National Instruments PXIe-4467 Calibration Procedure
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National Instruments PXIe-4467 Calibration Procedure

National Instruments PXIe-4467 Calibration Procedure

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PXIe-4466/4467
Calibration Procedure
February 2022

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Summary of Contents for National Instruments PXIe-4467

  • Page 1 PXIe-4466/4467 Calibration Procedure February 2022...

  • Page 2: Table Of Contents

    PXIe-4466/4467 Calibration Procedure This document contains the verification and adjustment procedures for the PXIe-4466 and PXIe-4467. Use the procedures in this document to automate calibration or to conduct manual calibration. Review and become familiar with the entire procedure before beginning the calibration process.

  • Page 3: Terms And Definitions

    Some measurement DUTs have warranted specifications for different calibration intervals, for example: 24 hours, 90 days, 1 year, and 2 years. In this case, the specification depends on the calibration cycle chosen by the user. Calibration Overview Recommended Calibration Interval © National Instruments Corporation...
  • Page 4 PXIe-4466/4467 Calibration Procedure 2 years Password Note This is the default password for all password-protected operations. This password is site-specific. Operator Task Estimated Test Time Test Points Connections Setup 10 minutes — — Warm Up 15 minutes — — Verify, Adjust, and 19 minutes Reverify Verify Only...

  • Page 5: Calibration Condition Guidelines

    Control Task VI and wait 5 seconds for the input to settle. Subsequent gain verification points, which do not change the coupling, do not require a delay. Calibration Resources Required Software Note Ensure that the most recent version of the required driver software is installed before conducting the calibration. © National Instruments Corporation...

  • Page 6: Recommended Documentation

    Install the following software on the calibration system: DAQmx Recommended Documentation Go to ni.com/manuals to locate the following documentation for more information when performing this calibration: PXIe-4466 Getting Started Guide or PXIe-4467 Getting Started Guide PXIe-4466 Specifications or PXIe-4467 Specifications NI-DAQmx Readme NI-DAQmx Help LabVIEW Help NI-DAQmx C Reference Help NI-DAQmx .NET Help Support for Visual Studio...
  • Page 7 BNC (M) to BNC (M) Pomona Electronics All Tests (BNC Variant) Length: ≤ 0.5m Cable (quantity 1) 5697 BNC (F) to Banana Pomona Electronics AI Gain Adapter (quantity 1) 1269 AI Flatness AO Offset AO Gain © National Instruments Corporation...

  • Page 8: Warm Up The Dut

    PXIe-4466/4467 Calibration Procedure AO Flatness AO Offset and Gain Adjustment Banana to Banana Cable Pomona Electronics AO Differential Gain Length: ≤ 0.5m (quantity 1) B-4-2 and Offset Banana to Alligator Clip Pomona Electronics AO Differential Gain Length: ≤ 0.5m Cable (quantity 2) 1166-12-0 (Black) and Offset 1166-12-2 (Red)

  • Page 9: Perform Verification

    PXIe-4466/4467 Calibration Procedure Launch MAX. Select My System»Devices and Interfaces»NI PXIe-4466 or My System»Devices and Interfaces»NI PXIe-4467. Start self-calibration using one of the following methods: Click Self-Calibrate in the upper right corner of MAX. Right-click the name of the DUT in the MAX configuration tree and select Self-Calibrate from the drop-down menu.
  • Page 10 PXIe-4466/4467 Calibration Procedure Initial Test Connection Figure 1. Initial Connection for AI Offset 1. Calibrator 3. BNC – mXLR Cable 2. Banana – BNC Adapter 4. PXIe-4466/4467 with mXLR Verification Procedure Complete the following procedure to verify the AI offset accuracy. Repeat 2 times, once for each channel.
  • Page 11 Table 3: Gain Range and Corresponding Max and Min Voltages Desired Gain Range (dB) Max Voltage (V) Min Voltage (V) 42.4 -42.4 31.6 -31.6 10.0 -10.0 3.16 -3.16 1.00 -1.00 0.316 -0.316 © National Instruments Corporation...
  • Page 12 PXIe-4466/4467 Calibration Procedure Start the task. Acquire readings with the DUT. On a per channel basis, average all of the acquired samples. Stop and clear the task. Compare the averaged values to the appropriate limits in Table 1. The average is the offset at the tested gain setting. ni.com/services...

  • Page 13: Ai Gain Accuracy Verification

    Initial Test Connection Note Initial test connection is same as AI Offset, as shown in Figure 1. Verification Procedure Complete the following procedure to verify the AI gain accuracy. Repeat 2 times, once for each channel. © National Instruments Corporation...
  • Page 14 PXIe-4466/4467 Calibration Procedure Connect the AI channel under test to the Calibrator as shown in Figure 1. Repeat 6 times, once for each gain setting. Configure the calibrator to generate an output with the amplitude and frequency from Table 4. Create and configure an AI Voltage channel task using the values in Table 5 .

  • Page 15: Ai Gain Flatness Verification

    0.89125 * V 1.12202 * V 1kHz 1kHz 1kHz 0.99931 * V 1.00069 * V 1kHz 1kHz 0, 10, 20 and 30 0.99713 * V 1.00288 * V 1kHz 1kHz 0.99083 * V 1.00925 * V 1kHz 1kHz © National Instruments Corporation...
  • Page 16 PXIe-4466/4467 Calibration Procedure Initial Test Connection Note Initial test connection is same as AI Offset, as shown in Figure 1. Verification Procedure Complete the following procedure to verify the AI flatness accuracy. Repeat 2 times, once for each channel. Connect the AI channel under test to the Calibrator as shown in Figure Repeat 6 times, once for each gain setting.
  • Page 17 As an example, use the Extract Single Tone Information VI to help calculate the RMS. Note that the output of this VI is peak amplitude, and it must be divided by √2 to convert to RMS. Stop and clear the task. © National Instruments Corporation...

  • Page 18: Iepe Current Verification

    PXIe-4466/4467 Calibration Procedure IEPE Current Verification Test Limits Table 9: IEPE Current Limits IEPE Current Setting (mA) As-Found Test Limit Lower Limit (mA) Upper Limit (mA) 3.858 4.205 9.655 10.523 19.247 20.976 Initial Test Connection Figure 2. Initial Connection for IEPE Current 1.
  • Page 19 Finite number of samples Rate 250000 Samples Per Channel 125000 *Refer to Table 3 for the maximum and minimum voltages to specify to ensure the specified gain range is used on the module. Start the task. © National Instruments Corporation...

  • Page 20: Ao Differential Offset Accuracy Verification

    PXIe-4466/4467 Calibration Procedure Acquire readings with the DUT. The readings are not used; the task is run to set the device configuration. Measure the output current on the DMM. Stop and clear the task. Compare this value to the limits in Table 9. Note After the last IEPE current verification step, turn off the current by performing step 3 through 7 with the excitation parameter set to 0.
  • Page 21 Connect the AO channel under test to the DMM as shown in Figure 3. Configure the DMM using the information in Table 12. Table 12: DMM Configuration Configuration Value Function DC Volts (DCV) Range Fixed - 100 mV © National Instruments Corporation...
  • Page 22 PXIe-4466/4467 Calibration Procedure Number of Power Line Cycles (NPLC) MATH NULL Enabled Repeat 2 times, once for each output terminal configuration. Repeat 4 times, once for each AO Attenuation. Configure an AO Voltage channel task using the values in Table 13. Table 13: AO Setup Configuration Value...

  • Page 23: Ao Differential Gain Accuracy Verification

    0.20009 6.27828 6.32180 6.28623 6.31380 1.99310 2.00692 1.99563 2.00438 Pseudodifferential 0.62783 0.63218 0.62862 0.63138 0.19931 0.20069 0.19956 0.20044 Initial Test Connection Note Initial test connection is same as AO Differential Offset, as shown in Figure 3. © National Instruments Corporation...
  • Page 24 PXIe-4466/4467 Calibration Procedure Verification Procedure Complete the following procedure to verify the AO differential gain accuracy. Repeat 2 times, once for each channel. Connect the AO channel under test to the DMM as shown in Figure 3. Repeat 2 times, once for each output terminal configuration. Repeat 4 times, once for each AO Attenuation.
  • Page 25 Sine Wave Frequency 1000 Hz Amplitude* Amplitude from Table 17 Sampling Info>>Sampling Rate 250000 S/s Sampling Info>>Number of Samples 25000 *Refer to Table 17 for details about the correlation between AO Gain, DMM Range, and Signal Amplitude. © National Instruments Corporation...
  • Page 26 PXIe-4466/4467 Calibration Procedure Write the resulting waveform to AO and start the task. Measure the output voltage with the DMM. Stop the task. Compare the result with the limits in Table 15. Note Before proceeding to the next channel, call DAQmx Channel Property Node, and set the AO Idle Output Behavior property (Analog Output>>General Properties>>Output Configuration>>Idle Output Behavior) to Zero Volts.

  • Page 27: Ao Gain Flatness Verification

    0.988553 * V 1.011579 * V 1kHz 1kHz 0, 10, 20, and 30 1 kHz 1kHz Pseudodifferential 20 kHz 0.999079 * V 1.000921 * V 1kHz 1kHz 100 kHz 0.988553 * V 1.011579 * V 1kHz 1kHz © National Instruments Corporation...
  • Page 28 PXIe-4466/4467 Calibration Procedure Initial Test Connection Note Initial test connection is same as AO Differential Offset, as shown in Figure 3. Verification Procedure Complete the following procedure to verify the AO gain flatness. ni.com/services...
  • Page 29 *Refer to Table 17 for details about the correlation between AO Gain, DMM Range, and Signal Amplitude. Call DAQmx Channel Property Node, and set the AO Idle Output Behavior property (Analog Output>>General Properties>>Output Configuration>>Idle Output Behavior) to Zero Volts Call Basic Function Generator Parameters using the parameters in Table 22. © National Instruments Corporation...
  • Page 30 PXIe-4466/4467 Calibration Procedure Table 22: Basic Function Generator Parameters Parameter Value Signal Type Sine Wave Frequency 1000 Hz Amplitude* Amplitude from Table 17 Sampling Info>>Sampling Rate 250000 S/s Sampling Info>>Number of Samples 12500 *Refer to Table 17 for details about the correlation between AO Gain, DMM Range, and Signal Amplitude.

  • Page 31: Ao Common-Mode Gain And Offset Verification

    As-Found Test Limit Test Point (V) Lower Limit Upper Limit Lower Limit Upper Limit -0.00600 0.00600 -0.00152 0.00152 0.99325 1.00675 0.99790 1.00210 1.99250 2.00750 1.99732 2.00268 2.99175 3.00825 2.99674 3.00326 3.99100 4.00900 3.99616 4.00384 4.99025 5.00975 4.99558 5.00442 © National Instruments Corporation...
  • Page 32 PXIe-4466/4467 Calibration Procedure Initial Test Connection Figure 4. Initial Connection for AO Common-Mode Gain and Offset 1. DMM 4. BNC – mXLR Cable 2. Banana – BNC Adapter 5. PXIe-4466/4467 with mXLR 3 Shorting Cable (Banana – Banana) Verification Procedure Complete the following procedure to verify common-mode gain and offset.
  • Page 33 Create an array of 25000 points and fill every element with value 0. Write the array to AO. Start the task. Measure the output voltage on the DMM. Stop and clear the task. Compare this value to the limits in Table 23. © National Instruments Corporation...

  • Page 34: Timebase Frequency Accuracy Verification

    PXIe-4466/4467 Calibration Procedure Timebase Frequency Accuracy Verification Test Limits Table 26: Timebase Frequency Accuracy Limits Function Generator As-Found Test Limit As-Left Test Limit Output Anplitude Frequency Lower Limit Upper Limit Lower Upper Limit (kHz) (kHz) (kHz) Limit (kHz) (kHz) 10.000 9.99973 10.00027 9.99992...
  • Page 35 Configure the function generator to output a sine wave of 6.3 V (8.9 V signal, no offset, at a frequency of 10.000 kHz. Create and configure an AI voltage task on the DUT as shown in Table 27. © National Instruments Corporation...
  • Page 36 PXIe-4466/4467 Calibration Procedure Table 27: Timebase Frequency Verification Configuration Configuration Value Physical Channels Dev_name/aix Gain 0 (dB) Max/Min Voltage +/-10V Coupling Terminal Configuration Pseudodifferential Excitation (IEPE) 0 (A) Acquisition mode Finite number of samples Rate 40000.0 Samples per channel 2560000 Start the task.

  • Page 37: Perform Adjustment

    Dev_name o password: NI o calHandle: &myCalHandle Connect the calibrator to AI0 as shown in Figure 1. Configure the calibrator to generate an output with the amplitude of 6.3 Vrms and frequency of 1kHz. © National Instruments Corporation...

  • Page 38: Timebase Adjustment

    PXIe-4466/4467 Calibration Procedure Call DAQmxAdjust4466Cal (DAQmx Adjust 4466 Calibration VI from the DAQmx Adjust DSA AI Calibration Polymorphic AI), using the following parameters: calHandle: myCalHandle referenceVoltage: 6.3 Timebase Adjustment Perform an adjustment at least once within the calibration interval. Adjustment automatically updates the calibration constants, the date, and the temperature in the DUT EEPROM.

  • Page 39: Perform Reverification

    The calibration date can be updated without performing the adjustment procedure. This might be appropriate if the DUT successfully passed each of the verification procedures within the As Left test limits without adjustment. Complete the following steps to update the calibration date: © National Instruments Corporation...

  • Page 40: Revision History

    PXIe-4466/4467 Calibration Procedure Open a calibration session using the DAQmx Initialize External Calibration VI with the following parameters: deviceName: Dev_name password: NI calHandle: &myCalHandle Close the session with the DAQmx Close External Calibration VI with the following parameters: calHandle: myCalHandle action: DAQmx_Val_Action_Commit Revision History Revision...

  • Page 41: Ni Services

    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.

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