National Instruments PXIe-4357 Calibration Procedure Download Page 8

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3.

Zero the calibrator with the ohms-only zero (OHMS ZERO) operation. Refer to the 
calibrator documentation for more information about zeroing the calibrator. This step can 
be skipped if an OHMS ZERO has already been executed on the calibrator as required by 
the calibrator for the specified accuracy.

4.

Set the calibrator output for 4-wire compensation (COMP 4-wire).

5.

Set the calibrator resistance output to 100

Ω

. This is the first calibration point.

6.

Set the calibrator to operate mode (OPR).

7.

Open a calibration session on your module using the DAQmx Initialize External 
Calibration VI. The default password is 

NI

.

8.

Call the DAQmx Adjust 4357 Calibration VI.

9.

Set the calibrator to output a resistance of 350

Ω

. This is the second calibration point.

10. Call the DAQmx Adjust 4357 Calibration VI.

LabVIEW Block Diagram

NI-DAQmx Function Call

Call 

DAQmxInitExtCal

 with the following 

parameters:

deviceName

Dev1

password

NI

calHandle

&calHandle

LabVIEW Block Diagram

NI-DAQmx Function Call

Call 

DAQmxAdjust4357Cal

 with the 

following parameters:

calHandle

calHandle

physicalChannel

Dev1/ai

x

, where 

x

 refers to 

the channel number.

refValues

: [100]

numRefValues

: 1

LabVIEW Block Diagram

NI-DAQmx Function Call

Call 

DAQmxAdjust4357Cal

 with the 

following parameters:

calHandle: 

calHandle

physicalChannel

Dev1/ai

x

, where 

x

 refers to 

the channel number.

refValues

: [350]

numRefValues

: 1

Summary of Contents for PXIe-4357

Page 1: ...cedure 7 Specifications 9 Where to Go for Support 10 Software Requirements Install NI DAQmx 9 5 or later on the calibration computer NI DAQmx includes high level function calls to simplify the task of...

Page 2: ...use the NI DAQmx driver The NI DAQmx C Reference Help includes information about the functions in the driver Calibration Interval National Instruments recommends a calibration interval of one year fo...

Page 3: ...mance of the NI PXIe 4357 The calibration process consists of the following steps 1 Initial Setup Install the module and configure it in Measurement Automation Explorer MAX 2 Verification Verify the e...

Page 4: ...on describing the required module connections Each channel consists of a group of four pins specific to that channel Before connecting or disconnecting the calibrator from the module always set the ca...

Page 5: ...the following connections to the TB 4357 for the channel you want to verify Refer to Figure 2 for visual reference Refer to the Connecting the Calibrator to the Module section for the pin assignments...

Page 6: ...cation 15 Compare the measured result for each value to the Upper Limit and Lower Limit values in Table 4 If the results are all between these values the module passes the test 16 Set the calibrator t...

Page 7: ...etermine the gain and offset adjustment calibration constants Complete the following steps to test the accuracy of the module 1 Set the calibrator to standby mode STBY 2 Make the following connections...

Page 8: ...ration VI The default password is NI 8 Call the DAQmx Adjust 4357 Calibration VI 9 Set the calibrator to output a resistance of 350 This is the second calibration point 10 Call the DAQmx Adjust 4357 C...

Page 9: ...module you must reverify the accuracy of the module To do this repeat the Verification section Specifications The specifications in Table 5 are provided for reference only refer to the NI PXIe 4357 S...

Page 10: ...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 Where to Go for Suppo...

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