DLPU066A March   2018  – April 2022

 

  1. 1Calibration Purpose
    1. 1.1 Calibration Purpose
    2. 1.2 Goal of Calibration
  2. 2Calibration Software and Tools
    1. 2.1 Calibration Software and Tools
  3. 3Calibration Setup
    1. 3.1 Calibration Setup
  4. 4Calibration Overview and Theory
    1. 4.1 Goal of Calibration
    2. 4.2 Calibration Background
      1. 4.2.1 Calibration File Parameters
      2. 4.2.2 Coarse Adjustment Parameter Combinations
    3. 4.3 Calibration Process
      1. 4.3.1 Calibration Pre-work: Coarse Combination Determination
      2. 4.3.2 Temperature Charaterization
      3. 4.3.3 Production PGU Calibration
  5. 5Calibration Pre-work
    1. 5.1 Pre-work Overview
    2. 5.2 Coarse Combination Determination
    3. 5.3 Strategically Adjusting Coarse Combination Parameters
      1. 5.3.1 LDC Index
      2. 5.3.2 Optical Sensor Feedback Gain
      3. 5.3.3 Current Limit
    4. 5.4 Coarse Combination Strategies
  6. 6Calibration Procedure
    1. 6.1 Calibration Procedure Overview
    2. 6.2 Calibration Sweep Setup and Coarse Combinations
    3. 6.3 Temperature Characterization
    4. 6.4 Production PGU Calibration
    5. 6.5 Generating a Calibration File
  7. 7Revision History

Production PGU Calibration

The process for the production PGU calibration sweep is the same as for the pre-production temperature calibration sweeps, but it only needs to be done at one temperature (typically room temperature) for each PGU being calibrated.

  1. Select "Iterative Calibration" >> "Calibration" >> "Sweeps" from the menu on the left.
  2. Set the PGU name.
  3. Set the calibration temperature.
  4. Select the connected light meter.
    GUID-423D160F-2BAA-4096-803A-BD05123A9A70-low.pngFigure 6-11 Iterative Calibration: Individual PGU Sweeps
  5. If using ND filters, the software can automatically correct for color offset introduced by the filter. Color correction data can be recorded during the first per PGU sweep and used in following sweeps.
  6. Enter desired values for measurement delay, number of averaged measurements, min/max PWM values, and increment values. Default values are typically acceptable.
  7. To start the sweep press the "Start Sweep" button.
    GUID-748CED70-1718-4A5C-85C5-01066D239279-low.pngFigure 6-12 Iterative Calibration: PGU Color Correction Factors
  8. As in the temperature sweeps, data from the per PGU sweep can be viewed in the "Sweep Summary" section.
  9. Different PGU sweeps can be compared against each other.
    GUID-D410C4DB-0E8B-4ECD-A841-E7154C13D2E1-low.pngFigure 6-13 Iterative Calibration: PGU Brightness Sweeps