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HDTV Gray Scale Test Chart

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

The YE0223 is designed for evaluation of the halftone reproduction of electronic cameras. Two 13-graduated counter current gray scales are arranged on a gray background (D = 0.75), the gray scales being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the transmission values (brightness): gamma = 2.2, that being exactly the reciprocal value of gamma = 0.45. The output signal of a optimally gamma-corrected camera yields two 13-gratuated counter current linear step signals.

The contrast range of the gray scales is 200 : 1.

The values of the 11-graduated gray scale are as follows:

 
Step Density Reflectance in %
1 0.05 89
2 0.13 74
3 0.21 62
4 0.30 50
5 0.40 40
6 0.51 31
7 0.63 23
8 0.78 17
9 0.95 11
10 1.15 7
11 1.41 4
12 1.77 2
13 2.35 0.5
 

The density of the white field between the gray scale is D = 0.05 (reflectance = 89 %).

12 Quality Inspection Processes

With 12 rigorous quality inspection processes in place, we ensure a high yield rate of up to 98% for batch processed precision parts.

DFM Analysis
DFM Analysis
Dimensional Tolerance
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Material Testing
CNC Machining
CNC Machining
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FQC Detection
SPC / CPK
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Problem Found
Problem Found
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Problem Solving
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Surface Treatment
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Full Inspection
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FAQs About Grayscale Charts

The repeatability is an important parameter for the accuracy of the colorimeter. Threenh Technology portable colorimeter for color measurements tandard deviation ΔE*ab is within 0.03 (Measurement condition: the average value of 30 measurements on the white board at an interval of 3s after calibration). Each colorimeter can pass the qualified inspection before leaving the factory to ensure it conforms to the standard of China Metrology Institute.

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Who are we? Threnh Technology: 22-Year Professional Color Measurement Solution Provider

Threnh Technology is a Chinese professional Measurement Instrument manufacturer with 22 years of industry experience, specializing in the field of color measurement and surface gloss detection. Integrating research and development, design, production, marketing, and sales, the company takes technological innovation as its core and is committed to providing global customers with high-precision and intelligent testing instruments as well as professional solutions.


a. Users must specify Standard File Name, Sample File Name and Sample Database File Name when first use.

b.Standard File is use to store standard measurement data. Sample File is used to store sample measurement data. Sample Database File is used to store the measured data exported from sample records.

Threenh Technology with excellent after sale service, Generally, Our Spectrophotometer instrument warranty is one years(Additional support period of 3 years). Within the warranty period, we can offer technique support and parts to parts change, necessarily, our engineers may go to your place for better support. Our instrument have professional After-sales Dept, if you have any technical problem or question with our goods welcome to contact us.

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