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CALIBRATION PROCEDURE

NI PXIe-4339

8 Ch, 24-bit, 25.6 kS/s Universal Bridge Input Module

This document contains the verification and adjustment procedures for the National Instruments
PXIe-4339 module. For more information about calibration solutions, visit

.

Contents

Software.................................................................................................................................... 1
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 3

Connecting the TB-4339/B/C........................................................................................... 3

Test Conditions......................................................................................................................... 5
Initial Setup............................................................................................................................... 5
Verification............................................................................................................................... 5

Voltage Mode Accuracy Verification............................................................................... 6
Ratio Mode Accuracy Verification................................................................................... 7

Adjustment................................................................................................................................ 21

Adjustment Procedure ...................................................................................................... 21

EEPROM Update ..................................................................................................................... 28
Reverification ........................................................................................................................... 29
Specifications............................................................................................................................ 29
Where to Go for Support .......................................................................................................... 29

Software

Calibrating the NI PXIe-4339

requires the installation of NI-DAQmx on the calibration system.

Driver support for calibrating the NI PXIe-4339 was first available in NI-DAQmx 14.5.1. For
the list of devices supported by a specific release, refer to the NI-DAQmx Readme, available on
the version-specific download page or installation media.

You can download NI-DAQmx from

ni.com/downloads

. NI-DAQmx supports LabVIEW,

LabWindows™/CVI™, C/C++, C#, and Visual Basic .NET. When you install NI-DAQmx, you
only need to install support for the application software that you intend to use.

ni.com/manuals

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Содержание PXIe-4339

Страница 1: ...nt Procedure 21 EEPROM Update 28 Reverification 29 Specifications 29 Where to Go for Support 29 Software Calibrating the NI PXIe 4339 requires the installation of NI DAQmx on the calibration system Dr...

Страница 2: ...reference information NI PXIe 4339 Specifications NI PXIe 4339 specifications and calibration interval NI DAQmx Readme Operating system and application software support in NI DAQmx NI DAQmx Help Infor...

Страница 3: ...select a substitute using the requirements listed in Table 1 Table 1 Recommended Equipment Equipment Recommended Model Requirements Calibrator Fluke 5700 If this instrument is unavailable use a calibr...

Страница 4: ...alog Signal Names Signal Name Signal Description AI Positive input voltage terminal AI Negative input voltage terminal CH2 CH3 CH0 CH1 CH5 CH4 CH6 CH7 PFI0 DGND AOGND AIGND T T T T T T T T T T T T T T...

Страница 5: ...ation Guide and Terminal Block Specifications 2 For voltage verification and adjustment connect the calibrator to the TB 4339 B C as shown in Figure 2 If the calibrator has a guard connection leave it...

Страница 6: ...ow to install the software and hardware and how to configure the device in Measurement Automation Explorer MAX Note When a device is configured in MAX it is assigned a device identifier Each function...

Страница 7: ...voltage measurement with the NI PXIe 4339 a Create a DAQmx task b Create and configure the AI channel according to the values shown in Table 3 c Start the task d Average the readings that you acquired...

Страница 8: ...you will acquire a voltage measurement Vmeas for each paired channel at 0 V and 9 V outputs From these results you can determine the ratio verification adjustment factors including the gain adjust Gad...

Страница 9: ...4339 B C as shown in Figure 2 If the calibrator has a guard connection leave it disconnected If the calibrator output is floating you must connect the negative output to AIGND 3 Set the calibrator vo...

Страница 10: ...Ie 4339 a Create a DAQmx task b Create and configure the AI channels according to the values shown in Table 5 c Start the task d Average the readings that you acquired and record the values as chx_9V...

Страница 11: ...ridge V V measurement using the values in Table 6 c Commit the task to turn on and set the excitation voltage using the following parameters Task DAQmx control task task channels in task_out from the...

Страница 12: ...ratiometric reference input value for each ratiometric channel by dividing the calibrator output voltage setting by the paired channels ratio verification adjusted excitation voltage measurement Vm_ex...

Страница 13: ...on V Test Point V V Lower Limit V V Upper Limit V V High Low 0 01 0 01 2 75 0 02475 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 26 9 V V Test Point 1 0 001 26 9 V V 0 Vm_ex_ch calibrator ou...

Страница 14: ...etting V Calibrator Output V Measured Excitation V Test Point V V Lower Limit V V Upper Limit V V High Low 0 02 0 02 2 75 0 0495 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 32 4 V V Test Po...

Страница 15: ...est Point 1 0 001 8 9 V V Test Point 1 0 001 8 9 V V 0 Vm_ex_ch calibrator output Vm_ex_ch 8 9 V V 8 9 V V 0 18 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 8 9 V V Test Point 1 0 001 8 9 V...

Страница 16: ...V Test Point 1 0 001 26 6 V V 0 05 0 05 7 5 0 3375 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 17 7 V V Test Point 1 0 001 17 7 V V 0 Vm_ex_ch calibrator output Vm_ex_ch 17 7 V V 17 7 V V 0...

Страница 17: ...Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 468 8 V V Test Point 1 0 001 468 8 V V 1 1 5 4 5 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 312 2 V V Test Point 1 0 001 312 2 V V 0...

Страница 18: ...calibrator output Vm_ex_ch Test Point 1 0 001 74 V V Test Point 1 0 001 74 V V 0 04 0 04 1 5 0 054 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 49 3 V V Test Point 1 0 001 49 3 V V 0 Vm_ex_...

Страница 19: ...Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 89 0 V V Test Point 1 0 001 89 0 V V 0 08 0 08 1 5 0 108 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 59 3 V V Test Point 1 0 001 59 3...

Страница 20: ...x_ch calibrator output Vm_ex_ch Test Point 1 0 001 133 0 V V Test Point 1 0 001 133 0 V V 0 2 0 2 1 5 0 27 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 88 7 V V Test Point 1 0 001 88 7 V V 0...

Страница 21: ...V V 3 6 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 1561 V V Test Point 1 0 001 1561 V V 4 4 1 5 5 4 Vm_ex_ch calibrator output Vm_ex_ch Test Point 1 0 001 1041 V V Test Point 1 0 001 1041...

Страница 22: ...g you must connect the negative output to AIGND 3 Call the DAQmx Initialize External Calibration function with the following parameters Device In Dev1 Password NI 4 Call the 4339 instance of the DAQmx...

Страница 23: ...nfigured in step 4 9 Repeat steps 4 through 8 for the remaining ranges from Table 16 10 Call the 4339 instance of the DAQmx Adjust SC Express Calibration function with the following parameters calhand...

Страница 24: ...librator output value from step 11 14 Repeat steps 11 through 13 for the remaining calibrator output values from Table 17 15 Repeat steps 10 through 14 for the remaining excitation voltage values from...

Страница 25: ...0 0 18 Table 19 Ratio Mode 0 05 V V Range Range V V Excitation Setting V Calibrator Output V Max Min 0 05 0 05 2 75 0 12375 0 0 12375 0 05 0 05 3 33 0 14985 0 0 14985 0 05 0 05 5 0 225 0 0 225 0 05 0...

Страница 26: ...atio Mode 1 V V Range Range V V Excitation Setting V Calibrator Output V Max Min 1 1 2 75 2 475 0 2 475 1 1 3 33 2 997 0 2 997 1 1 5 4 5 0 4 5 1 1 7 5 6 75 0 6 75 1 1 10 9 0 9 Table 19 Ratio Mode 0 05...

Страница 27: ...ng V Calibrator Output V Max Min 0 04 0 04 0 625 0 0225 0 0 0225 0 04 0 04 1 0 036 0 0 036 0 04 0 04 1 5 0 054 0 0 054 0 04 0 04 2 0 072 0 0 072 0 04 0 04 2 5 0 09 0 0 09 Table 22 Ratio Mode 0 08 V V...

Страница 28: ...5 0 18 0 0 18 Table 23 Ratio Mode 0 2 V V Range Range V V Excitation Setting V Calibrator Output V Max Min 0 2 0 2 0 625 0 1125 0 0 1125 0 2 0 2 1 0 18 0 0 18 0 2 0 2 1 5 0 27 0 0 27 0 2 0 2 2 0 36 0...

Страница 29: ...calhandle output from DAQmx Initialize External Calibration action commit 0 2 0 2 2 5 0 45 0 0 45 Table 24 Ratio Mode 4 V V Range Range V V Excitation Setting V Calibrator Output V Max Min 4 4 0 625...

Страница 30: ...calibration temperature without making any adjustments by initializing an external calibration and closing the external calibration Reverification Repeat the Verification section to determine the As...

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