Measurement-computing PCI-DAS08 Manuale Utente Scaricare il pdf (Pagina 16)

PCI-DAS08 User's Guide Specifications

Interrupt sources External source (EXT INT)

Polarity programmable through PCI controller:

1 = active high

0 = active low (default)

Counter section

Table 3. Counter specifications

Parameter Specification

Counter type 82C54 device

Configuration 3 down counters, 16-bits each

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 or Interrupt Pacer Source: Buffered PCI clock (33 MHz) divided by 8.

Gate: Available at user connector (CTR3GATE)

Output: Available at user connector (CTR3OUT) and may be

software configured as Interrupt Pacer.

Clock input frequency 10 MHz max

High pulse width (clock input) 30 ns min

Low pulse width (clock input) 50 ns min

Gate width high 50 ns min

Gate width low 50 ns min

Input low voltage 0.8 V max

Input high voltage 2.0 V min

Output low voltage 0.4 V max

Output high voltage 3.0 V min

Power consumption

Table 4. Power consumption specifications

Parameter Specification

+5 V operating (A/D converting to FIFO) 251 mA typical, 436 mA max

+12 V 13 mA typical, 19 mA max

-12 V 17 mA typical, 23 mA max

Environmental

Table 5. Environmental specifications

Parameter Specification

Operating temperature range 0 to 50 °C

Storage temperature range -20 to 70 °C

Humidity 0 to 90% non-condensing

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Measurement-computing PCI-DAS08 Manuale Utente Pagina 16