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Power connections, Figure 2-12. digital i/o connections, Power connections -32 – National Instruments AT-MIO-16X User Manual

Page 54: Figure 2-12. digital i/o connections -32

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Chapter 2

Configuration and Installation

AT-MIO-16X User Manual

2-32

© National Instruments Corporation

Figure 2-12. Digital I/O Connections

In Figure 2-12, port A is configured for digital output, and port B is
configured for digital input. Digital input applications include receiving
TTL signals and sensing external device states such as the state of the
switch in Figure 2-12. Digital output applications include sending TTL
signals and driving external devices such as the LED shown in
Figure 2-12.

Power Connections

The I/O connector provides +5 V from the PC power supply. This +5 V
is referenced to DIG GND and can be used to power external digital
circuitry.

Power rating

1.0 A at +5 V ±10 %, fused

LED

+5 V

TTL Signal

+5 V

Port A

ADIO<3..0>

Port B

BDIO<3..0>

DIG GND

Switch

I/O Connector

AT-MIO-16X Board