Digital Output (Ttl Do) - Advantech PCIE-1753 User Manual

96-ch digital i/o pci express card

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3.3.2

Digital Output (TTL DO)

A digital input/output (DI/O) channel can be configured by software to perform digital

input measurement, which is the power-on default configuration, or digital output

generation. When performing digital output generation, a voltage logic level is gener-

ated between the digital output (DO) terminal and the digital ground (DGND) termi-

nal. This is shown in Figure 3.6.

Figure 3.6 Digital output signal connection

Each digital output channel can source or sink only a finite amount of current. If this

limit is exceeded, the output voltage will not stay in the specified voltage logic level.

Refer to the device specifications for the maximum source and sink current values.

PCIE-1753 User Manual

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