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 National Instruments Corporation

5

NI USB-9201/9221 User Guide and Specifications

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

The 

Data Acquisition

 book of the L

abWindows/CVI Help

 contains 

measurement concepts for NI-DAQmx. This book also contains 

Taking an 

NI-DAQmx Measurement in LabWindows/CVI

, which includes 

step-by-step instructions about creating a measurement task using the DAQ 
Assistant. In LabWindows

/CVI

, select 

Help»Contents

, then select 

Using LabWindows/CVI»Data Acquisition

.

The 

NI-DAQmx Library

 book of the 

LabWindows/CVI Help

 contains API 

overviews and function reference for NI-DAQmx. 

Select Library 

Reference»NI-DAQmx Library

 in the 

LabWindows/CVI Help

.

Measurement Studio

If you program your NI-DAQmx-supported device in Measurement Studio 
using Visual C++, Visual C#, or Visual Basic .NET, you can interactively 
create channels and tasks by launching the DAQ Assistant from MAX or 
from within Visual Studio .NET. You can generate the configuration code 
based on your task or channel in Measurement Studio. Refer to the 

DAQ 

Assistant Help

 for additional information about generating code. You also 

can create channels and tasks, and write your own applications in your 
ADE using the NI-DAQmx API.

For help with NI-DAQmx methods and properties, refer to the NI-DAQmx 
.NET Class Library or the NI-DAQmx Visual C++ Class Library included 
in the 

NI Measurement Studio Help

. For general help with programming in 

Measurement Studio, refer to the 

NI Measurement Studio Help

, which is 

fully integrated with the Microsoft Visual Studio .NET help. To view 
this help file in Visual Studio. NET, select 

Measurement Studio»

NI Measurement Studio Help

.

To create an application in Visual C++, Visual C#, or Visual Basic .NET, 
follow these general steps:

1.

In Visual Studio .NET, select 

File»New»Project

 to launch the New 

Project dialog box.

2.

Find the Measurement Studio folder for the language you want to 
create a program in.

3.

Choose a project type. You add DAQ tasks as a part of this step.

Summary of Contents for NI USB-9201

Page 1: ...d to inclusively as the NI USB 9201 9221 Introduction The NI USB 9210 9221 data acquisition device provides a USB interface for eight channels of 12 bit analog inputs with integrated signal conditioni...

Page 2: ...in Millimeters Inches Figure 3 NI USB 9201 9221 D SUB Devices in Millimeters Inches Hi Speed USB Carrier NI USB 9162 140 23 mm 5 521 in 137 82 mm 5 426 in 120 68 mm 4 751 in 118 26 mm 4 656 in 88 12...

Page 3: ...201 9221 is not certified for use in hazardous locations Safety Guidelines for Hazardous Voltages You can connect hazardous voltages to the NI USB 9201 9221 with the screw terminal only Do not connect...

Page 4: ...onments Select Start All Programs National Instruments NI DAQ NI DAQmx Help LabVIEW If you are a new user use the Getting Started with LabVIEW manual to familiarize yourself with the LabVIEW graphical...

Page 5: ...or Visual Basic NET you can interactively create channels and tasks by launching the DAQ Assistant from MAX or from within Visual Studio NET You can generate the configuration code based on your task...

Page 6: ...entation To view the NI DAQmx NET documentation go to Start Programs National Instruments NI DAQ NI DAQmx NET Reference Help Expand NI Measurement Studio Help NI Measurement Studio NET Class Library R...

Page 7: ...tallation instructions that accompany your software Example Programs The NI DAQmx CD contains example programs that you can use to get started programming with the NI USB 9201 9221 Refer to the NI DAQ...

Page 8: ...gure 4 Module Installation 4 Squeeze the latches and insert the NI 9201 9221 module into the NI USB 9162 carrier 5 Press firmly on the connector side of the NI 9201 9221 module until the latches lock...

Page 9: ...nts NI DAQ for more information LED Indicator The NI USB 9201 9221 device has a green LED next to the USB connector The LED indicator indicates device status as listed in Table 1 When the device is co...

Page 10: ...cted or in suspend On not blinking Device connected but no module installed Single blink Operating normally Double blink Connected to USB Full Speed port Device performance might be affected Refer to...

Page 11: ...or pin COM that is internally connected to the isolated ground reference of the module Refer to Table 3 for the terminal assignments of the NI USB 9201 9221 with screw terminal Refer to Figure 7 for...

Page 12: ...nnect the ground signal to COM Figure 8 Connecting a Single Ended Voltage Signal to the NI USB 9201 9221 Refer to your software documentation accessible from Start All Programs National Instruments NI...

Page 13: ...e installed when using hazardous voltages 42 4 Vpk 60 VDC Refer to Figure 9 while completing the following steps to assemble the backshell 1 Connect the leads to the screw terminal and secure with the...

Page 14: ...Circuitry for One Channel Specifications The following specifications are typical for the range 0 to 60 C unless otherwise noted All voltages are relative to COM unless otherwise noted Input Characte...

Page 15: ...Vrms 5 seconds max D SUB 1 000 Vrms 5 seconds max Overvoltage protection AI to COM 100 V Accuracy2 1 Refer to the Safety section for details about safe operating voltages 2 Excludes noise Error Percen...

Page 16: ...9221 950 kHz min Input impedance Resistance 1 M Capacitance 5 pF Input noise code centered RMS 0 7 LSBrms Peak to peak 5 LSB No missing codes 12 bits DNL 0 9 to 1 5 LSB INL 1 5 LSB Crosstalk 75 dB 10...

Page 17: ...Safety If you need to clean the module wipe it with a dry towel Safety Voltages Maximum Voltage Connect only voltages that are within these limits AI to COM 60 VDC Isolation Voltages for NI USB 9201 9...

Page 18: ...rcuits powered by regulated low voltage sources and electronics Do not use this module with Measurement Category II III or IV voltages Safety Standards This product is designed to meet the requirement...

Page 19: ...Low Voltage Directive safety 2004 108 EC Electromagnetic Compatibility Directive EMC Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance informat...

Page 20: ...formation about WEEE recycling centers and National Instruments WEEE initiatives visit ni com environment weee htm Calibration You can obtain the calibration certificate for the NI USB 9201 9221 at ni...

Page 21: ...ational Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the...

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