GIMP Version: 2.8.14
Operating System: Windows
GIMP Experience: Basic Level

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Hi,
I'm trying to create test images (files) for a TV broadcast test signal generator.
The parameter requirements are as follows:

Format: TIFF
Type: Native (Files converted to TIFF from other formats are not supported)
Extension: .tif
Pixel Resolutions: 1280 x 720, 1920 x 1080, 2048 x 1080, 3840 x 2160, 4096 x 2160
Bit Depth: 16 per RGB Component, 48 per Pixel
Pixel Order: Interleaved
Note: Full range TIFF image files are clipped to full protect range; no scaling is applied.

The above requirements are extracted from the device's user manual. I'm also attaching some original files for reference.
Can anyone please help me in making such a file?

Thank you,
Sovy