Advantech PCI-1720 Manual de usuario descargar pdf (Pagina 28)

24 PCI-1720 User's Manual

5.1 Overview

Making correct signal corrections is important for accurate data

transmissions. Since most data acquisition applications involve some

form of voltage measurement, making a sound signal connection will

also protect your equipment against possible damage. This chapter

shows you how to make proper signal connections to use PCI-1720.

5.2 D/A Voltage Output Connections

PCI-1720 supports four channels of D/A voltage output. Only one

output signal wire is used with each channel. The voltage output is

referenced to a common ground (AGND).

There are three types of voltage output connections:

1. Floating load.

2. Grounded load.

3. Differential load with ground.

They are shown in the following illustrations.

Figure 5-1: Floating-load connection for D/A voltage output

D/A

Internal Side

OUT

AGND

External Side

Floating

Load

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Advantech PCI-1720 Manual de usuario Pagina 28