7. SYSTEM SETTINGS
125
• Colorimetry
Select the colorimetry to use on the video-signal-waveform, vector, picture, and CIE-
chromaticity-diagram displays.
The currently applied colorimetry is displayed in cyan in the vector display and CIE
chromaticity diagram display.
For 3G(DL)-4K, if you select a payload ID, the current applied colorimetry is displayed in
yellow if the colorimetries of all links are not matched.
For SD input, the colorimetry is fixed to BT.601, regardless of the colorimetry selection.
The picture display on the instrument LCD is not capable of expressing the color gamut of
the applied colorimetry.
Payload ID: The instrument automatically detects the colorimetry from the payload
ID and operates. In addition, when the payload ID is an XYZ signal, the
instrument operates in DCI mode.
BT-709: Runs in BT.709 mode.
BT-2020: Runs in BT.2020 mode.
DCI: Runs in DCI mode.
• XYZ Gamma Select
Select the gamma correction method for XYZ signal input.
XYZ signals can be converted to RGB signals and displayed as video signal waveforms or
vector waveforms, but with 12-bit quantized value (when DCI Gamma is selected)
specified in standards, conversion errors will be large near 0% of the input. Therefore,
when displaying such as RGB or vector waveforms with SMPTE RP 431 color bar (color
patch) code, there are areas where the waveform deviates greatly from the scale.
To reduce this error, the default is set to "Bottom Zero Gamma". This setting is fixed at 0%
when the input is from 0% to 0.05%. Select this setting if you want to adjust devices.
Bottom Zero Gamma:
when the input is from 0% to 0.05% gamma is fixed at 0% for DCI
gamma.
DCI Gamma: 1/2.6 power of input
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