How to add a custom SPD curve or color calibration to a fixture profile in Hog 4OS

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ETC and its support staff currently do not fulfill requests to provide color calibration for Hog fixture profiles. Hog console operators seeking improved color mixing accuracy for unmeasured fixture profiles are encouraged to use the tools described in section 5.11.1 fo the Hog OS help manual.

Snippet of the Help Manual section 5.11.1

Modifying the SPD Curve and Scaling of Additive Color Functions:

Additive Color Mixing functions have two features that can be adjusted in the edit fixtures window. These features impact how the console calculates physical color mixing values for the fixture when the virtual color mixing tools are used and vice-versa. Editing the default value of these features is only recommended when a fixture's color output does not match expected results.

The SPD Curve feature offers the ability to associate the function with a different spectral power distribution curve. The curves available include a series of generic curves with properties that generally match industry standard LEDs. The most common use case for changing the SPD Curve assigned to a function is to shift the LED's peak wavelength. Common examples include changing a blue SPD Curve to an indigo SPD Curve or changing a cool white SPD Curve to a neutral white SPD Curve.

The Scaling feature offers operators the ability to indicate the real-world brightness of an LED in relation to the SPD curve. When scaling is set to 100% the implication is that the LED on the fixture matches the brightness of the SPD. Setting the scaling to a value of 50% implies that the LED is 50% as bright as the SPD curve. Please note that scaling cannot be set above 100%. While it is possible to achieve decent results through manual adjustment of SPD scaling, it is recommended to use the ETC Relative Brightness Calculator spreadsheet in coordination with a calibrated spectrometer to determine the most appropriate scaling adjustments for color accuracy.

Adjusting SPD Curve and/or Scaling defaults does not alter the relationship between the real-world value range of an Additive Color mixing function and the DMX Channel value. For example, even if the Red function scaling default is 60%, the operator can still achieve the full DMX range for the fixture's Red emitter through use of the physical Red function.

Changes made to SPD Curve and Scaling defaults are applied on a per fixture, per function basis.