NATIONAL INSTRUMENTS PXIe-4162 PXI Source Measure Unit User Manual

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CALIBRATION PROCEDURE

PXIe-4162/4163

12 or 24-Channel, ±24 V Precision PXI Source Measure Unit

This document contains the verification and adjustment procedures for the PXIe-4162/4163. Refer to ni.com/calibration for more information about calibration solutions.

Required Software

Calibrating the PXIe-4162/4163 requires you to install the following software on the calibration system:

• NI-DCPower 17.6 or later
• Supported application development environment (ADE)—LabVIEW or LabWindows™/CVI™
• Supported operating system—Windows

When you install NI-DCPower, you need to install support only for the application software that you intend to use. Access calibration support in the locations shown in the following table:

ADE

|

Calibration Support Location

---|---
LabVIEW| NI-DCPower Calibration palette
LabWindows/CVI| NI-DCPower function panel (niDCPower.fp)

You can download all required software from ni.com/downloads.

Related Documentation

For additional information, refer to the following documents as you perform the calibration procedure:

• PXIe-4162 Getting Started Guide
• PXIe-4163 Getting Started Guide
• NI DC Power Supplies and SMUs Help
• PXIe-4162 Specifications
• PXIe-4163 Specifications
• NI-DCPower Readme
• LabVIEW Help

Visit ni.com/manuals for the latest versions of these documents.

Password

The default password for password-protected operations is NI.

Calibration Interval

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 using the minimum requirements specifications listed in the table.

Table 1. Required Equipment for Calibration

Required Equipment

| Recommended Model(s)| Parameter Measured|

Minimum Requirements

---|---|---|---
Digital multimeter (DMM)| PXIe-4081| All parameters except load regulation verification and remote sense accuracy| Voltage accuracy:
±(50 ppm + 500 µV)Voltage resolution: 100 µVCurrent accuracy:

• 100 µA to 10 mA range:
  ±(200 ppm + 40 ppm of range)

• 100 mA range:
  ±(200 ppm + 20 ppm of range)

Current resolution: 1 ppm of range

1 MΩ current shunt| IET Labs SRL-1M| 10 μA current accuracy| Accuracy: ±150 ppm

Tempco: 10 ppm/°C

3 kΩ resistor| Vishay PTF563K0000BYEB| Remote sense accuracy| ±0.1%, 250 mW
Output shorting assembly| NI part number 147968A-01L| Residual voltage offset adjustment|

—

Double banana plugs| NI part number 762533-01 or Pomona 4892| All parameters except load regulation verification and remote sense accuracy|

—

Screw terminal breakout board¹| NI part number 147971A-02L
or
NI part number 147971A-01L| Load regulation verification|

—

62-pin D-Sub male to bare wire male cable| SHDB62M-BW-LL

• 1 m (NI part number 142948A-01) 
• 2 m (NI part number 142948A-02)

| All parameters| 28 AWG
Low-leakage, low-thermal cable (shielded twisted pair cable with banana plugs) | NI part number 779499-01| 10 μA current accuracy| 22 AWG

Test Conditions

Follow the setup and environmental information below to ensure the PXIe-4162/4163 meets the published specifications. Test limits in this document are based on the January 2018 edition of the PXIe-4162 Specifications and PXIe-4163 Specifications.

• Keep cabling as short as possible. Long cables act as antennas, picking up extra noise that can affect measurements.
• Verify that all connections to the PXIe-4162/4163, including front panel connections and screws, are secure.
• Ensure that the PXI chassis fan speed is set to HIGH, that the fan filters, if present, are clean, and that the empty slots contain filler panels. For more information about cooling, refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.

————————
¹ If you use the breakout board for the PXIe-4162 with a PXIe-4163 or the breakout board for the PXIe-4163 with a PXIe-4162, refer to the Getting Started Guide for your SMU for pinout information when connecting the breakout board.

• Allow a warm-up time of at least 30 minutes after the chassis is powered on and NI-DCPower is loaded and recognizes the PXIe-4162/4163. The warm-up time ensures that the PXIe-4162/4163 and test instrumentation are at a stable operating temperature.

• Use shielded copper wire for all cable connections to the module. Use twisted-pair wire to eliminate noise and thermal offsets.

• To ensure the system has had adequate time to settle, wait one second after requesting a new current or voltage or after changing a load before taking a measurement.

• When making measurements, configure the following aperture time-related settings:
  – Set the niDCPower Aperture Time property or
  NIDCPOWER_ATTR_APERTURE_TIME attribute to 2 power-line cycles (PLCs) on the module.
  – Set the niDCPower Aperture Time Units property or
  NIDCPOWER_ATTR_APERTURE_TIME_UNITS to power line cycles.
  – Set the niDCPower Configure Power Line Frequency property or the NIDCPOWER_ATTR_POWER_LINE_FREQUENCY attribute to either 50 or 60 depending on the frequency of the AC power line in your location.

• Do not use the NI-DCPower Soft Front Panel (SFP) to request test points for any adjustment functions because you cannot set aperture time using the SFP.

• Ensure that properties or attributes for the module that are not specified in calibration procedures are set to their default values.

• When making measurements, configure any specified digital multimeters (DMMs) with the best available ranges and measurement settings for each specified test point.

• Keep relative humidity between 10% and 70%, noncondensing.

• For verification procedures, maintain an ambient temperature of 23 °C ± 5 °C. Maintain an internal device temperature range of Tcal ± 1 °C.²

• For adjustment procedures, maintain an ambient temperature of 23 °C ± 1 °C. The PXIe-4162/4163 internal temperature is greater than the ambient temperature.

As-Found and As-Left Limits

The as-found limits are the published specifications for the device. NI uses these limits to determine whether the device meets the device specifications when it is received for calibration.

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.

————————
² Tcal is the internal device temperature recorded by the PXIe-4162/4163 at the completion of the last self-calibration. Call the niDCPower Get Self Cal Last Temp VI to query Tcal from the PXIe-4162/4163.

Calibration Overview

Calibration includes the steps shown in the following figure.

Figure 1. Calibration Overview

1. Initial setup—Install the PXIe-4162/4163 and configure it in Measurement & Automation Explorer (MAX).

2. Verification—Verify the existing operation of the PXIe-4162/4163.
   This step confirms whether the PXIe-4162/4163 is operating within the published specifications prior to adjustment.

3. Adjustment—Adjust the calibration constants of the PXIe-4162/4163.

4. Reverification—Repeat the Verification procedure to ensure that the PXIe-4162/4163 is operating within the published specifications after adjustment.

Verification

The performance verification procedures assume that adequate traceable uncertainties are available for the calibration references.

You must repeat verification procedures for each channel on the PXIe-4162/4163.

You do not need to separately verify both measurement and output. The architecture of the PXIe-4162/4163 ensures that if measurement is accurate, then output is as well, and vice versa.

Self-Calibrating the PXIe-4162/4163

Complete the following steps to self-calibrate the PXIe-4162/4163.

1. Disconnect or disable all connections to the PXIe-4162/4163.
2. Allow the PXIe-4162/4163 30 minutes to warm up with the PXI chassis fans set to HIGH.
3. Initialize an NI-DCPower session containing all device channels.
4. Call the self-calibration function.
5. Close the NI-DCPower session.

Verifying Voltage Measurement and Output

Compare a set of voltages measured by a DMM to the voltage test points requested by the PXIe-4162/4163.

Refer to the following table as you complete the following steps.

Table 2. PXIe-4162/4163 Voltage Measurement and Output Verification

Level Range

| Limit Range and Limit| Test Point| As-Found Measurement Test Limit ±(% of Voltage + Offset)| As-Left Measurement Test Limit ±(% of Voltage + Offset)
---|---|---|---|---
24 V| 1 mA| -24V| 0.05% + 5 mV|

0.02% + 2.4 mV

0 mV

24 V

1. Measure the internal device temperature and perform self-calibration if necessary.

a) After measuring the internal device temperature, wait for the internal device temperature to stabilize. Temperature is considered stable when it has not changed by more than ±1 °C in the previous 5 minutes.
b) After the internal temperature has stabilized, if the temperature still exceeds Tcal ± 1 °C, call the self-calibration VI or function.

2. Make the necessary connections for this procedure, as shown in the following figure:

Figure 2. Voltage Verification Connection Diagram

NI-DCPower Device

3. Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Voltage for the PXIe-4162/4163.
4. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
5. Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Local.
6. Configure the PXIe-4162/4163 to output the first specified test point.
7. Compare a DMM voltage measurement to the voltage measurement test limits.

a) Take a voltage measurement using the DMM.
b) Calculate the lower and upper voltage measurement test limits using the following formula:
Voltage Measurement Test Limits = Test Point ± (| Test Point | * % of Voltage + Offset )
c) Verify the DMM measurement falls within the test limits.

8. If more than one test point per level range is specified, repeat the previous steps for each test point, from setting the level to the test point on the PXIe-4162/4163 up to this step.
9. Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Remote.
10. Repeat step 6 through step 8 to complete the verification procedure using remote sense.
11. Repeat the previous steps for each channel.

Verifying Voltage Remote Sense

Use the PXIe-4162/4163 in constant current mode with a test circuit to simulate the voltage drop between the device and a load.

Refer to the following table as you complete the following steps.

Table 3. Remote Sense Voltage Output Verification

Level Range

| Limit Range and Limit| Test Point| Load| As-Found Measurement Test Limit| As-Left Measurement Test Limit
---|---|---|---|---|---
1 mA| 24 V| 1 mA| 3 kΩ| ±5 mV|

±2.4 mV

1. Measure the internal device temperature and perform self-calibration if necessary.

a) After measuring the internal device temperature, wait for the internal device temperature to stabilize. Temperature is considered stable when it has not changed by more than ±1 °C in the previous 5 minutes.
b) After the internal temperature has stabilized, if the temperature still exceeds Tcal ± 1 °C, call the self-calibration VI or function.

2. Make the necessary connections for this procedure, as shown in the following figure:

Figure 3. Voltage Remote Sense Verification Connection Diagram³

NI-DCPower Device

3. Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4162/4163.
4. Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Remote.
5. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
6. Set the level on the PXIe-4162/4163 to the specified test point and enable the output.
7. Take a voltage measurement using the PXIe-4162/4163.
8. Record the voltage from the previous step.
9. Verify that the recorded value falls within the test limits.
10. Repeat the previous steps for each channel.

Verifying 10 μA Current Measurement and Output

Compare a set of measured currents reported by the PXIe-4162/4163 to the currents measured by a voltmeter and current shunt.

Refer to the following table as you complete the following steps.

Complete this procedure only after successfully completing all previous verification tests.

————————
³ Follow industry best practices for minimizing thermal electromotive force (EMF) when making the necessary connections for this procedure.

Table 4. 10 µA Current Measurement and Output Verification

Level Range

| Limit Range and Limit| Shunt| Test Point| As-Found Measurement Test Limit ±(% of Current + Offset)| As-Left Measurement Test Limit ±(% of Current + Offset)
---|---|---|---|---|---
10 µA| 24 V| 1 MΩ| -10 µA| 0.10% + 5 nA|

0.075% + 2 nA

0 A

10 µA

1. Measure the internal device temperature and perform self-calibration if necessary.

a) After measuring the internal device temperature, wait for the internal device temperature to stabilize. Temperature is considered stable when it has not changed by more than ±1 °C in the previous 5 minutes.
b) After the internal temperature has stabilized, if the temperature still exceeds Tcal ± 1 °C, call the self-calibration VI or function.

2. Make the necessary connections for this procedure, as shown in the following figure:

Figure 4. 10 μA Current Verification Connection Diagram

1. NI-DCPower Device
2. Precision Shunt

3. Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4162/4163.
4. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
5. Set the level on the PXIe-4162/4163 to the first specified test point.
6. Calculate the current through the shunt by completing the following steps.

a) Configure the DMM for voltage measurements and >10 GΩ input impedance.
b) Take a voltage measurement across the shunt using the DMM.
c) Divide the voltage measurement by the calibrated value of the shunt.
d) Record the calculated value as DMM Measured Current.

7. Calculate the lower and upper current measurement test limits using the following formula:
Current Measurement Test Limits = Test Point ± (| Test Point | * % of Current + Offset )
8. Verify that the calculated DMM Measured Current value falls within the test limits.
9. If more than one test point per level range is specified, repeat the previous steps for each test point, from setting the level to the test point on the PXIe-4162/4163 up to this step.
10. Repeat the previous steps for each channel.

Verifying 100 μA to 60 mA Current Measurement and Output

Compare a set of currents measured by a DMM to the current test points requested by the PXIe-4162/4163.

Refer to the following table as you complete the following steps.

Complete this procedure only after successfully completing all previous verification procedures. Verify level ranges in the order listed in the table.

Table 5. 100 μA to 60 mA Current Measurement and Output Verification

Level Range

| Limit Range and Limit| Test Point| As-Found Measurement Test Limit ±(% of Current + Offset)| As-Left Measurement Test Limit ±(% of Current + Offset)
---|---|---|---|---
100 µA| 24 V| -100 µA| 0.10% + 50 nA|

0.075% + 20 nA

0 A

100 µA

1 mA

| 24 V| -1 mA| 0.10% + 500 nA| 0.075% + 200 nA

0 A

1 mA

10 mA| 24 V| -10 mA| 0.10% + 5 µA|

0.075% + 2 µA

0 A

10 mA

30 mA
(PXIe-4163 only)| 24 V| -30 mA| 0.10% + 25 µA| 0.075% + 10 µA

0 A

30 mA

60 mA
(PXIe-4162 only)| 24 V| -60 mA| 0.10% + 50 µA|

0.075% + 20 µA

0 A

60 mA

1. Measure the internal device temperature and perform self-calibration if necessary.

a) After measuring the internal device temperature, wait for the internal device temperature to stabilize. Temperature is considered stable when it has not changed by more than ±1 °C in the previous 5 minutes.
b) After the internal temperature has stabilized, if the temperature still exceeds Tcal ± 1 °C, call the self-calibration VI or function.

2. Make the necessary connections for this procedure, as shown in the following figure:

Figure 5. 100 μA to 60 mA Current Verification Connection Diagram

NI-DCPower Device

3. Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4162/4163.
4. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
5. Set the level on the PXIe-4162/4163 to the first specified test point.
6. Compare a DMM current measurement to the current measurement test limits.

a) Take a current measurement using the DMM.
b) Calculate the lower and upper current measurement test limits using the following formula:
Current Measurement Test Limits = Test Point ± (| Test Point | * % of Current + Offset )
c) Verify the DMM measurement falls within the test limits.

7. If more than one test point per level range is specified, repeat the previous steps for each test point, from setting the level to the test point on the PXIe-4162/4163 up to this step.
8. If more than one level range is specified, repeat the previous steps using the values specified in each level range.
9. Repeat the previous steps for each channel.

Functional Tests

Verifying Load Regulation (Functional Test)

    Note Although load regulation is listed as a typical specification for the PXIe-4162/4163, verification is required. If the PXIe-4162/4163 fails the load regulation verification procedure, discontinue use of the device and contact an authorized NI service representative to request a Return Material Authorization (RMA).

Refer to the following table as you complete the following steps.

Table 6. Load Regulation Verification

Level Range

| Limit Range and Limit| Test Point| As-Found/As-Left Limit
---|---|---|---
10 mA| 24 V| 0 mA|

±1.5 mV

10 mA

1. Measure the internal device temperature and perform self-calibration if necessary.

a) After measuring the internal device temperature, wait for the internal device temperature to stabilize. Temperature is considered stable when it has not changed by more than ±1 °C in the previous 5 minutes.
b) After the internal temperature has stabilized, if the temperature still exceeds Tcal ± 1 °C, call the self-calibration VI or function.

2. Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Current for the PXIe-4162/4163.
3. Set the niDCPower Sense property or NIDCPOWER_ATTR_SENSE attribute to Local.
4. Make the necessary connections for this procedure, as shown in the following figure:

Figure 6. Load Regulation Verification Connection Diagram

NI-DCPower Device

    Note Connection wires should be 18 or 20 AWG and as short as possible to ensure low resistance. Refer to the pinout information in the Getting Started Guide for your SMU and on the screw terminal breakout board to make the necessary connections.

5. Set the specified level range, limit range, and limit on the PXIe-4162/4163.
6. Configure the PXIe-4162/4163 to output the first specified test point.
7. Take a voltage measurement using the PXIe-4162/4163.
8. Record the voltage from the previous step as V1.
9. Repeat the previous three steps for the other test point specified in the level range. This time, record the value as V2.
10. Calculate the load regulation error using the following formula, and then record the value.
Load Regulation Error = V2 – V1
11. Verify that the recorded value falls within the test limits.
12. Repeat the previous steps for each channel.

Adjustment

This section describes the steps needed to adjust the PXIe-4162/4163 to meet published specifications.

Adjusted Specifications

Adjustment corrects the following specifications for the PXIe-4162/4163:

• Voltage measurement/output accuracy
• Current measurement/output accuracy

Following the adjustment procedure automatically updates the calibration date and temperature on the device.

    Note You do not need to separately adjust both measurement and output. The architecture of the PXIe-4162/4163 ensures that if measurement is accurate, then output is as well, and vice versa.

Initiating the Adjustment Session

Initiate an external calibration session (a specific type of NI-DCPower session) by calling the niDCPower Initialize External Calibration VI or niDCPower_InitExtCal function.

Follow the actions below during adjustment:

• Keep the calibration session open until you complete all adjustment procedures.
• Complete all adjustment procedures in the specified order.
• Do not self-calibrate the device except as specified in a procedure.

Connecting Equipment for Resistor Reference and Voltage Adjustment

Make the necessary connections for this procedure, as shown in the following figure:

Figure 7. Voltage Adjustment Connection Diagram

NI-DCPower Device

Adjusting Resistor Reference

Compare resistance measurements and a ground measurement from a DMM.

1. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to ground.
2. Configure the DMM to take 2-wire resistance measurements in the 100 kΩ range.
3. Take a 2-wire resistance measurement using the DMM to determine the ground reference measurement.
4. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to 100 kΩ.
5. Take a 2-wire resistance measurement using the DMM to determine the resistance reference measurement.
6. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to none.
7. Configure the DMM to take 2-wire resistance measurements in the 10 MΩ range.
8. Take a 2-wire resistance measurement using the DMM to determine the resistance measurement in the 10 MΩ range.
9. Calculate the new value for resistor reference using the following formula:

R = (1/(1/RREF − 1/R10MΩ)) – RGND

where RGND is the resistance measured in step 3 , RREF is the resistance measured in step 5 , and R10MΩ is the resistance measured in step 8.
10. To program the new internal reference value to the PXIe-4162/4163, call the niDCPower Adjust Internal Reference VI or niDCPower_AdjustInternalReference function with the internal reference set to 100 kΩ and adjusted internal reference value set to the new value for the resistor reference.

Adjusting Voltage Measurement and Output

Compare a voltage measurement and a ground measurement from a DMM.

1. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to ground.
2. Configure the DMM to take voltage measurements in the smallest range.
3. Take a voltage measurement using the DMM to determine the ground reference measurement.
4. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to 5 V.
5. Configure the DMM to take voltage measurements in the 10 V range.
6. Take a voltage measurement using the DMM to determine the voltage reference measurement.
7. Use the niDCPower Connect Internal Reference VI or
niDCPower_ConnectInternalReference function to set internal reference to none.
8. Calculate the new value for voltage reference using the following formula:

V = VREF* (1 + 20kΩ/R10MΩ) – VGND

where VGND is the voltage measured in step 3 , VREF is the voltage measured in step 6 , and R10MΩ is the resistance measured in step 8 in the Adjusting Resistor Reference section.
9. To program the new internal reference value to the PXIe-4162/4163, call the niDCPower Adjust Internal Reference VI or niDCPower_AdjustInternalReference function with the internal reference set to 5 V and adjusted internal reference value set to the new value for the voltage reference.

Self-Calibrating the PXIe-4162/4163

Complete the following steps to self-calibrate the PXIe-4162/4163.

1. Disconnect or disable all connections to the PXIe-4162/4163.
2. Call the self-calibration function with all channels.

Adjusting 10 µA Current Measurement and Output

Compare a set of currents measured by an external DMM and current shunt to the current test points requested by the PXIe-4162/4163.

Refer to the following table as you complete the following steps.

Table 7. 10 μA Current Measurement and Output Adjustment

Level Range

| Limit Range and Limit| Test Point
---|---|---
10 μA| 24 V|

-9 μA

9 μA

1. Make the necessary connections for this procedure, as shown in the following figure:

Figure 8. 10 μA Current Adjustment Connection Diagram

1. NI-DCPower Device
2. Precision Shunt

2. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
3. Configure the DMM to measure current in the specified level range.
4. Set the level on the PXIe-4162/4163 to the first specified test point.
5. Allow one second to settle.
6. Take a current measurement using the DMM.
7. Store the value from the previous step to use as an input for the niDCPower Cal Adjust VI or function called in the following steps.
8. If more than one test point per level range is specified, repeat the previous steps for each test point, from setting the level to the test point on the PXIe-4162/4163 up to this step.
9. Update the output calibration constants by configuring and calling the niDCPower Cal Adjust Current Limit VI or niDCPower_CalAdjustCurrentLimit function.

a) Input the DMM measurements as the measured outputs.
b) Input the test points as the requested outputs.
c) Input the specified level range as the range.

10. Repeat the previous steps for each channel.

Adjusting 100 µA to 60 mA Current Measurement and Output

Compare a set of currents measured by an external DMM to the current test points requested by the PXIe-4162/4163.

Refer to the following table as you complete the following steps.

Table 8. 100 μA to 60 mA Current Measurement and Output Adjustment

Level Range

| Limit Range and Limit| Test Point
---|---|---
100 μA| 24 V|

-90 μA

90 μA

1 mA| 24 V|

-0.9 mA

0.9 mA

10 mA| 24 V|

-9 mA

9 mA

30 mA (PXIe-4163 only)| 24 V|

-27 mA

27 mA

60 mA (PXIe-4162 only)| 24 V|

54 mA

-54 mA

1. Make the necessary connections for this procedure, as shown in the following figure:

Figure 9. 100 μA to 60 mA Current Adjustment Connection Diagram

NI-DCPower Device

2. Set the first specified level range, limit range, and limit on the PXIe-4162/4163.
3. Configure the DMM to measure current in the specified level range.
4. Set the level on the PXIe-4162/4163 to the first specified test point.
5. Allow one second to settle.
6. Take a current measurement using the DMM.
7. Store the value from the previous step to use as an input for the niDCPower Cal Adjust VI or function called in the following steps.
8. If more than one test point per level range is specified, repeat the previous steps for each test point, from setting the level to the test point on the PXIe-4162/4163 up to this step.
9. Update the output calibration constants by configuring and calling the niDCPower Cal
Adjust Current Limit VI or niDCPower_CalAdjustCurrentLimit function.

a) Input the DMM measurements as the measured outputs.
b) Input the test points as the requested outputs.
c) Input the specified level range as the range.

10. If more than one level range is specified, repeat the previous steps using the values specified in each level range.
11. Repeat the previous steps for each channel.

Self-Calibrating the PXIe-4162/4163

Complete the following steps to self-calibrate the PXIe-4162/4163.

1. Disconnect or disable all connections to the PXIe-4162/4163.
2. Call the self-calibration function with all channels.

Adjusting Residual Voltage Offset

1. Disconnect all equipment from the output of the PXIe-4162/4163 and insert the output shorting assembly onto the front panel connector.

2. Set the switch on the output shorting assembly to the setting for your SMU: PXIe-4162 or PXIe-4163.

3. With the Output HI, Sense HI, Output LO, and Sense LO terminals shorted, eliminate residual voltage offset at 0 V by configuring and calling the niDCPower Cal Adjust Residual Voltage Offset VI or
   niDCPower_CalAdjustResidualVoltageOffset function.

4. Repeat the previous step for each channel on the PXIe-4162/4163.

Adjusting Residual Current Offset

1. Disconnect all equipment from the output of the PXIe-4162/4163.

2. With terminals open, eliminate current offset at 0 A by configuring and calling the niDCPower Cal Adjust Residual Current Offset VI or
   niDCPower_CalAdjustResidualCurrentOffset function.

3. Repeat the previous step for each channel on the PXIe-4162/4163.

Closing the Adjustment Session

Close the session and commit the new constants to hardware by calling the niDCPower Close External Calibration VI or niDCPower_CloseExtCal function and specifying Commit as the calibration close action.

Alternative to Performing Adjustment Procedures

If your device passes all as-found limits in the verification procedures successfully and you want to skip updating the calibration constants, you can update solely the calibration date by completing the following steps.

    Note NI recommends following all adjustment procedures in order to update the calibration constants and renew the device calibration interval.

1. Call either the niDCPower Initialize External Calibration VI or the niDCPower_InitExtCal function.
2. Call either the niDCPower Close External Calibration VI or the niDCPower_CloseExtCal function, specifying Commit in calibration close action.

Reverification

After completing adjustment, wait a minimum of five minutes for the internal device temperature to stabilize. Repeat the Verification section to determine the as-left status of the device.

    Note If any test fails reverification after performing an adjustment, verify that you have met the test conditions before returning your PXIe-4162/4163 to NI. Refer to the Worldwide Support and Services section for information about support resources or service requests.

Setting the Calibration Due Date

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

1. In MAX, navigate to the External Calibration section of the Settings tab to update the Calibration Due Date entry.
2. 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.

Worldwide Support and Services

The NI 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 information about the services NI offers.

Visit ni.com/register to register your NI product. Product registration facilitates technical support and ensures that you receive important information updates from NI.

A Declaration of Conformity (DoC) is our claim of compliance with the Council of the European Communities using the manufacturer’s declaration of conformity. This system affords the user protection for electromagnetic compatibility (EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration.

NI corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. NI also has offices located around the world. For support in the United States, create your service request at ni.com/support or dial 1 866 ASK MYNI (275 6964). For 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.

PXIe-4162/4163 Calibration Procedure | © National Instruments

Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent 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 NI 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.

© 2018 National Instruments. All rights reserved.

376739A-01   March 21, 2018

References

• Test and Measurement Systems, a part of Emerson - NI
• Test and Measurement Systems, a part of Emerson - NI
• Product Certifications - NI
• Software and Driver Downloads - NI
• Product Documentation - NI
• Contact Us - NI
• Log In - National Instruments
• NI Services - NI
• Support - NI
• NI Trademarks and Logo Guidelines - NI
• Product Certifications - NI
• Software and Driver Downloads - NI
• Product Documentation - NI
• Contact Us - NI
• Log In - National Instruments
• NI Services - NI
• Support - NI
• PXIe-4163 National Instruments PXI Source Measure Unit | Apex Waves

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