In addition to these FAQs, you can find further information on the following pages:
Tetratune is designed for use with the ColourSpace software product from Light Illusion, and this is currently the only means of uploading LUTs to the unit, so you will need access to a ColourSpace software license whenever you want to perform a calibration and/or update the LUTs. With this in mind, the following items are required:
We support common formats with resolutions up to 4K @ 60 fps, but please check that any formats you plan to use are listed in our product specification. Please also remember to check whether any HDR and audio formats that you need to use are supported.
Tetratune allows up to 100 LUTs to be uploaded, which would be a pretty long list to scroll through when selecting which to use. To help you organise your LUTs and to support our EOTF-based automatic LUT selection feature, we have introduced these tags.
The Input tag is mapped to the supported EOTF modes and can be controlled manually, or automatically. The screen and mode tags are always manually selected, so can actually be used however you wish, with screen and mode just being suggested use cases. For example, if you have multiple screens that you wish to use with your unit, then you can use the screen tags to label your LUTs with the target screen name, but if you only want to drive a single screen, then you might instead use the screen tags to represent different calibration dates, or target colorspaces.
Whilst you can't increase the number of screen/mode slots, there are no constraints on how you make use of these. This means that if, for example, you are only targeting a single screen, you might consider using the "Screen" tags for something else, such as target colorspace, or calibration date. The only parameter that has any automated behaviour is "Input", which can be automatically selected based on the incoming EOTF.
When using Tetratune as a color patch generator for calibration, the video format is controlled by the ColourSpace software. Currently, ColourSpace requires a video source to be connected so that it can match the calibration video format to that of the incoming signal. For this reason, a source of the correct video format must be connect to the Tetratune unit whilst using it as a patch generator.
When uploading a LUT to Tetratune from ColourSpace, the maximum length of the LUT name is currently 50 characters.
Like other HDMI devices, Tetratune uses something called an EDID to signal to the source device what video & audio formats it will accept. We allow this EDID to be configured in the user interface, so if you're not able to select the format you want, and that format is supported by your source device, Tetratune, and your display, then the problem could be that your EDID needs reconfiguring. For details of how to do this, please refer to the section titled "Video and Audio Format Compatibility (EDID Profile)" in the manual.
We thought of that! All you need to do is disconnect or turn off your video source whilst Tetratune is connected to your display. The IP address is displayed on the "No Input" screen on Tetratune's HDMI output.