User manual

Chapter 3 Software Overview

DAQCard-500/700, 516 Device, and LPM Device

Counter/Timer Signals

For these devices, counter 0 produces the sample interval for data

acquisition timing. If data acquisition is not in progress, you can call the

ICTR

functions to use counter 0 as a general-purpose counter. Because the

CLOCK0 input is connected to a 1 MHz oscillator, the timebase for

counter 0 is fixed.

External Multiplexer Support (AMUX-64T)

You can expand the number of analog input signals measurable by the

MIO and AI devices with an external multiplexer device (AMUX-64T).

Refer to the AMUX-64T External Multiplexer Devices chapter in the DAQ

Hardware Overview Guide, for more information on using the AMUX-64T

with your MIO and AI device. See the AMUX-64T User Manual for more

information on the external multiplexer device.

Basic Building Blocks

Most of the buffered data acquisition applications are made up of four

building blocks, as shown in Figure 3-3. However, depending on the

specific devices and applications you have, the NI-DAQ functions

comprising each building block vary. Typical applications can include

the NI-DAQ functions in each of their four building blocks.

Figure 3-3. Buffered Data Acquisition Basic Building Blocks

Configuration

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