Programming instructions

Chapter 24 Generating a Square Pulse or Pulse Trains
© National Instruments Corporation 24-13 LabVIEW Data Acquisition Basics Manual
Figure 24-16.
Diagram of Cont Pulse Train (8253) VI
Generating a Finite Pulse Train
How you generate a finite pulse varies depending upon which counter chip
your DAQ hardware has. Most National Instruments DAQ devices contain
one of three different counter chips: the DAQ-STC, the Am9513, or the
8253/54 chip. If you are not sure which chip your device uses, refer to your
hardware manual.
You can use the Easy I/O VI, Generate Pulse Train, or a stream of
Intermediate VIs to generate a finite pulse train. With either technique,
you must use two counters as shown in the connection diagram in
Figure 24-17. Refer to Chapter 27, Counting Signal Highs and Lows, for
more information on how to determine
counter-1
and how to use the
adjacent counter VI. The maximum number of pulses in the pulse train is
2
16
– 1, for Am9513 devices and 2
24
– 1 for DAQ-STC devices.