1. Manuals
  2. Brands
  3. National Instruments Manuals
  4. Control Unit
  5. NI 9234
  6. Calibration procedure

National Instruments NI 9234 Calibration Procedure

4-channel, ±5 v, 24-bit software-selectable iepe and ac/dc analog input module
Hide thumbs Also See for NI 9234:
Table of Contents

Advertisement

Quick Links

Download this manual
NI-9234

Advertisement

Table of Contents
loading

Related Manuals for National Instruments NI 9234

Summary of Contents for National Instruments NI 9234

  • Page 1 NI-9234...

  • Page 2: Table Of Contents

    Reverification ........................... 15 Accuracy Under Calibration Conditions .................. 15 Worldwide Support and Services ..................... 16 Software Calibrating the NI 9234 requires the installation of NI-DAQmx 9.2 or later on the calibration system. You can download NI-DAQmx from . NI-DAQmx supports ni.com/downloads LabVIEW, LabWindows /CVI, C/C++, C#, and Visual Basic .NET.

  • Page 3: Documentation

    Documentation Consult the following documents for information about the NI 9234, NI-DAQmx, and your application software. All documents are available on and help files install with the ni.com software. NI cDAQ-9174/9178 USB Chassis Quick Start NI-DAQmx installation and hardware setup...

  • Page 4: Test Equipment

    DC with an accuracy ≤0.1% while Measure 2400 Compliance Unit (SMU) Voltage sinking >2 mA DC. BNC Cable — Use a length appropriate for your application. Chassis NI cDAQ-9178 — NI 9234 Calibration Procedure | © National Instruments | 3...

  • Page 5: Test Conditions

    • Keep relative humidity below 80%. • Allow a warm-up time of at least 10 minutes to ensure that the NI 9234 measurement circuitry is at a stable operating temperature. Initial Setup Complete the following steps to set up the NI 9234.

  • Page 6: Verification

    Verification The following performance verification procedures describe the sequence of operation and test points required to verify the NI 9234 and assumes that adequate traceable uncertainties are available for the calibration references. Accuracy Verification Complete the following procedure to determine the As-Found status of the NI 9234.

  • Page 7: Gain Matching Verification

    Complete the following procedure to determine the As-Found status of the NI 9234. Set the calibrator to Standby mode (STBY). Connect the NI 9234 to the calibrator. Refer to Figure 2 for a connection diagram. Figure 2. Gain Matching Verification Connections to the NI 9234 –...
  • Page 8 10. Repeat steps 1 through 9 for each channel. 11. Compare the channel-to-channel gain difference to the maximum limit of ±40 mdB. If the Gain Matching verification procedure determines that the NI 9234 is outside of the limits, Worldwide Support and Services refer to for assistance in returning the device to NI.

  • Page 9: Phase Matching Verification

    Channel Configuration Volts AC Coupled Note Wait 20 s for the AC coupling filter on the NI 9234 to settle. Configure the AI voltage task timing according to Table 9. Table 9. NI 9234 Timing Configuration Sample Mode Samples Per Channel...

  • Page 10: Common-Mode Rejection Ratio Verification

    Generator Frequency (kHz) Phase Matching Channel-to-Channel Limit ±0.085° ±0.49° If the Phase Matching verification procedure determines that the NI 9234 is outside of the limits, Worldwide Support and Services refer to for assistance in returning the device to NI. Common-Mode Rejection Ratio Verification Complete the following procedure to determine the As-Found status of the NI 9234.
  • Page 11 Acquire a reference amplitude. Create and configure an AI voltage task on the NI 9234 according to Table 12. Table 12. NI 9234 Configuration for CMRR Verification Min (V) Max (V) Scaled Units Channel Configuration Volts DC Coupled Configure the AI voltage task timing according to Table 13.

  • Page 12: Iepe Current Verification

    Compare the DMM measurement to the minimum current limit of 2.0 mA. Repeat steps 1 through 4 for each channel. If the IEPE Current verification procedure determines that the NI 9234 is outside of the limits, Worldwide Support and Services refer to for assistance in returning the device to NI.

  • Page 13: Iepe Compliance Voltage Verification

    IEPE Compliance Voltage Verification Complete the following procedure to determine the As-Found status of the NI 9234. Connect the NI 9234 to the DMM as shown in Figure 6. Figure 6. IEPE Compliance Voltage Verification Connections to the NI 9234 (IEPE Source Short Circuit Current Measurement) –...
  • Page 14 Connect the SMU to the channel you want to verify on the NI 9234. Refer to Figure 7 for a connection diagram. Figure 7. IEPE Compliance Voltage Verification Connections to the NI 9234 (IEPE Source Compliance Voltage Measurement) – AI x...

  • Page 15: Adjustment

    Initialize a calibration session on the NI 9234. The default password is Input the external temperature in degrees Celsius. Call the NI 9234 get C Series adjustment points function to obtain an array of recommended calibration voltages for the NI 9234.

  • Page 16: Reverification

    The following calibration specifications are valid under the following conditions: • Ambient temperature 23 ±5 °C • NI 9234 installed in slot 8 of an NI cDAQ-9178 chassis • Slots 1 through 7 of the NI cDAQ-9178 chassis are empty Note The test limits listed in Table 4 are derived using the values in Table 21.

  • Page 17: Worldwide Support And 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.

Table of Contents