Measurement-computing PCI-DIO48H/CTR15 Instrukcja Użytkownika Pobierz pdf (Strona 18)

6 SPECIFICATIONS

Typical for 25°C unless otherwise specified.

POWER CONSUMPTION

+5V Operating 1395 mA typical, 2091 mA max

DIGITAL INPUT/OUTPUT

Digital Type 8255 emulation, Mode 0

Output: 74S244

Input: 74LS373

Number of channels 48 I/O

Configuration 4 banks of 8, 4 banks of 4, programmable by

bank as input or output

Output High 2.4 volts min @ -15mA

Output Low 0.5 volts max @ 64 mA

Input High 2.0 volts min, 7 volts absolute max

Input Low 0.8 volts max, -0.5 volts absolute min

Power-up / reset state Input mode (high impedance)

Interrupts INTA# - mapped to IRQn via PCI BIOS at

boot-time, level sensitive - active low

Interrupt enable External enable (IRQEN), active low Internal

enable - programmable enable/disable through

PCI9052 (enabled by default)

Interrupt sources External source (IRQIN), polarity programmable

through PCI9052 (active low by default)

COUNTER SECTION

Counter type 82C54

Configuration 15 down-counters per 82C54, 16 bits each

82C54A:

Counter 0 - User counter #1

Source: Available at user connector (CTR1CLK)

Gate: Available at user connector (CTR1GATE)

Output: Available at user connector (CTR1OUT)

Counter 1 - User counter #2

Source: Available at user connector (CTR2CLK)

Gate: Available at user connector (CTR2GATE)

Output: Available at user connector (CTR2OUT)

Counter 2 - User counter #3

Source: Available at user connector (CTR3CLK)

Gate: Available at user connector (CTR3GATE)

Output: Available at user connector (CTR3OUT)

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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Measurement-computing PCI-DIO48H/CTR15 Instrukcja Użytkownika Strona 18