National Instruments Data Acquisition Device E Series - Manual (Page 81)

© National Instruments Corporation 3-1 E Series User Manual
3
Analog Output
Figure 3-1 shows the analog output circuitry of E Series devices.
Figure 3-1. Analog Output Block Diagram
Many E Series boards have analog output functionality. E Series boards
that support analog output have two AO channels that are controlled by a
single clock and are capable of waveform generation. Refer to Appendix A,
Device-Specific Information , for specific information about the capabilities
of your device.
Analog Output Circuitry
DACs
Digital-to-analog converters (DACs) convert digital codes to analog
voltages.
DAC FIFO
The DAC FIFO enables analog output waveform generation. It is a
first-in-first-out (FIFO) memory buffer between the computer and the
DACs that allows you to download all the points of a waveform to your
board without host computer interaction.
AO 0
AO 1
DAC0
DAC1
AO FIFO AO Data
AO Sample Clock
Polarity Select
Reference Select