background image

 

LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle 
logo are trademarks of National Instruments Corporation. Refer to the 

Trademark Information 

at 

ni.com/trademarks

 for other National Instruments trademarks. Other product and company 

names mentioned herein are trademarks or trade names of their respective companies. For patents 
covering National Instruments products/technology, refer to the appropriate location: 

Help»Patents

 

in your software, the 

patents.txt

 file on your media, or the 

National Instruments Patent Notice

 

at

ni.com/patents

. Refer to the 

Export Compliance Information 

at 

ni.com/legal/

export-compliance

 for the National Instruments global trade compliance policy and how to 

obtain relevant HTS codes, ECCNs, and other import/export data.

© 2011 National Instruments Corporation. All rights reserved.

373489A-01

Oct11

Where to Go for Support

The National Instruments Web site is your complete resource for technical support. At 

ni.com/

support

 you have access to everything from troubleshooting and application development self-help 

resources to email and phone assistance from NI Application Engineers. National Instruments corporate 
headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. National 
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 calling 

instructions or dial 512 795 8248. For telephone support outside the United States, visit the Worldwide 
Offices section of 

ni.com/niglobal

 to access the branch office Web sites, which provide up-to-date 

contact information, support phone numbers, email addresses, and current events.

Summary of Contents for USB-443 Series

Page 1: ...tion Procedures 4 Initial Setup 4 Changing Coupling on NI USB 443x Devices 5 Verification 6 Analog Input Performance Verification 6 AI Offset Verification 6 AI AC Coupled Gain Accuracy Verification 7...

Page 2: ...ed guides provides instructions for installing and configuring NI USB 443x devices NI DAQmx C Reference Help contains the C reference and general information about measurement concepts NI USB 443x Spe...

Page 3: ...Function Generator HP Agilent 33250A Timebase Frequency Accuracy Frequency Range up to 10 kHz Frequency Accuracy 5 ppm Voltage Range up to 9 Vpk Digital Multimeter NI 4071 AO Gain AO Offset DC Voltag...

Page 4: ...e device and configure it in Measurement Automation Explorer MAX 2 Verification Verify the existing operation of the device This step confirms whether the device is operating within the published spec...

Page 5: ...re is no 30 seconds wait between setting the coupling on the device and starting the acquisition For flexibility NI DAQmx gives you the ability to download channel configuration settings to hardware a...

Page 6: ...f NI USB 443x devices Refer to the NI USB 443x Specifications for the number of channels and performance specifications AI Offset Verification Note Skip the AC coupled portion of this procedure if bot...

Page 7: ...lication 7 Repeat steps 1 through 6 In step 2 set the coupling parameter to AC Note Skip the AC coupled portion of this procedure if both of the following apply Your device is hardware revision C or e...

Page 8: ...ifying only the channels used in your application AI DC Coupled Gain Accuracy Verification Complete the following steps to verify DC coupled gain accuracy 1 Connect the output of the calibrator to the...

Page 9: ...1 through 5 In step 2 output 9 VDC instead of 9 VDC Subtract the averaged value measured for 0 VDC from the 9 VDC measurement Table 7 AI DC Coupled Gain Accuracy Verification Configuration for NI USB...

Page 10: ...fy the AO offset 1 Connect channel AO 0 on the device to the input of the multimeter 2 Create and configure an AO voltage task on the NI USB 4431 as shown in Table 10 3 Create an array of length 96 00...

Page 11: ...nfigured to generate samples continuously 5 Wait 100 ms This compensates for the filter delay of the analog output channel 6 Measure the DC voltage of the analog output channel using the multimeter in...

Page 12: ...evice 2 Configure the function generator to generate a 10 kHz sine wave with an amplitude of 9 Vpk and no DC offset 3 Create and configure an AI voltage task on the NI USB 443x as shown in Table 14 4...

Page 13: ...t the output of the calibrator to all input channels on the device Use the BNC T connectors to route the signal to all of the inputs 2 Configure the calibrator to output a 1 kHz signal with a 6 3 Vrms...

Page 14: ...for NI USB 443x Configuration Value Minimum value 10 0 Maximum value 10 0 Terminal configuration Pseudodifferential Acquisition mode Continuous Rate 1000 0 Coupling AC Physical channel Dev_name aix D...

Page 15: ...cel if there has been any error during the AI calibration or if you do not want to save the new AI calibration constants in the device EEPROM Use the action commit to save the new AI calibration const...

Page 16: ...tinuously 6 Wait 100 ms This compensates for the filter delay of the analog output channel 7 Measure the DC voltage of channel AO 0 on the device using the multimeter Record this value as actualHighVo...

Page 17: ...device EEPROM The analog output of the device is now calibrated with respect to your external equipment After calibrating the device verify the analog output operation by repeating the Analog Output P...

Page 18: ...rt export data 2011 National Instruments Corporation All rights reserved 373489A 01 Oct11 Where to Go for Support The National Instruments Web site is your complete resource for technical support At n...

Reviews: