ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
Visualisations in the device
Recommendations for user interfaces
117
ISO 13406 _Ergonomic requirements for work with visual displays based on flat
panels
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Part 2: Ergonomic requirements for flat panel displays
According to the international standard ISO 13406-2 LCD screens are classified on the basis of the
following criteria:
Luminance, contrast and colour measured by the viewer's direction
Reflections and contrast in case of incident illumination
Image
set-up
time
Faults (pixel faults)
ISO 13407 _ Human-centred design processes for interactive systems
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ISO 13407 is a standard which describes a prototypical human-centred software development
process. A special development process can be considered to conform to the standard if its
recommendations are met.
The standard represents human-centred design as an interdisciplinary activity covering knowledge of
human factors and ergonomic information and techniques. The ISO process consists of four essential
sub-activities:
Understand the context of use:
The result of this activity is a documented description of the relevant users, their tasks and their
environment.
Specify
requirements:
During this phase the targets are deducted from the existing documentation at a compromise
level. The division of the system tasks is defined in...
- tasks to be carried out by people
- tasks to be carried out by technology
Produce
solutions:
This can be done following a prototype development or another iterative process. These
prototypes can be paper drafts (mocks) or executable program versions. If there are company-
internal design rules for user interfaces, they should be used.
Evaluate
solutions:
The solutions are checked for compliance with the defined requirements. To do so, expert
assessments, usability tests, interviews or a combination of these can be used. The determined
deviations are evaluated for their relevance and are a starting point of the next iteration of the
development process.
This method is complementary with existing process models of the software development. According
to the standard the human-centred design process should start in the earliest stage of the project and
should be repeated until the system meets the requirements. The significance and required level of
input for the human-centred design depend on the size and type of the product to be developed. For
smaller projects this is controlled by individuals.
