EN 61223-2-4 : 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
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
Annex ZA (normative) Other international publications
quoted in this standard with the references of the
relevant European publications

Applies to hard copy cameras producing images on monochrome continuous tone material (such as photographic films and materials sensitive to infrared radiation), and comprising types of cameras using a cathode ray-tube, laser beam, or a thermoprinting system, as used in medical diagnostic imaging systems.