EN 61223-2-5:1994

Introduction
1. Scope and object
1.1 Scope
1.2 Object
2. Normative references
3. Terminology
3.1 Degree of requirements
3.2 Use of terms
3.3 Definitions
4. General aspects of CONSTANCY TESTS
4.1 General conditions affecting test procedures
4.2 Establishment of BASELINE VALUES
4.3 Frequency of CONSTANCY TESTS
4.4 Identification of equipment, instrumentation and
     test conditions
4.5 Measured functional parameters
5. Test methods
5.1 Summary
5.2 Test equipment
5.3 Test procedure
5.4 Data evaluation
5.5 Criteria to be applied
5.6 Test report
5.7 Action to be taken
5.8 Frequency of testing
6. Statement of compliance
Figures
1. Schematic representation of a test pattern used to
     check the constancy with respect to grey-scale
     reproduction
2. Schematic representation of a test pattern used to
     check the constancy with respect to geometry and
     line structure
3. Schematic representation of a crosshatched pattern
     used to carry out measurements with respect to
     geometry
4. Schematic representation of a test pattern used to
     check the constancy with respect to resolution
5. Schematic representation of a test pattern used to
     check the constancy with respect to colour-related
     aspects
6. Preventive measures to establish optimal working
     conditions in workstations
Annexes
A. Terminology - Index of terms
B. Example of a form for the standardized test report
C. Guidance on action to be taken
D. Rationale
E. Bibliography - Reference test pattern
F. IMAGE DISPLAY DEVICES in workstations: Environmental
     conditions
Annex ZA (normative) Other international publications
quoted in this standard with the references of the
relevant European publications

Applies to image display devices as used in diagnostic imaging systems. Describes a method to check, in terms of functional parameters the constancy of the quality of images reproduced by image display devices.