background image

© 2013–2015 National Instruments. All rights reserved. 

374149C-01

Nov15

Refer to the 

NI Trademarks and Logo Guidelines 

at 

ni.com/trademarks

 for more information on 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 Patents Notice

 at 

ni.com/patents

. You can find information about end-user license agreements (EULAs) and third-party 

legal notices in the readme file for your NI product. 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. NI MAKES 
NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR 
ANY ERRORS. U.S. Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable 
limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.

Note

The test limits listed in Table 4 are derived using the values in Table 13.

Note

For operational specifications, refer to the most recent 

NI 9227 Operating 

Instructions and Specifications

 online at 

ni.com/manuals

.

Worldwide Support and Services

The National Instruments website 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.

Visit 

ni.com/services

 for NI Factory Installation Services, repairs, extended warranty, and 

other services.

Visit 

ni.com/register

 to register your National Instruments product. Product registration 

facilitates technical support and ensures that you receive important information updates from NI. 

National Instruments corporate headquarters is located at 11500 North Mopac Expressway, 
Austin, Texas, 78759-3504. National Instruments also has offices located around the world. For 
telephone support in the United States, create your service request at 

ni.com/support

 or dial 

1 866 ASK MYNI (275 6964). For telephone support outside the United States, visit the 
Worldwide Offices section of 

ni.com/niglobal

 to access the branch office websites, which 

provide up-to-date contact information, support phone numbers, email addresses, and current 
events.

Table 13.  

NI 9227 Accuracy Under Calibration Conditions

Percent of Reading (Gain Error)

Percent of Range* (Offset Error)

0.1% max

0.06% max

*

 Range equals 5 A

rms

 (7.07 APK)

Summary of Contents for NI 9227

Page 1: ...Matching Verification 6 Phase Matching Verification 8 Adjustment 9 Accuracy Adjustment 9 EEPROM Update 10 Reverification 10 Accuracy Under Calibration Conditions 10 Worldwide Support and Services 11 S...

Page 2: ...ctions and Specifications NI 9227 specific information specifications and calibration interval NI DAQmx Readme Operating system and application software support in NI DAQmx LabVIEW Help LabVIEW progra...

Page 3: ...device Use twisted pairs wire to eliminate noise and thermal offsets Maintain an ambient temperature of 23 C 5 C The device temperature will be greater than the ambient temperature Keep relative humid...

Page 4: ...em safety ground 4 Install the module in slot 8 of the NI cDAQ 9178 chassis Leave slots 1 through 7 of the NI cDAQ 9178 chassis empty 5 Connect the NI cDAQ 9178 chassis to your host computer 6 Connect...

Page 5: ...Figure 1 Accuracy Verification Connections 3 Set the calibrator current to a Test Point value indicated in Table 4 4 Set the calibrator to Operate mode OPR 5 Acquire and average samples a Create and c...

Page 6: ...are derived using the values in Table 13 Gain Matching Verification Complete the following procedure to determine the As Found status of the NI 9227 1 Connect the NI 9227 to the function generator as...

Page 7: ...hannel to channel gain difference to the maximum limit of 0 13 dB 7 Disable the function generator 8 Disconnect the calibrator from the device If the Gain Matching verification procedure determines th...

Page 8: ...he function generator 5 Acquire samples a Create and configure an AI current task according to Table 9 b Configure the task timing according to Table 10 c Start the task Table 8 Function Generator Con...

Page 9: ...peration required to adjust the NI 9227 Accuracy Adjustment Complete the following procedure to adjust the accuracy performance of the NI 9227 Note Completing the Accuracy adjustment procedure adjusts...

Page 10: ...g an external calibration setting the C Series calibration temperature and closing the external calibration Reverification Repeat the Verification section to determine the As Left status of the device...

Page 11: ...d in Table 4 are derived using the values in Table 13 Note For operational specifications refer to the most recent NI 9227 Operating Instructions and Specifications online at ni com manuals Worldwide...

Reviews: