National Instruments NI 9421 Getting Started Download Page 7

Caution

 The enclosure must have a door or cover accessible only by the

use of a tool.

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory requirements and limits

for electromagnetic compatibility (EMC) stated in the product specifications. These

requirements and limits provide reasonable protection against harmful interference

when the product is operated in the intended operational electromagnetic

environment.
This product is intended for use in industrial locations. However, harmful

interference may occur in some installations, when the product is connected to a

peripheral device or test object, or if the product is used in residential or

commercial areas. To minimize interference with radio and television reception and

prevent unacceptable performance degradation, install and use this product in strict

accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved

by National Instruments could void your authority to operate it under your local

regulatory rules.

Special Conditions for Marine Applications

Some products are approved for marine (shipboard) applications. To verify marine

approval certification for a product, visit 

ni.com/product-certifications

, search by

model number, and click the appropriate link.

Notice

 In order to meet the EMC requirements for marine applications,

install the product in a shielded enclosure with shielded and/or filtered

power and input/output ports. In addition, take precautions when

designing, selecting, and installing measurement probes and cables to

ensure that the desired EMC performance is attained.

© National Instruments

7

NI-9421 Getting Started

Summary of Contents for NI 9421

Page 1: ...NI 9421 Getting Started 2022 07 06...

Page 2: ...UB Safety Voltages 5 Safety Guidelines for Hazardous Locations 5 Electromagnetic Compatibility Guidelines 7 Special Conditions for Marine Applications 7 Preparing the Environment 7 Connecting the NI 9...

Page 3: ...ion du produit de toute autre fa on que celle sp cifi e risque de l endommager et de compromettre la protection de s curit int gr e Safety Guidelines for Hazardous Voltages If hazardous voltages are c...

Page 4: ...haute tension dangereuse est appliqu e aux bornes du produit vous devez vous assurer que les appareils et les circuits auxquels il est connect sont correctement isol s de tout contact humain Caution Y...

Page 5: ...by a 5 s dielectric withstand test Safety Guidelines for Hazardous Locations The NI 9421 is suitable for use in hazardous locations and hazardous locations and nonhazardous locations only Follow these...

Page 6: ...I 9421 is marked and is suitable for use in Zone 2 hazardous locations in ambient temperatures of 40 C Ta 70 C If you are using the NI 9421 in Gas Group IIC hazardous locations you must use the device...

Page 7: ...ception and prevent unacceptable performance degradation install and use this product in strict accordance with the instructions in the product documentation Furthermore any changes or modifications t...

Page 8: ...e You must use 2 wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the NI 9421 with screw terminal or NI 9421 with spring terminal NI 9421 Signals...

Page 9: ...applies a voltage or drives a current that is in the input OFF range to DI If no device is connected to DI the channel registers as OFF LED Indications Each channel has an LED that indicates the stat...

Page 10: ...earn about NI service offerings such as calibration options repair and replacement Visit ni com register to register your NI product Product registration facilitates technical support and ensures that...

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