5.6 Information Display
5.6.1 General Display Requirements
5.6.1.1 Lack of Ambiguity
Display indicators should clearly and unambiguously direct and guide the appropriate control response.
5.6.1.2 Use of Digital Displays
Digital displays should be used for the presentation of quantitative data when exact values are required and continuous trend or rate of change information is not required.
5.6.1.3 Digital Readout
A digital readout should not be used when the information changes with a frequency of more than 0.5 Hz; a higher frequency may be used when the information perception from other displays is not disturbed. Besides, a digital readout should not be used for steering.
5.6.1.4 Update of Information
The displayed information should be continuously updated.
5.6.1.5 Information Duration
For signals or displays which frequently or consistently change their outputs, the information displayed should have duration's of sufficient length to be reliably detected under expected operator workload and operational environment.
5.6.1.6 Display Simplicity
Displays should present the simplest information consistent with their function; information irrelevant to the task should not be displayed, and extraneous text and graphics should not be present.
5.6.1.7 Only Necessary Data Displayed
Displayed data should be tailored to users needs, providing only necessary and immediately usable data for any transaction; do not overload displays with extraneous data.
5.6.1.8 Uncluttered Displays
Displays should be as uncluttered as possible
5.6.1.9 Display of Important Information
Highly important and/or frequently used information should be permanently displayed.
5.6.1.10 Display Fields for the Display of Important Information
The display fields for the presentation of the most important and/or frequently used information should be assigned exclusively to them and should not be used to display any other information.
5.6.1.11 Graphic Display Enhancement With Numeric Values
When precise reading of a graphic display is required, the display should be annotated with actual data values to supplement their graphic representation.
5.6.1.12 Indication of Scale
The scale of maps and charts (data) shown on the display should always be indicated.
5.6.1.13 Aiding Distance Judgements
When a user must judge distances accurately on a map or other graphic display, computer aids should be provided for that judgement.
