National Instruments cDAQ-9172 User Manual download pdf (Page 18)

NI cDAQ-9172 User Guide and Specifications 18 ni.com

Using the NI cDAQ-9172

The cDAQ system consists of three parts: C Series I/O modules, the cDAQ

module interface, and the USB-STC2. These components digitize signals,

perform D/A conversions to generate analog output signals, measure and

control digital I/O signals, and provide signal conditioning.

Figure 8. NI cDAQ-9172 Block Diagram

C Series I/O Modules

National Instruments C Series I/O modules provide built-in signal

conditioning and screw terminal, spring terminal, BNC, D-SUB, or

RJ-50 connectors. A wide variety of I/O types are available, allowing

you to customize the cDAQ system to meet your application needs.

C Series I/O modules are hot-swappable and automatically detected by the

NI cDAQ-9172 chassis. I/O channels are accessible using the NI-DAQmx

driver software.

Because the modules contain built-in signal conditioning for extended

voltage ranges or industrial signal types, you can usually make your

wiring connections directly from the C Series I/O modules to your

sensors/actuators. In most cases, the C Series I/O modules provide isolation

from channel-to-earth ground.

For more information about which C Series I/O modules are compatible

with the NI cDAQ-9172 chassis, refer to the KnowledgeBase document,

C Series Modules Supported in the NI cDAQ-9172 CompactDAQ.

C Series

I/O Module

C Series

I/O Module

C Series

I/O Module

cDAQ Module

Interface

USB-

STC2

USB

2.0

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National Instruments cDAQ-9172 User Manual Page 18