National Instruments USB-9265 Manuale utente

USER GUIDE AND SPECIFICATIONS

NI USB-9265

4-Channel, 0–20 mA, 16-Bit Analog Current Output Module

This user guide describes how to use the National Instruments USB-9265

and lists the device specifications.

Introduction

The NI USB-9265 consists of two components: an NI 9265 module and an

NI USB-9162 carrier, as shown in Figure 1.

Figure 1. NI USB-9265 Components

NI 9265

NI USB-9162

NI USB-9265

Hi-SPeed USB Carrier

NI USB-9162

Hi-Speed USB Carrier

NI USB-9162

NI USB-9265 User Guide and Specifications 2 ni.com

Dimensions

Figure 2 shows the NI USB-9265 device dimensions.

Figure 2. NI USB-9265 Device Dimensions in Millimeters (Inches)

Safety Guidelines

Operate the NI USB-9265 only as described in this user guide.

Hot Surface This icon denotes that the component may be hot. Touching this component

may result in bodily injury.

Safety Guidelines for Hazardous Voltages

A hazardous voltage is a voltage greater than 42.4 Vpk or 60 VDC to earth

ground. If hazardous voltages are connected to the module, take the

following precautions.

Caution Ensure that hazardous voltage wiring is performed only by qualified personnel

adhering to local electrical standards.

Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same

module.

Caution Make sure that devices and circuits connected to the module are properly

insulated from human contact.

Hi-Speed USB Carrier

NI USB-9162

120.68 mm

(4.751 in.)

118.26 mm

(4.656 in.)

88.12 mm

(3.469 in.)

25.34 mm

(0.998 in.)

©National Instruments Corporation 3 NI USB-9265 User Guide and Specifications

Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/60 VDC), you

must ensure that devices and circuits connected to the module are properly insulated from

human contact. You must use the NI 9932 connector backshell kit, illustrated in Figure 3

to ensure that the terminals are not accessible.

Figure 3. NI 9932 Connector Backshell

Related Documentation

Each application software package and driver includes information about

writing applications for taking measurements and controlling measurement

devices. Check ni.com/manuals for the most recent hardware

documentation, and refer to Table 1 for a list of locations for driver and

application software documentation. The following document location

references assume you have NI-DAQmx 8.9 or later, and where applicable,

version 7.1 or later of the NI application software.

NI USB-9265 User Guide and Specifications 4 ni.com

Table 1. Related Documentation

Software Document/Description Location/Topic

NI-DAQmx for Windows DAQ Getting Started

Guide—describes how to install

the NI-DAQmx for Windows

software, your NI-DAQmx

supported DAQ device, and how

to confirm that your device is

operating properly.

Start»All Programs»

National Instruments»

NI-DAQ»DAQ Getting

Started Guide

NI-DAQ Readme—lists which

devices are supported by this

version of NI-DAQmx.

Start»All Programs»

National Instruments»

NI-DAQ»NI-DAQ Readme

NI-DAQmx Help—contains

general information about

measurement concepts, key

NI-DAQmx concepts, and

common applications that are

applicable to all programming

environments.

Start»All Programs»

National Instruments»

NI-DAQ»NI-DAQmx Help

LabVIEW Getting Started with

LabVIEW—describes the

LabVIEW graphical programming

environment and the basic

LabVIEW features you use to

build data acquisition and

instrument control application.

Start»All Programs»

National Instruments»

LabVIEW»LabVIEW

Manuals or navigate to the

labview\manuals directory

and open

LV_Getting_Started.pdf

LabVIEW Help—provides

information about LabVIEW

programming concepts,

step-by-step instructions for

using LabVIEW, and reference

information about LabVIEW VIs,

functions, palettes, menus, and

tools.

Help»Search the LabVIEW

Help

©National Instruments Corporation 5 NI USB-9265 User Guide and Specifications

LabVIEW Help Topics Specific to NI-DAQmx

Location Description

From the Contents tab,

Getting Started»Getting

Started with DAQ

Includes overview information and a tutorial to learn how to take an

NI-DAQmx measurement in LabVIEW using the DAQ Assistant.

From the Contents tab,VI

and Function Reference»

Measurement I/O VIs

and Functions

Describes the LabVIEW NI-DAQmx VIs and properties.

From the Contents tab,

Taking Measurements

Contains the conceptual and how-to information you need to acquire

and analyze measurement data in LabVIEW, including common

measurements, measurement fundamentals, NI-DAQmx key

concepts, and device considerations.

LabWindows™/CVI™LabWindows/CVI Help

Data Acquisition book—contains

NI-DAQmx measurement concepts

and step-by-step instructions about

creating a measurement task using

the DAQ Assistant.

Help»Contents, then select

Using LabWindows/CVI»

Data Acquisition»Taking an

NI-DAQmx Measurement in

LabWindows/CVI

LabWindows/CVI Help

NI-DAQmx Library

book—contains NI-DAQmx API

overviews and function reference.

LibraryReference»

NI-DAQmx Library

Measurement Studio/

Microsoft Visual

Studio .NET

Microsoft Visual Studio .NET

Help/NI Measurement Studio

Help—contains NI-DAQmx

methods and properties.

Measurement Studio»

NI Measurement Studio Help

and select NI-DAQmx .NET

Class Library or NI-DAQmx

Visual C++ Class Library

ANSI C without

NI Application Software

NI-DAQmx Help Start»All Programs»

National Instruments»

NI-DAQ»NI-DAQmx Help

NI-DAQmx C Reference

Help—describes the NI-DAQmx

Library functions.

Start»All Programs»

National Instruments»

NI-DAQ»NI-DAQmx C

Reference Help

Table 1. Related Documentation (Continued)

Software Document/Description Location/Topic

NI USB-9265 User Guide and Specifications 6 ni.com

Device Documentation and Specifications

Check ni.com/manuals for the most recent device and software

documentation. If you do not have Web access, NI-DAQmx includes a

Documentation CD that includes documentation available when

NI-DAQmx released.

Training Courses

If you need more help getting started developing an application with

NI products, NI offers training courses. To enroll in a course or obtain

a detailed course outline, refer to ni.com/training.

Technical Support on the Web

For additional support, refer to ni.com/support or zone.ni.com.

.NET Languages without

NI Application Software*

NI-DAQmx .NET Help—contains

conceptual topics for using

NI-DAQmx with Visual C# and

Visual Basic .NET.

Start»All Programs»

National Instruments»

NI-DAQ»NI-DAQmx .NET

Reference Help. Expand

NI Measurement Studio

Help»NI Measurement

Studio .NET Class Library»

Reference to view the function

reference. Expand

NI Measurement Studio

Help»NI Measurement

Studio .NET Class Library»

Using the Measurement

Studio .NET Class Libraries

Visual Studio .NET

Help—contains conceptual topics

for using NI-DAQmx with Visual

C# and Visual Basic .NET.

Help»Contents. Select

Measurement Studio from the

Filtered By drop-down list and

follow the location instructions

for the NI-DAQmx .NET Help.

*With the Microsoft .NET Framework version 1.1 or later, you can use NI-DAQmx to create applications using Visual C#

and Visual Basic .NET without Measurement Studio. You need Microsoft Visual Studio .NET 2003 or Microsoft Visual

Studio 2005 for the API documentation to be installed.

Table 1. Related Documentation (Continued)

Software Document/Description Location/Topic

©National Instruments Corporation 7 NI USB-9265 User Guide and Specifications

Installing the Software

Software support for the NI USB-9265 for Windows Vista/XP is provided

by NI-DAQmx. The DAQ Getting Started Guide, which you can download

at ni.com/manuals, offers NI-DAQmx users step-by-step instructions

for installing software and hardware, configuring channels and tasks, and

getting started developing an application.

Installing Other Software

If you are using other software, refer to the installation instructions that

accompany your software.

Example Programs

The NI-DAQmx media contains example programs that you can use to get

started programming with the NI USB-9265. Refer to the NI-DAQmx for

USB Devices Getting Started Guide that shipped with your device, and

is also accessible from Start»All Programs»National Instruments»

NI-DAQ, for more information.

Mounting the NI USB-9265 to a Panel

Threaded inserts are located in the NI USB-9162 for mounting it to a panel.

Mount the USB-9162 carrier before inserting the NI 9265. Refer to

Figure 4 for dimensions.

Figure 4. Module Mounting Dimensions In Millimeters (Inches)

72.2 mm

(2.84 in.)

85.7 mm

(3.37 in.)

76.1 mm

(3.00 in.)

Threaded Insert

M3 x 0.5

8.5 mm (0.34 in.) Max Depth

NI USB-9265 User Guide and Specifications 8 ni.com

Installing the NI USB-9265 Device

Before installing the device, you must install the software you plan to use

with the device. Refer to the Installing the Software section of this guide

and the documentation included with the software for more information.

Installing the NI 9265 into the NI USB-9162 Carrier

The NI 9265 C Series module and NI USB-9162 carrier are packaged

separately. Refer to Figure 5 while completing the following assembly

steps:

1. Make sure that no signals are connected to the NI 9265 module,

and the USB cable is not attached to the USB-9162 carrier.

2. Remove the protective cover from the 15-pin D-SUB connector.

3. Align the I/O module with the carrier, as shown in Figure 5.

Figure 5. Module Installation

4. Squeeze the latches and insert the NI 9265 module into the

NI USB-9162 carrier.

©National Instruments Corporation 9 NI USB-9265 User Guide and Specifications

5. Press firmly on the connector side of the NI 9265 module until the

latches lock the module into place, as shown in Figure 6.

Figure 6. Locking Module into Place

Connecting the NI USB-9265 to a Computer

Plug one end of the USB cable into the NI USB-9265 and the other end into

an available USB port on the computer. Refer to the NI-DAQmx for USB

Devices Getting Started Guide that shipped with your device, and is also

accessible from Start»All Programs»National Instruments»NI-DAQ,

for more information.

LED Indicator

The NI USB-9265 device has a green LED next to the USB connector. The

LED indicator indicates device status, as listed in Table 2. When the device

is connected to a USB port, the LED blinks steadily to indicate that the

device is initialized and is receiving power from the connection.

If the LED is not blinking, it may mean that the device is not initialized or

the computer is in standby mode. In order for the device to be recognized,

the device must be connected to a computer that has NI-DAQmx installed

on it. If your device is not blinking, make sure your computer has the latest

version of NI-DAQmx installed on it, and the computer is not in standby

mode.

Table 2. LED State/Device Status

LED State Device Status

Not lit Device not connected or in suspend.

On, not blinking Device connected, but no module installed.

Single-blink Operating normally.

NI USB-9265 User Guide and Specifications 10 ni.com

Wiring the NI USB-9265 Device

The NI 9265 has a 10-terminal, detachable screw-terminal connector that

provides connections for four analog output channels.

Caution A high voltage screw terminal backshell must be installed when using hazardous

voltages (>42.4 Vpk, 60 VDC).

You must use 2-wire ferrules to create a secure connection when

connecting more than one wire to a single terminal on the NI USB-9265.

Figure 7. NI USB-9265 Terminal Assignments

The NI USB-9265 has four analog output channels, AO. Each channel has

a common terminal, COM, that is internally connected to the isolated

ground reference of the module. The USB-9265 also has a terminal for an

external power supply, Vsup, and an external power supply common

terminal, Power Supply COM.

Each AO channel has a digital-to-analog converter (DAC) that produces

a current signal. Each channel also has overvoltage and short-circuit

protection. Refer to the Specifications section for more information about

the overvoltage and short-circuit protection. Refer to Figure 8 for an

illustration of the output circuitry for one channel of the NI USB-9265.

Double-blink Operating normally.

Quadruple-blink Device error. Refer to ni.com/support.

Table 2. LED State/Device Status (Continued)

LED State Device Status

AO0

COM0

AO1

COM1

AO2

COM2

AO3

COM3

Vsup

Power Supply COM

Indice

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