Digital I/O - National Instruments NI 6711 User Manual

Digital I/O

DO Sample Clock
DO.x Direction Control
DI Sample Clock
© National Instruments Corporation
AO Series devices contain eight lines of bidirectional DIO signals that
support the following features:
• Direction and function of each terminal, individually controllable
• High-speed digital waveform generation (NI 6731/6733 only)
• High-speed digital waveform acquisition (NI 6731/6733 only)
Figure 4-1 shows the circuitry of one DIO line.
DO Waveform
Generation FIFO
Static DO
Buffer
Static DI
DI Waveform
Measurement
FIFO
Figure 4-1. AO Series Digital I/O Block Diagram
The DIO terminals are named P0.<0..7> on the I/O connector.
The voltage input and output levels and the current drive levels of the DIO
lines are listed in the specifications of your device.
4-1
4
Weak Pull-Up
I/O Protection P0.x
Analog Output Series User Manual