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Finding the right screen for your control room
Follow this step-by-step guide to find a screen suited to your control room. For further information and guidance, please contact your local dnp partner.
Step 2 - Select projector/screen resolution
1) Select display size
Screen size is normally the first thing to be determined when designing a control room. Optimal screen size is conditioned by two factors: the amount and form of information to be displayed; and the operators’ viewing positions.
The crucial thing is that all information displayed should be easy for the human eye to view, read and understand. Use the following guidelines to help you arrive at the appropriate screen size for your instillation:
- the viewing distance should be no more than 200 times character height.
- the viewing distance should be at least twice and no more than 8 times the height of the total image. The ideal viewing distance is 4 times image height. In situations where the operator is monitoring only a part of the entire display, obviously this guideline is not relevant.
2) Select projector/screen resolution
The optimal screen size and viewing distance also depend on projector resolution.
- for XGA (1024 x 768) a maximum viewing distance of 6 times total image height is recommended
- for SXGA (1280 x 1024) a maximum viewing distance of 4.5 times total image height is recommended
- for SXGA+ (1400 x 1050) a maximum viewing distance of 4.4 times total image height is recommended