ADLINK PCI-8124-C - Manual (Page 45)

Operation Theory 35
4.2.2 Position Latch
The position latch function is fulfilled by LTC signal. Once the LTC
signal is active, the counter value of its latch channel will be saved
to latched register at the same time. User’s can read the latch reg-
ister any time.
4.2.3 Linear Function
There are 10 linear functions in PCI-8124-C. Each function is inde-
pendent. It means that linear function range overlapped is possible
when operation. Each linear function has its own comparator and
the comparator could be linked to any one of four counters. By this
features, users can produce many kinds of trigger modes. Please
see the following diagram:
Take three linear functions. Set the trigger interval and range as
shown in the diagram. Set these three linear functions to counter3
and also comparator3. Set three linear functions to trigger output
pin TRG1, TRG1, and TRG2 respectively. After these settings,
when the counters start counting from 0 to 10,000, the trigger pins
will output pulses respectively when the compare conditions are
met inside linear function.