National Instruments PXI-4110 Calibration Procedure
  1. Manuals
  2. Brands
  3. National Instruments Manuals
  4. Power Supply
  5. PXI-4110
  6. Calibration procedure

National Instruments PXI-4110 Calibration Procedure

Triple-output programmable dc power supply
Hide thumbs Also See for PXI-4110:
Table of Contents

Advertisement

Quick Links

Download this manual
CALIBRATION PROCEDURE
NI PXI-4110
Triple-output Programmable DC Power Supply
This document contains information for calibrating the NI PXI-4110 (NI 4110) triple-output
programmable DC power supply. For more information about calibration, visit
ni.com/calibration
Contents
Software.................................................................................................................................... 2
Related Documentation ............................................................................................................ 3
Password ................................................................................................................................... 3
Calibration Interval................................................................................................................... 3
Test Equipment......................................................................................................................... 4
Test Conditions......................................................................................................................... 4
Calibration Procedures ............................................................................................................. 5
Initial Setup....................................................................................................................... 5
Verification....................................................................................................................... 6
Verifying Voltage Programming Accuracy.............................................................. 7
Verifying Voltage Measurement Accuracy .............................................................. 8
Verifying Current Programming Accuracy .............................................................. 10
Verifying Current Measurement Accuracy .............................................................. 12
Verifying Load Regulation....................................................................................... 14
Verifying Line Regulation........................................................................................ 19
Adjustment........................................................................................................................ 24
Considerations .......................................................................................................... 25
Adjusting Voltage Programming Accuracy ............................................................. 26
Adjusting Voltage Measurement Accuracy.............................................................. 27
Adjusting Current Programming Accuracy.............................................................. 28
Adjusting Current Measurement Accuracy .............................................................. 29
Where to Go for Support .......................................................................................................... 30
.

Advertisement

Table of Contents
loading

Related Manuals for National Instruments PXI-4110

Summary of Contents for National Instruments PXI-4110

  • Page 1: Table Of Contents

    CALIBRATION PROCEDURE NI PXI-4110 Triple-output Programmable DC Power Supply This document contains information for calibrating the NI PXI-4110 (NI 4110) triple-output programmable DC power supply. For more information about calibration, visit ni.com/calibration Contents Software............................ 2 Related Documentation ......................3 Password ........................... 3 Calibration Interval........................

  • Page 2: Software

    NI-DCPower in the LabWindows/CVI environment. NI-DCPower header file, which you must IVI\Include\nidcpower.h include in any C program accessing calibration functions. This file includes the entire NI-DCPower API, including calibration functions. 2 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 3: Related Documentation

    The default calibration password is Calibration Interval National Instruments recommends that you perform a complete calibration for the NI 4110 at least once a year. You can shorten this calibration interval based on the accuracy demands of your application. Refer to the Where to Go for Support section for more information.

  • Page 4: Test Equipment

    Allow a warm-up time of at least 15 minutes after the NI-DCPower driver is loaded. Unless manually disabled, NI-DCPower automatically loads with the operating system and enables the device. The warm-up time ensures that the measurement circuitry of the NI 4110 is at a stable operating temperature. 4 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 5: Calibration Procedures

    Initial Setup Refer to the NI PXI-4110 Getting Started Guide for information about how to install the software and hardware and how to configure the device in MAX. Tables 3 and 4 list configuration information for the calibration equipment required for verification.

  • Page 6: Verification

    Verification of the NI 4110 is complete only after you successfully complete all tests in this section. If verification fails post-adjustment, confirm that you meet the required Test Note Conditions before you return the NI 4110 to NI for repair. 6 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 7: Verifying Voltage Programming Accuracy

    To ensure that the system has had adequate time to settle, wait one second after requesting a new voltage before taking a measurement with the DMM. The voltage measurement test limits in Table 5 are derived from the voltage programming accuracy specifications plus an offset voltage. NI PXI-4110 Calibration Procedure | © National Instruments | 7...

  • Page 8: Verifying Voltage Measurement Accuracy

    Test Limit (V) column for the iteration of channel x in Table 6. If the output voltage that you measure is outside the test limit, you must adjust the NI 4110. 8 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 9 Table 6. NI 4110 Output Parameters and Test Limits for Voltage Measurement Accuracy Verification Channel Iteration Output (V) Current Limit (A) Test Limit (V) ±0.004000 ±0.004750 ±0.005500 ±0.006250 ±0.007000 ±0.005000 ±0.007500 ±0.010000 ±0.012500 ±0.015000 ±0.005000 ±0.007500 ±0.010000 ±0.012500 ±0.015000 NI PXI-4110 Calibration Procedure | © National Instruments | 9...

  • Page 10: Verifying Current Programming Accuracy

    The values in the Output (A) column are the settings for the current limit. This Note column is labeled Output because the current limit is the value that the NI 4110 generates. 10 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 11 0.750000 ±0.006063 1.000000 ±0.008000 20 mA 25,000 0.000400 ±0.000060 † 2,000 0.005000 ±0.000068 1,000 0.010000 ±0.000075 0.015000 ±0.000083 0.020000 ±0.000090 0.020000 ±0.004030 0.250000 ±0.004375 0.500000 ±0.004750 0.750000 ±0.006063 1.000000 ±0.008000 NI PXI-4110 Calibration Procedure | © National Instruments | 11...

  • Page 12: Verifying Current Measurement Accuracy

    Refer to the following figure for the necessary connections. Figure 3. Current Measurement Connection Diagram NI PXI-4110 Load – – Current Mode NI APS-4100 AUX IN + Auxiliary Power Supply – AUX IN – 12 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 13 ±0.002000 ±0.004 1.25 ±0.002050 ±0.004375 ±0.002500 ±0.00475 3.75 ±0.004000 ±0.006063 ±0.005500 ±0.008000 † 1, 2 open ±0.002000 ±0.004 ±5 ±0.002050 ±0.004375 ±10 ±0.002500 ±0.00475 ±15 ±0.004000 ±0.006063 ±20 ±0.005500 ±0.008000 NI PXI-4110 Calibration Procedure | © National Instruments | 13...

  • Page 14: Verifying Load Regulation

    Any failure of the Voltage Measurement Verification or Current Measurement Verification steps may result in a failure of the Load Regulation Verification steps. Connect the NI APS-4100 to the Aux Power Input connections for load regulation tests. 14 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 15 ) × 2.00 × 10 Subtract the two voltage measurements V to calculate the Voltage Change. The test passes if the Voltage Change falls within the calculated Voltage Change Limit. NI PXI-4110 Calibration Procedure | © National Instruments | 15...
  • Page 16 Table 10. NI 4110 Voltage Load Regulation Verification Points Measured Voltage Change Voltage Channel V Range I Range I Limit V Level Load R Load R (mA) (mA) Limit (V) Change (V) Ω Ω Ω Ω 20 V 10 V Ω...
  • Page 17 ±7.00 × 10 × (V Subtract the two current measurements I to calculate the Current Change. The test passes if the Current Change falls within the calculated Current Change Limit. NI PXI-4110 Calibration Procedure | © National Instruments | 17...
  • Page 18 Table 12. NI 4110 Current Load Regulation Verification Points Measured Current Change Current Channel V Range I Range V Limit I Level Load R Load R Limit (A) Change (A) Ω Ω 500 mA Ω Ω 20 V 20 mA 20 V 10 mA 1.8 k...

  • Page 19: Verifying Line Regulation

    Refer to Figure 6 for the necessary connections. Figure 6. Voltage Line Regulation Verification Connection Diagram NI PXI-4110 Voltage Mode – AUX IN + Variable Power Supply – AUX IN – NI PXI-4110 Calibration Procedure | © National Instruments | 19...
  • Page 20 ) + 1.00 × 10 ) × (V ext1 ext2 Subtract the two voltage measurements V to calculate the Voltage Change. The test passes if the Voltage Change falls within the calculated Voltage Change Limit. 20 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 21 Table 14. NI 4110 Voltage Line Regulation Verification Points Measured Voltage Change Voltage Channel V Range I Range I Limit V Level Limit (V) Change (V) ext1 ext2 20 V 100 mA 10 V 15.5 V 11 V 20 V 100 mA -10 V 15.5 V...
  • Page 22 ) + 2.00 × 10 ) × (V ext1 ext2 Subtract the two voltage measurements I to calculate the Current Change. The test passes if the Current Change falls within the calculated Current Change Limit. 22 | ni.com | NI PXI-4110 Calibration Procedure...
  • Page 23 Table 16. NI 4110 Current Line Regulation Verification Points Measured Current Change Current Channel V Range I Range V Limit I Level Limit (A) Change (A) ext1 ext2 20 V 20 mA 10 V 20 mA 15.5 V 11 V 20 V 10 V 15.5 V...

  • Page 24: Adjustment

    • Adhere to the guidelines listed in the Test Conditions section. • Perform self-calibration prior to starting the adjustment procedure. • Ensure that the ambient temperature is 23 °C ± 1 °C. 24 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 25: Considerations

    To adjust all voltage and current ranges simultaneously, open a single calibration session, execute multiple adjustment steps, and then close the session with an action of Commit to write coefficients for multiple ranges simultaneously. NI PXI-4110 Calibration Procedure | © National Instruments | 25...

  • Page 26: Adjusting Voltage Programming Accuracy

    DMM to the Measured Outputs input of the VI. Call this VI or function once per range. Table 17. NI 4110 Output Parameters for Voltage Programming Accuracy Adjustment Channel Iteration Output (V) Current Limit (A) 26 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 27: Adjusting Voltage Measurement Accuracy

    VI, and pass the voltage values measured by the DMM to the Measured Outputs input of the VI. Call this VI or function once per range. Table 18. NI 4110 Output Parameters for Voltage Measurement Accuracy Adjustment Channel Iteration Output (V) NI PXI-4110 Calibration Procedure | © National Instruments | 27...

  • Page 28: Adjusting Current Programming Accuracy

    Current Voltage Equivalent Output Channel(s) Range Iteration Setpoint (V) Resistance (Ω) 0.050 0.375 0.750 0.050 0.375 0.750 20 mA 9,600 0.001 0.010 0.020 0.050 0.375 0.750 20 mA 9,600 0.001 0.010 0.020 28 | ni.com | NI PXI-4110 Calibration Procedure...

  • Page 29: Adjusting Current Measurement Accuracy

    Commit on the niDCPower Close External Calibration VI function). Adjustment of the NI 4110 is niDCPower_Close_External_Calibration now complete. Repeat the Verification section to reverify the performance of the NI 4110 NI PXI-4110 Calibration Procedure | © National Instruments | 29...

  • Page 30: Where To Go For Support

    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.

Table of Contents