NI PXIe-4137 Calibration Procedure
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NI PXIe-4137 Calibration Procedure

Pxie, ±200 v, ±1 a (dc)/±3 a (pulsed), 100 fa precision system pxi source measure unit
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CALIBRATION PROCEDURE
PXIe-4137
PXIe, ±200 V, ±1 A (DC)/±3 A (Pulsed), 100 fA Precision System PXI
Source Measure Unit
This document contains the verification and adjustment procedures for the PXIe-4137. Refer
to
ni.com/calibration
Note
In this document, the PXIe-4137 (40W) and PXIe-4137 (20W) are referred to
inclusively as the PXIe-4137. The information in this document applies to all
versions of the PXIe-4137 unless otherwise specified. To determine which version of
the module you have, locate the device name in one of the following places:
•
In MAX-The PXIe-4137 (40W) shows NI PXIe-4137 (40W), and the
PXIe-4137 (20W) shows as NI PXIe-4137.
•
Device front panel-The PXIe-4137 (40W) shows PXIe-4137 40W System
SMU, and the PXIe-4137 (20W) shows NI PXIe-4137 Precision System SMU
on the front panel.
Please review and become familiar with the entire procedure before beginning the calibration
process.
Contents
Required Software.....................................................................................................................2
Related Documentation.............................................................................................................2
Password................................................................................................................................... 3
Calibration Interval................................................................................................................... 3
Test Equipment..........................................................................................................................3
Test Conditions..........................................................................................................................5
Safety Guidelines for System Operation...................................................................................6
As-Found and As-Left Limits................................................................................................... 7
Calibration Overview................................................................................................................ 7
Verification................................................................................................................................8
Self-Calibrating the PXIe-4137........................................................................................ 9
Testing the Safety Interlock.............................................................................................. 9
Verifying Voltage Measurement and Output...................................................................10
Verifying Remote Sense Voltage Offset..........................................................................12
Verifying Voltage Remote Sense.....................................................................................12
Verifying Current Offset................................................................................................. 14
Verifying Load Regulation..............................................................................................15
Verifying 1 μA and 10 μA Current Measurement and Output........................................17
for more information about calibration solutions.

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Summary of Contents for NI PXIe-4137

  • Page 1: Table Of Contents

    CALIBRATION PROCEDURE PXIe-4137 PXIe, ±200 V, ±1 A (DC)/±3 A (Pulsed), 100 fA Precision System PXI Source Measure Unit This document contains the verification and adjustment procedures for the PXIe-4137. Refer ni.com/calibration for more information about calibration solutions. Note In this document, the PXIe-4137 (40W) and PXIe-4137 (20W) are referred to inclusively as the PXIe-4137.

  • Page 2: Required Software

    Reverification..........................28 Setting the Calibration Due Date.................... 28 Revision History........................29 NI Services..........................29 Required Software Calibrating the PXIe-4137 requires you to install the following software on the calibration system: • Supported driver software – For PXIe-4137 (40W), install NI-DCPower 20.5 or later –...

  • Page 3: Password

    Recommended calibration interval 1 year Test Equipment The following table lists the equipment NI recommends for the performance verification and adjustment procedures. If the recommended equipment is not available, select a substitute that meets the minimum required specifications listed in the table.
  • Page 4 Belden 83319E 1 μA and 10 μA — Conductor Current accuracy, 22 AWG, Silver 100 µA to 100 mA Plated Copper Current Output and Cables Measurement, 3 A and 1 A current accuracy 4 | ni.com | PXIe-4137 Calibration Procedure...

  • Page 5: Test Conditions

    Single Banana Current accuracy Plug Adapter Test Conditions Follow the setup and environmental information below to ensure the PXIe-4137 meets the published specifications. • Ensure that the safety interlock terminal is open during verification procedures unless specifically required. Ensure proper operator safety procedures when using the PXIe-4137 with the interlock closed.

  • Page 6: Safety Guidelines For System Operation

    à ± 40 V CC, et la is the internal device temperature recorded by the PXIe-4137 at the completion of the last self- calibration. Call the niDCPower Get Self Cal Last Temp VI to query T from the PXIe-4137.

  • Page 7: As-Found And As-Left Limits

    The as-left limits are equal to the published NI specifications for the device, less guard bands for measurement uncertainty, temperature drift, and drift over time. NI uses these limits to determine whether the device will meet the device specifications over its calibration interval.

  • Page 8: Verification

    Adjustment Procedure Verification or Return Device Complete Initial setup—Install the PXIe-4137 and configure it in Measurement & Automation Explorer (MAX). Verification—Verify the existing operation of the PXIe-4137. This step confirms whether the device is operating within the published specifications prior to adjustment.

  • Page 9: Self-Calibrating The Pxie-4137

    Complete the following steps to self-calibrate the PXIe-4137. Disconnect or disable all connections to the PXIe-4137. Allow the PXIe-4137 30 minutes to warm up with the PXI chassis fans set to HIGH. Initialize an NI-DCPower session. Call the self-calibration function.

  • Page 10: Verifying Voltage Measurement And Output

    – Output LO Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Voltage for the PXIe-4137. Verifying Voltage Measurement and Output Compare a set of voltages measured by a DMM to the voltage test points requested by the PXIe-4137.
  • Page 11 Voltage Measurement Test Limits = Test Point ± (|Test Point| * % of Voltage + Offset) Set the first specified level range, limit range, and limit on the PXIe-4137. Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Local.

  • Page 12: Verifying Remote Sense Voltage Offset

    Repeat step 1 through step 5 for each level range. Verifying Voltage Remote Sense Use the PXIe-4137 in constant current mode with a test circuit to simulate the voltage drop between the device and a load. Complete this procedure only after successfully completing all previous verification procedures.
  • Page 13 After the internal temperature has stabilized, if the temperature still exceeds ± 1 °C, call the self-calibration VI or function. Set the level on the PXIe-4137 to the first specified test point and enable the output. Take a voltage measurement using the PXIe-4137.

  • Page 14: Verifying Current Offset

    Output LO Verifying Current Offset Remove all connections from the PXIe-4137 and confirm the current measured by the PXIe-4137 at 0 V falls within the test limits. Refer to the following table as you complete the following steps. Complete this procedure only after successfully completing all previous verifcation procedures.

  • Page 15: Verifying Load Regulation

    ±85 µA Disconnect all equipment from the output of the PXIe-4137. Set the specified level range, limit range, and limit on the PXIe-4137. Measure the internal device temperature and perform self-calibration if necessary. After measuring the internal device temperature, wait for the internal device temperature to stabilize.
  • Page 16 Connection wires should be 18 or 20 AWG and as short as possible to ensure low resistance. Set the first specified level range, limit range, and limit on the PXIe-4137. Measure the internal device temperature and perform self-calibration if necessary.

  • Page 17: Verifying 1 Μa And 10 Μa Current Measurement And Output

    Verifying 1 μA and 10 μA Current Measurement and Output Compare a set of measured currents reported by the PXIe-4137 to the currents measured by a DMM. Refer to the following table as you complete the following steps. Complete this procedure only after successfully completing all previous verification procedures.
  • Page 18 Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Voltage for the PXIe-4137. Set the first specified level range, limit range, and limit on the PXIe-4137. Measure the internal device temperature and perform self-calibration if necessary. After measuring the internal device temperature, wait for the internal device temperature to stabilize.

  • Page 19: Verifying 100 Μa To 100 Ma Current Measurement And Output

    Take a current measurement using the PXIe-4137. 10. Record the value from the previous step. 11. Verify that the recorded PXIe-4137 value falls within the test limits. 12. Repeat step 5 through step 11 for each test point. 13. Repeat step 3 through step 12 for each level range.
  • Page 20 The lower and upper voltage measurement test limits are calculated using the following formula: Current Measurement Test Limits = Test Point ± (|Test Point| * % of Current + Offset) Make the necessary connections for this procedure, as shown in the following figure: 20 | ni.com | PXIe-4137 Calibration Procedure...

  • Page 21: Verifying 1 A And 3 A Current Measurement And Output

    Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4137. Set the first specified level range, limit range, and limit on the PXIe-4137. Measure the internal device temperature and perform self-calibration if necessary. After measuring the internal device temperature, wait for the internal device temperature to stabilize.
  • Page 22 Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4137. Set the first specified level range, limit range, and limit on the PXIe-4137. Measure the internal device temperature and perform self-calibration if necessary. After measuring the internal device temperature, wait for the internal device temperature to stabilize.

  • Page 23: Adjustment

    Repeat step 3 through step 8 for each level range. 10. Configure the PXIe-4137 output to disable. Adjustment This section describes the steps needed to adjust the PXIe-4137 to meet published specifications. Adjusted Specifications Adjustment corrects the following specifications for the device: •...

  • Page 24: Voltage And Current Output

    Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Remote. Adjusting Voltage Output and Measurement Compare a set of measured voltages reported by the PXIe-4137 to the voltages measured by an external DMM. Refer to the following table as you complete the following steps: Table 10.
  • Page 25 Adjusting the 100 µA and 1 mA level ranges automatically adjusts the following ranges: 1 μA, 10 µA, 10 mA, and 100 mA. The PXIe-4137 requires that you use ±100 µA test points in the 1 mA level range. PXIe-4137 Calibration Procedure | © National Instruments Corporation | 25...
  • Page 26 Repeat step 3 through step 8 for each level range. Adjusting 1 A and 3 A Current Output and Measurement Compare a set of measured currents reported by the PXIe-4137 to the currents measured by an external DMM. Complete this procedure only after successfully completing all previous adjustment procedures.

  • Page 27: Residual Offset Voltage

    Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4137. Set the first specified level range, limit range, and limit on the PXIe-4137. Set the level on the PXIe-4137 to the first specified test point.

  • Page 28: Closing The Adjustment Session

    Use either Measurement & Automation Explorer (MAX) or NI System Configuration API to set or clear a calibration due date for your device. NI suggests a minimum calibration due date of the date of external calibration plus the external calibration interval for the device.

  • Page 29: Revision History

    Alternatively, use the Update Calibration VI in the NI System Configuration API to set the calibration due date for either a specific date or an interval in months. Revision History Table 13. Revision History Revision Section Changes Verbiage to include the PXIe-4137 (40W) Various variant into the calibration procedure.
  • Page 30 . You can find patents.txt ni.com/patents 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 for the NI global trade compliance policy and how ni.com/legal/export-compliance...

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