DTD Calculator

DTD Calculator is a software application that enables users to turn modelines into DTDs, with support for real-time results display. It comes packed with just a few settings that can be easily altered.

The installation procedure takes little time to finish and does not require special attention from the user. Once it is done, you can run the app to view a standard window with multiple panels dedicated to calculation, tuning, reverse calculation, EDID interpretation, and registry hack.

All you have to do is input the modelines, namely the pixel clock (in MHz), H active pixels and V active lines, together with H and V start of sync pulse, end of sync pulse and end of blanking interval. You can enable interlace mode and choose a sync profile.

DTD Calculator computes the hexadecimal values for the aforementioned options, together with the ones for user-defined H and V image size and borders. It lets you select the stereo and sync mode as well. Alternatively, you can choose one of the numerous profiles with standard timings to view the calculated DTD.

The application shows a graphical representation for the tuning and allows you to use a ruler and navigate it, facilitates reverse calculation by inputting the DTD with all 18 bytes and a space between each, and enables you to paste EDID blocks to interpret them. The registry hack section shows the number of identified DTDs and is able to create modelines from them.

DTD Calculator runs on a light amount of CPU and RAM, so it does not burden system resources. It has a good response time and displays calculations quickly. No error dialogs were shown in our testing, and the tool did not hang or crash. DTD Calculator serves its purpose.