ADLINK PCI-8124-C - Manual (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.