Advantech PCI-1710HGU Manuel d'utilisateur télécharger pdf (Page 39)

33 Appendix A

A.4 Digital Output

A.5 Counter/Timer

Output Channels

Output Voltage

Low 0.8 V max.@ +8.0mA (sink)

High 2 V min.@ -0.4mA(source)

Counter chip

82C54 or equivalent

Channels

3 channels, 2 channels are permanently configured as

programmable pacers; 1 channel is free for user appli-

cation

Resolution

16-bit

Compatibility

TTL level

Base Clock

Channel 2: Takes input from output of channel 1

Channel 1: 10MHz

Channel 0: Internal 1MHz or external clock (10 MHz)

max Selected by software

Max. Input

Frequency

10MHz

Clock Input

Low 0.8 V max.

High 2.0 V min.

Gate Input

Low 0.8 V max.

High 2.0 V min.

Counter Output

Low 0.5 V max.@+24 mA

High 2.4 V min.@-15 mA

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Advantech PCI-1710HGU Manuel d'utilisateur Page 39