The YE0165 is designed for evaluation the halftone reproduction of 16:9 electronic cameras. Two 11-graduated counter current gray scales are arranged on a gray background (D ≈ 0.56), the gray scale corresponds to the ITU recommendation BT.709.
The output signal of an optimally gamma-corrected camera according to BT.709 generates two counter current, linear step signals.
The contrast range of the gray scale is 40 : 1.
The values of the 11-graduated gray scale are as follows:
Step | Density | Remission in % | Video signal for BT.709 in % | Video signal for gamma 0.45 in % |
1 | 0.05 | 89 | 100 | 100 |
2 | 0.13 | 74 | 91 | 92 |
3 | 0.22 | 60 | 82 | 84 |
4 | 0.32 | 48 | 73 | 75 |
5 | 0.43 | 37 | 64 | 67 |
6 | 0.56 | 28 | 55 | 59 |
7 | 0.70 | 20 | 46 | 51 |
8 | 0.88 | 13 | 37 | 43 |
9 | 1.08 | 8 | 28 | 35 |
10 | 1.34 | 5 | 19 | 26 |
11 | 1.64* | 2 | 11 | 19 |
*The production process for reflective charts allow a maximum printed density of 1.64. The target value for the darkest step is 1.70. Therefore the distance of the last step differ slightly.
Two black fields and a white field are located between the gray scales. The density of the black fields in the middle is D > 3 (remission < 0.1 %), the white field between has a density of 0.05 (remission 89.9%).
Recommended usage:
Adjust the aperture until the lightest patch reaches 100% video signal at the waveform monitor. With an optimally corrected camera according to ITU recommendation BT.709 the darkest patch will reach 10% signal level.
When using this chart with a gamma correction of 0.45 the video signal level for each step will change as listed in the table above.
With 12 rigorous quality inspection processes in place, we ensure a high yield rate of up to 98% for batch processed precision parts.
FAQs About Grayscale Charts
a. When the colorimeter is disconnected to the PC, "Connection Timeout" will occur. At the moment, you have to check whether the USB cable is well connected the colorimeter and the PC. Then you can re-plug the USB to try out.
b. After ensuring the colorimeter is connected to the PC with USB cable, turn on the colorimeter and enter the main menu. Select "Comm" and press "Enter" key to start communication.
c. Turn off CQCS3 software, and reopen it.
Threenh Technology colorimeter is shipped with an operating instructions and video of English version.If you need an electronic version of the user manual, you can download it from our website download center
Since part of the light will pass through the light-transmitting materials, the colorimeter is not suitable for color measurement of such kinds of materials; however, when place a pure color material with uniform texture under the light-transmitting material, we can measure the color difference between the standard and the sample.
At most of time, we have Spectrophotometer stock in the factory. Generally it is 1-3 working days after the payment confirmed. After shipped, we will email you the tracking number. You can check the shipping status of your order on the website. If you are in urgent need, we can consider making special arrangement for you.
Yes. We can supply OEM and make customized design for any specific application. Our MOQ for OEM and ODM service is 5 pcs for one model. We can not only offer standard machines, but also customized machines. Don’t hesitate to tell us your requirement, we will try our best to meet your needs.