Measurement-computing PCI-DAS4020/12 Bedienungsanleitung PDF herunterladen (Seite 25)

PCI-DAS4020/12 User's Guide Specifications

Accuracy

Table 9. Analog output accuracy specifications

Absolute accuracy

±13 LSB max

Offset error

±6 LSB max

Gain error

±5 LSB max

Differential non-linearity

±1 LSB max

Integral non-linearity

±1 LSB max

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

Table 10. DIO specifications

Digital type (40-pin connector)

8255A

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 @ 2.5 mA

Output low

0.4 volts max @ 2.5 mA

Input high

2.0 volts min, Vcc + 0.5 volts absolute max

Input low

0.8 volts max, GND 0.5 volts absolute min

Power-up / reset state

Input mode (high impedance)

Interrupts

Table 11. Interrupt specifications

Interrupts

INTA# - mapped to IRQn via PCI BIOS at boot-time

Interrupt enable

Software programmable

ADC Interrupt sources

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.

External

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.

External Interrupt Enable

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.

Environmental

Table 12. Environmental specifications

Operating temperature range

0 to 70 °C

Storage temperature range

40 to 100 °C

Humidity

0 to 90% non-condensing

1 2 ... 20 21 22 23 24 25 26 27 28

Kommentare zu diesen Handbüchern

Keine Kommentare

Measurement-computing PCI-DAS4020/12 Bedienungsanleitung Seite 25

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Hardware Measurement-computing PCI-DAS4020/12