National Instruments 9775 Manual de usuario

NI-9775

GETTING STARTED GUIDE

NI 9775

4-Ch, ±10 V, 20 MS/s, 14-Bit Digitizer

This document explains how to connect to the NI 9775.

Note Before you begin, complete the software and

hardware installation procedures in your chassis

documentation.

Note The guidelines in this document are specific to

the NI 9775. The other components in the system might

not meet the same safety ratings. Refer to the

documentation for each component in the system to

determine the safety and EMC ratings for the entire

system.

Safety Guidelines

Operate the NI 9775 only as described in this document.

Caution Do not operate the NI 9775 in a manner not

specified in this document. Product misuse can result in

a hazard. You can compromise the safety protection

built into the product if the product is damaged in any

way. If the product is damaged, return it to NI for

repair.

2| ni.com | NI 9775 Getting Started Guide

Safety Voltages

Connect only voltages that are within Measurement Category O.

Isolation

Channel-to-channel None

Channel-to-earth

ground

None

Note Measurement Categories CAT I and CAT O are

equivalent. These test and measurement circuits are not

intended for direct connection to the MAINS building

installations of Measurement Categories CAT II,

CAT III, or CAT IV.

Caution Do not connect the NI 9775 to signals or use

for measurements within Measurement Categories II,

III, or IV.

Safety Guidelines for Hazardous Locations

The NI 9775 is suitable for use in Class I, Division 2, Groups A,

B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4

and Ex nA IIC T4 hazardous locations; and nonhazardous

NI 9775 Getting Started Guide | © National Instruments | 3

locations only. Follow these guidelines if you are installing the

NI 9775 in a potentially explosive environment. Not following

these guidelines may result in serious injury or death.

Caution Do not disconnect I/O-side wires or

connectors unless power has been switched off or the

area is known to be nonhazardous.

Caution Do not remove modules unless power has

been switched off or the area is known to be

nonhazardous.

Caution Substitution of components may impair

suitability for Class I, Division 2.

Caution For Division 2 and Zone 2 applications,

install the system in an enclosure rated to at least IP54

as defined by IEC/EN 60079-15.

Special Conditions for Hazardous Locations Use in

Europe and Internationally

The NI 9775 has been evaluated as Ex nA IIC T4 Gc equipment

under DEMKO 12 ATEX 1202658X and is IECEx UL 14.0089X

certified. Each NI 9775 is marked II 3G and is suitable for use

in Zone 2 hazardous locations, in ambient temperatures of -40 °C

4| ni.com | NI 9775 Getting Started Guide

≤ Ta ≤ 70 °C. If you are using the NI 9775 in Gas Group IIC

hazardous locations, you must use the device in an NI chassis that

has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or

Ex nL IIC T4 equipment.

Caution You must make sure that transient

disturbances do not exceed 140% of the rated voltage.

Caution The system shall only be used in an area of

not more than Pollution Degree 2, as defined in

IEC/EN 60664-1.

Caution The system shall be mounted in an

ATEX/IECEx-certified enclosure with a minimum

ingress protection rating of at least IP54 as defined in

IEC/EN 60079-15.

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

NI 9775 Getting Started Guide | © National Instruments | 5

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.

Caution To ensure the specified EMC performance,

operate this product only with shielded cables and

accessories. Do not use unshielded cables or

accessories unless they are installed in a shielded

enclosure with properly designed and shielded input/

output ports and connected to the product using a

shielded cable. If unshielded cables or accessories are

6| ni.com | NI 9775 Getting Started Guide

not properly installed and shielded, the EMC

specifications for the product are no longer guaranteed.

Caution To ensure the specified EMC performance,

the length of all I/O cables must be no longer than 30 m

(100 ft).

Special Conditions for Marine Applications

Some products are Lloyd’s Register (LR) Type Approved for

marine (shipboard) applications. To verify Lloyd’s Register

certification for a product, visit ni.com/certification and search

for the LR certificate, or look for the Lloyd’s Register mark on

the product.

Caution 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.

NI 9775 Getting Started Guide | © National Instruments | 7

Preparing the Environment

Ensure that the environment in which you are using the NI 9775

meets the following specifications.

Operating temperature

(IEC 60068-2-1, IEC 60068-2-2)

-40 °C to 70 °C

Operating humidity

(IEC 60068-2-78)

10% RH to 90% RH,

noncondensing

Pollution Degree 2

Maximum altitude 5,000 m

Indoor use only.

Note Refer to the device datasheet on ni.com/manuals

for complete specifications.

8| ni.com | NI 9775 Getting Started Guide

NI 9775 Pinout

AI0

CHASSIS

GND

AI1

CHASSIS

GND

AI2

CHASSIS

GND

AI3

CHASSIS

GND

NI 9775 Getting Started Guide | © National Instruments | 9

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