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Pulse Generation with KPCI3100 Driver
Below is shown the VB code for Pulse Generation with a board covered by KPCI3100
driver. This code snippet assumes the driver has already been opened and the board
initialized.
With DriverLINXSR1
.Req_op = DL_START
.Req_mode = DL_POLLED
.Req_subsystem = DL_CT
.Evt_Str_type = DL_COMMAND
.Evt_Tim_type = DL_RATEEVENT
.Evt_Stp_type = DL_COMMAND
.Evt_Tim_rateClock = DL_INTERNAL1
.Evt_Tim_rateChannel = 0
.Evt_Tim_rateGate = DL_ENABLED
.Evt_Tim_rateMode = DL_PULSEGEN
.Evt_Tim_rateOnCount = duration ` how long the pulse will last
.Evt_Tim_ratePeriod = delay ` how long from rising edge of gate until pulse starts
.Evt_Tim_ratePulses = 1
.Refresh
End With
Two properties, rateOnCount and ratePeriod, control the duty cycle of the pulse. For
both properties, the value is expressed in terms of `tics' of the selected rateClock. If
using the internal timebase, this would be a 20MHz clock.
The sum of rateOnCount and ratePeriod cannot exceed 65535, the maximum value of a
single 16bit counter.
An operational difference has been discovered between the current revision (3100-
850A03) of the driver and the previous one (3100-850A02).
With the old version (3100-850A02), the delay is determined by the difference of
ratePeriod