Adlink PCI-8124-C Manuel d'utilisateur télécharger pdf (Page 41)

Operation Theory 31

4.1.3 Homing with EZ Signal

The PCI-8124-C can clear the counter value as zero according to

the edge of EZ signal. Homing by edge can let users meet best

homing positioning purpose. Rising or falling edge is supported.

The following diagram shows the case about the homing by rising

edge.

4.1.4 Trigger Pulse Width

For different applications, the trigger pulse width requirement is

different. As for this reason, the trigger pulse width can be adjust-

able. The available values are from 0.1µs to 3.2765ms. The maxi-

mum frequency is up to 5 MHz.

4.1.5 Linear Function

Linear function is used to generate a new comparing position by a

fixed incremental value linear function, Y=Y’+A. Y means a calcu-

lated comparing position, the linear data. Y’ means a previous

comparing position. Every time the position is compared, a new

data is calculated by adding ‘A’, the fixed incremental value. This

mechanism makes a the continuous triggering function.

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Adlink PCI-8124-C Manuel d'utilisateur Page 41