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NI CompactDAQ cDAQ-917 Series User Manual

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NI cDAQ
TM
-917x
User Manual
NI CompactDAQ cDAQ-9171/9174/9178 USB Chassis
NI cDAQ-917x User Manual
ni.com/manuals
DeutschFrançais
May 2013
372838D-01

Table of Contents

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NI CompactDAQ cDAQ-917 Series Specifications

General IconGeneral
BrandNI
ModelCompactDAQ cDAQ-917 Series
CategoryChassis
LanguageEnglish

Summary

Important Information

Warranty

Details warranty period, repair, and replacement terms for NI devices and software.

Product Use Warning

Critical warning against using products in life support or surgical implants, emphasizing system failure risks.

Copyright

States publication cannot be reproduced or transmitted without prior written consent from the corporation.

Trademarks

Refers to NI Trademarks and Logo Guidelines for detailed information on NI's trademarks.

Chapter 1 Getting Started with the cDAQ Chassis

Safety Guidelines

General safety precautions and guidelines for operating the NI cDAQ chassis.

Unpacking

Instructions for safely unpacking the cDAQ chassis to prevent electrostatic discharge damage.

Installing the cDAQ Chassis

Step-by-step guide for installing the cDAQ chassis and associated software.

Mounting the cDAQ Chassis

Procedures for mounting the cDAQ chassis on a desktop, panel, or DIN rail.

NI cDAQ Chassis Features

Description of key chassis features like LEDs, grounding screw, and connectors.

Cables and Accessories

Information on available cables and accessories for the cDAQ chassis and ordering details.

Using the cDAQ Chassis

Explains how to use the cDAQ chassis with C Series I/O modules for measurements.

Chapter 2 Analog Input

Analog Input Triggering Signals

How triggers initiate and control analog input data acquisition events.

Analog Input Timing Signals

Details the timing signals essential for analog input tasks, like sample clocks.

AI Sample Clock Signal

Describes the AI Sample Clock signal for acquiring analog input data points from channels.

Scanned Modules

Explains data acquisition with multiplexer-based analog input modules.

Sigma-Delta Modules

Details behavior of sigma-delta modules requiring oversampling clocks for synchronization.

Slow Sample Rate Modules

Information on modules for measuring slowly varying signals like temperature.

Chapter 3 Analog Output

Analog Output Data Generation Methods

Explains software-timed and hardware-timed data generation for analog output.

Hardware-Timed Generations

Details hardware-timed generation advantages: speed, determinism, and hardware triggering.

Buffered Analog Output

Describes using onboard FIFO buffers for analog output data transfer.

Analog Output Triggering Signals

Explains AO Start and Pause triggers for controlling waveform generation timing.

Analog Output Timing Signals

Details timing signals for AO waveform generation, including sample clock and timebase.

AO Sample Clock Signal

Describes the AO Sample Clock signal for updating analog output channels.

Chapter 4 Digital Input/Output and PFI

Serial DIO versus Parallel DIO Modules

Compares serial DIO for slow signals and parallel DIO for fast signals.

Digital Input

Covers acquiring digital waveforms and using DI Sample Clock.

Digital Input Triggering Signals

Explains triggers for starting/stopping digital input acquisitions.

Digital Input Timing Signals

Details timing signals for digital input operations.

Digital Input Filters

Describes programmable debouncing filters for digital input lines to reduce jitter.

Digital Output

Covers generating digital output using C Series I/O modules.

Digital Output Data Generation Methods

Explains software-timed and hardware-timed digital output generation.

Buffered Digital Output

Describes using onboard FIFO buffers for digital output data transfer.

PFI

Explains configuration of Programmable Function Interface (PFI) terminals for timing and control.

PFI Filters

Details programmable debouncing filters for PFI signals to reduce input jitter.

Chapter 5 Counters

Counter Timing Engine

Explains the counter timing engine and its capabilities for measurements and pulse generation.

Counter Input Applications

Lists various applications for counter inputs, including edge counting and measurements.

Counting Edges

Details how counters count rising or falling edges on the Source input.

Pulse-Width Measurement

Explains how counters measure the duration of a pulse using the Gate signal.

Frequency Measurement

Describes methods for measuring signal frequency using one or two counters.

Counter Output Applications

Lists various counter output applications like pulse generation and frequency division.

Counter Triggering

Explains arm start, start, and pause triggers for counter operations.

Other Counter Features

Covers features like cascading counters, prescaling, and synchronization modes.

Chapter 6 Digital Routing and Clock Generation

Digital Routing

Describes the circuitry managing data flow and routing timing/control signals.

Clock Routing

Illustrates the cDAQ chassis clock routing circuitry and timebases.

80 MHz Timebase

Explains the use of the 80 MHz Timebase as a source input for counters.

20 MHz Timebase

Details the 20 MHz Timebase generation and its function in timing signals.

100 kHz Timebase

Details the 100 kHz Timebase generation and its use in timing signals.

Appendix A Where to Go from Here

Example Programs

Lists example programs to help users get started with NI-DAQmx and C Series modules.

Related Documentation

Lists relevant documents for developing applications and understanding device capabilities.

NI cDAQ Chassis Documentation

Provides links to Quick Start, Specifications, and Calibration Procedure documents.

Appendix B Technical Support and Professional Services

Support

Provides resources for technical support, including self-help and discussion forums.

Training and Certification

Information on NI training courses and certification programs.

System Integration

Information on National Instruments Alliance Partner members for project assistance.

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