_DONE: Interrupt is generated when a DAQ sequence completes.
DAQ_FIFO_1/2_FULL:
Interrupt is generated when ADC FIFO is ½ full.
DAQ_SINGLE: Interrupt is generated after each conversion completes.
Interrupt is generated via edge-sensitive transition on the Interrupt In pin on the
40-pin connector. Rising/falling edge polarity selection. The Interrupt In pin is pulled
up to 5 V through a 10 K resistor.
Active low Interrupt Enable signal on the 40-pin connector. The Interrupt Enable pin
is pulled up to 5 V through a 10 K resistor.
Table 12. Environmental specifications
0 to 70 °C
40 to 100 °C
0 to 90% non-condensing
25
Specifications