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National Instruments Corporation
5-1
5
Analog Output
Many M Series devices have analog output functionality. M Series devices
that support analog output have either two or four AO channels that are
controlled by a single clock and are capable of waveform generation. Refer
to Appendix A,
, for information about the
capabilities of your device.
Figure 5-1 shows the analog output circuitry of M Series devices.
Figure 5-1.
M Series Analog Output Circuitry
The main blocks featured in the M Series analog output circuitry are as
follows:
•
DACs
—Digital-to-analog converters (DACs) convert digital codes to
analog voltages.
•
AO FIFO
—The AO FIFO enables analog output waveform
generation. It is a first-in-first-out (FIFO) memory buffer between the
computer and the DACs. It allows you to download the points of a
waveform to your M Series device without host computer interaction.
AO 2
AO 3
DAC2
DAC3
AO Data
AO FIFO
AO Sample Clock
AO Offset Select
AO Reference Select
AO 0
AO 1
DAC0
DAC1
