Performance Specifications - LG 31HN713D-B.AWH Owner's Manual

Performance specifications

We perform the physical laboratory test according to the 'Display Devices for Diagnostic Radiology – Guidance
for Industry and Food and Drug Administration Staff' like below and we set the acceptance criteria for the
physical laboratory test, the product was all passed according to the criteria.
Test detail
1
Spatial resolution
- Measurements of the transfer of information from the image data to the luminance fields at different
spatial frequencies of interest typically done by reporting the modulation transfer function.
2
Pixel defects
- Measurements (count, types (e.g., sub-pixel or entire pixel), always-on, always-off), and locations (map)
of pixel defects.
3
Artifacts
- Evaluate for image artifacts such as ghosting and/or image sticking from displaying a fixed test pattern for
a period of time.
4
Temporal response
- Measurements of the temporal behavior of the display in responding to changes in image values from
frame to frame.
5
Luminance (achievable and recommended)
- Measurements of the luminance that the device outputs as used in the application under recommended
conditions and the achievable values if the device is set to expand the range to the limit.
6
Conformance to a grayscale-to-luminance function (e.g., DICOM GSDF)
- Measurements of the mapping between image values and the luminance output following a target model
response for 256 or more levels.
7
Luminance at 30 ° and 45 ° in diagonal, horizontal, and vertical directions at center and four corners
- Measurements of the luminance response at off-normal viewing related to the target model for the
luminance response.
8
Luminance uniformity or Mura test
- Measurements of the uniformity of the luminance across the display screen.
9
Stability of luminance and chromaticity response with temperature and time of operation or on-time
- Measurements of the change in luminance and chromaticity response with temperature and use time.
10
Spatial noise
- Measurements of the spatial noise level as represented by the noise power spectrum using an appropriate
ratio of camera and display pixels.
11
Reflection coefficient
- Measurements of the reflection coefficients of the display device.
12
Veiling glare or small-spot contrast
- Measurements of the contrast obtained for small targets.
13
Color tracking
- Chromaticity at different luminance levels of gray shades, including the white point, as indicated by the
color coordinates in an appropriate units system
14
Gray tracking (gray shades and white point)
- Chromaticity at different luminance levels of gray shades, including the white point, as indicated by the
color coordinates in an appropriate units system
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