Programming instructions

Chapter 6 One-Stop Single-Point Acquisition
LabVIEW Data Acquisition Basics Manual 6-2
© National Instruments Corporation
Figure 6-2 shows how you program the Acquire 1 Point from 1 Channel
VI, located in
labview\examples\daq\anlogin\anlogin.llb
,
using the AI Sample Channel VI to acquire data.
Figure 6-2.
Acquiring Data Using the Acquire 1 Point from 1 Channel VI
The Acquire 1 Point from 1 Channel VI initiates an A/D conversion on the
DAQ device and returns the scaled value as an output. The
high limit
is the
highest expected level of the signals you want to measure. The
low limit
is
the lowest expected level of the signals you want to measure. If you want
to acquire multiple point from a single channel, see Chapter 7,
Buffering
Your Way through Waveform Acquisition
.
Single-channel acquisition makes acquiring one channel very basic, but
what if you need to take more than one channel sample? For instance,
you might need to monitor the temperature of the fluid as well as the fluid
level of the tank. In this case, two transducers must be monitored. You can
monitor both transducers using a multiple-channel, single-point acquisition
in LabVIEW.