High Accuracy Universal Measuring Probe Model 71241

  • Taiwan Excellence 2022
HighAccuracyUniversalMeasuringProbe
Key Features
  • Luminance and chromaticity measurement of color display
  • Low luminance measurement: 0.001 cd/m2 
  • Wide luminance display range: 0.0001 to 6,000 cd/m
  • High test accuracy: ≤ ±0.002 (> 0.1 cd/m2)
  • Chromaticity coordinates presentation: xyY, T△uvY, u' v' Y, XYZ
  • FMA and FLVL for flicker measurements 
  • Memory storage for 100 sets of standard color values and calibration data
  • Built-in flat display calibration data LED-D65 for instant chromaticity measurement
  • 0-Calibration remote control
  • USB control interface for power supply
  • Integrated host and probe

Chroma 71241 High Accuracy Universal Measuring Probe performs contact-less measurements to test the luminance and chromaticity of display panels. Developed with the most advanced digital signal processor and optoelectronic conversion technology as well as precision optical parts and circuit design, the probe performs high-speed, accurate, and stable color tests.

Chroma 71241 is equipped with a sensor that complies with the CIE1931 color matching functions and accurately measures the luminance and chromaticity of display panels. Users can freely switch between various types of chromaticity coordinates through the xyY, TΔuvY, u'v'Y, and XYZ presentation methods, as well as FMA and FLVL flicker measurement modes.

Chroma 71241 is designed to test the characteristics of LCDs with LED backlight and meets the low luminance test requirements down to 0.001cd/m2. The probe also provides the functions of contrast measurement, result judgment, and programmable test items to fulfill automated test requirements and enhance production efficiency.

Chroma 71241 comes with an optical measurement software that enables users to execute chromaticity, luminance, flicker, and gamma measurements on a PC, and directly shows the test results through coordinates on CIE 1931 and CIE1976 UCS color space chromaticity diagrams. The built-in memory can store up to 100 sets of standard color values and calibration data.

Chroma 71241 High Accuracy Universal Measuring Probe presents the best choice for improving efficiency and competitiveness in the production of LCD panels.

  Application Architecture

  Flicker Measurement Structure

The Chroma 71241 complies with the FMA (Flicker Modulation Amplitude) standards defined by VESA (Video Electronics Standards Association) and JEITA (Japan Electronics Information Technology Industries Association) for flicker measurement. The system can also be paired with Chroma's FPD Tester for a completely automated flicker adjustment.

  Optical Measurement Software

Chroma 71241 Display Color Analyzer features an optical measurement software which streamlines storing the measured data into PC with EXCEL® exporting capabilities. The software also features sample programs of optical measurement for users to swiftly develop and tailor a program that suits their needs.

Color Measurement

The user interface shows digital and analog color measurements simultaneously, values can also be shown as xyY, TΔuvY, u′v′Y, XYZ. There are four configurable display modes available such as single or continuous sampling.

Gamma Measurement

Gamma values for red, green, blue, and white four colors can be measured while connected to Chroma’s Video Pattern Generator. The measurement can be configured as standard Gamma curve or shown the Gamma curve and value of each tested color up to 4096 (12bit) levels.

Flicker Measurement

The 71241 probe supports FMA and FLVL Flicker measurement modes. The FMA Flicker measurement can see the ratio of luminance change (AC) and fundamental quantity (DC) (AC/DC); while the FLVL (JEITA/VESA) Flicker measurement can separate the AC quantity of all different frequencies. With the Optical Measurement Software the Flicker of each frequency can be shown on the graph and it makes the frequency spot that generates the Flicker easily identified.

Color Calibration

For calibration requirements, the Optical Measurement Software is able to read the UUT readings directly and save the work from copying data by the user also prevent the problem caused by copy error to improve the calibration efficiency and accuracy.

Program Editing

The editable test item functions simplifies the programming either on the main unit or via PC; the user friendly interface allows saving edited test programs which can be exported and shared with other test systems.


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All specifications are subject to change without notice.
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