Measurement-specialties PCI-DIO24 Bedienungsanleitung PDF herunterladen (Seite 15)

Chapter 4

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Power consumption

Table 1. Power consumption specifications

+5V operating

240 typical, 350 max

Digital input / output

Table 2. Digital input / output specifications

Digital type

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

3.7 volts min @ -2.5 mA

Output low

0.4 volts max @ 2.5 mA

Input high

2.2 volts min, 5.3 volts absolute max

Input low

0.8 volts max, -0.3 volts absolute min

Power-up / reset state

Input mode (high impedance)

Interrupts

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

Interrupt enable

External (IR ENABLE, active low, disabled by default through internal resistor to

TTL high) and programmable through PCI9052;

0 = disabled, 1 = enabled (default)

Interrupt sources

External source (IR INPUT), polarity programmable through PCI9052;

1 = active high, 0 = active low (default)

Environmental

Table 3. Environmental specifications

Operating temperature range

0 to 50 °C

Storage temperature range

-20 to 70 °C

Humidity

0 to 90% non-condensing

1 2 ... 10 11 12 13 14 15 16 17 18

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