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Grid Test Chart

Grid Test Chart Instructions Operating Manual Grid Test Chart PDF
This Grid Test Chart Instrument are Certified with
certify
1 Years Warranty (Additional support period of 3 years)

NJ-10-100A is designed for operational adjustment and control of TV cameras. It consists of circles permitting rough visual appraisal of scan linearity, grid lines serving the purpose of adjusting registration and wedges serving the purpose of resolution appraisal.

A grid structure consisting of 23 horizontal and 35 vertical lines is arranged on a white background. 3 grid lines each divide the outer 3 grid rows in the middle. The width of the grid lines is 0.15% of the picture width. The large circular line has a diameter of 83 1/3% of the picture height, the 5 small circular lines have a diameter of 25% of the picture height.

4 resolution wedges are arranged in the large circle at angles of 0°, 45°, 90°, and 135° corresponding to signal frequencies of 2-10 MHz. (The marking ends at 8 MHz and 600 lines).

UTILIZATION

  • The test chart is designed for operational adjustment and control of TV cameras.
  • The circles permit rough visual appraisal of scan linearity.
  • The grid lines serve the purpose of adjusting registration.
  • The wedges serve the purpose of resolution appraisal.

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FAQs About  Geometric Test Charts

Opaque liquids and powders can be put into a cuvette for color measurement. 

The "accuracy" of a colorimeter refers to how closely its measurement results align with the true values, primarily influenced by systematic errors and random errors, how closely its measured color data (e.g., Lab values, density) aligns with the true color properties of a sample or certified standard. Specifically, it includes key indicators such as color coordinate accuracy, luminance accuracy, and data repeatability.

It reflects the instrument’s ability to minimize deviations caused by component variations, environmental factors, or calibration drift—ensuring results reliably represent the actual color, which is critical for quality control and brand consistency in industries like printing, food, textiles, paint and coatings.

 The five common gloss levels are:

1. Flat/Matte (0–10 GU)

2. Eggshell (10–25 GU)

3. Satin (26–40 GU)

4. Semi-gloss (41–70 GU)

High Gloss (71–100+ GU)
These levels vary slightly depending on industry and standards used.


Look for dirty or fingerprinted glass along the optical path, recalibrate with standards, and check the set-up for outside light so that it is controlled. If the problems still exist, please reach out to the helpdesk or book a service with your professional service.

Testing metamerism helps to identify color matches that look the same but are different in different lighting. This helps in ensuring that materials are of the same quality in all light settings.


A haze meter should be calibrated every 6 months, or more frequently if used for certain quality control processes.


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