EN 62122:2002
(Main)Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances
General Information
- Abstract
Specifies the basic methods of measurement for evaluating the electronic and mechanical performance of consumer-use digital VTRs. Enables checks of the interchangeability and characteristics of the equipment under test and enables evaluation of the quality of image and sound.
- Status
- Published
- Publication Date
- 05-Jun-2002
- Withdrawal Date
- 30-Apr-2005
- Technical Committee
- CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
- Drafting Committee
- IEC/TC 100 - IEC_TC_100
- Parallel Committee
- IEC/TC 100 - IEC_TC_100
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 27-Apr-2026
- Completion Date
- 25-Aug-2026
Overview
EN 62122:2002 (adopting IEC 62122:2002) - published by CLC - defines standardized methods of measurement for consumer‑use digital VTRs (video tape recorders). The standard specifies basic procedures to evaluate both electronic and mechanical performance of consumer digital VTRs, enabling reproducible checks of interchangeability and assessment of image and sound quality. It is intended as a harmonized test framework for manufacturers, test labs and conformity assessment bodies.
Key topics and technical requirements
EN 62122:2002 covers a comprehensive set of measurement subjects and required test conditions, including:
- Measuring conditions: environmental, power supply, required test signals and measuring instruments (noise meters, audio generators, level meters, etc.).
- Mechanical characteristics:
- Tape speed and speed fluctuation measurement
- RF envelope flatness
- Linearity and effective head/track starting position
- Track displacement measurement using image‑processing techniques
- Video (analogue I/O) characteristics:
- Luminance and chrominance amplitude frequency response
- Diagonal/luminance resolution and frequency characteristics
- Waveform distortion (linear and nonlinear), vertical/horizontal displacement between luminance and chrominance
- Signal‑to‑noise ratios for luminance and chrominance
- Composite signal decoding (luminance/chrominance separation), including 3D processing evaluations
- Audio (analogue I/O) characteristics:
- Operational input/output voltages (with/without AGC)
- Maximum output, amplitude frequency response, harmonic distortion and inter‑channel phase
- Measurement presentation: standardized ways to record and present test results for comparability and interchangeability.
The standard references related IEC/ITU documents for test signals and methods (see Related Standards).
Applications and who uses it
EN 62122:2002 is practical for:
- Consumer electronics manufacturers - design validation and production testing of digital VTRs.
- Test laboratories and QA teams - repeatable performance verification, benchmarking and quality control.
- Repair and service centers - diagnosing mechanical or signal problems to defined measurement procedures.
- Conformity assessment bodies and regulators - consistent compliance testing and certification traces.
- R&D teams - comparing analogue/digital front‑end and signal decoding performance.
Use cases include assessing interchangeability of tapes/recorders, quantifying image/sound degradation, verifying AGC behavior and measuring mechanical tape handling.
Related standards
EN 62122:2002 aligns with and cites several international standards, for example:
- IEC 61041 series (VTR measurement methods)
- IEC 61834 series (digital helical‑scan cassette systems)
- IEC 60094‑3 (magnetic tape sound measurement)
- ITU‑R BT.500 and BT.1204 (subjective picture quality and digital/analogue measurement guidance)
Keywords: EN 62122:2002, IEC 62122, consumer digital VTR, measurement methods, video tape recorder testing, audio/video performance, signal‑to‑noise ratio, track displacement, luminance chrominance.
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
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Frequently Asked Questions
EN 62122:2002 is a standard published by CLC. Its full title is "Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances". This standard covers: Specifies the basic methods of measurement for evaluating the electronic and mechanical performance of consumer-use digital VTRs. Enables checks of the interchangeability and characteristics of the equipment under test and enables evaluation of the quality of image and sound.
Specifies the basic methods of measurement for evaluating the electronic and mechanical performance of consumer-use digital VTRs. Enables checks of the interchangeability and characteristics of the equipment under test and enables evaluation of the quality of image and sound.
EN 62122:2002 is classified under the following ICS (International Classification for Standards) categories: 33.160.40 - Video systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 62122:2002 has the following relationships with other standards: It is inter standard links to EN ISO 15614-10:2005, EN 61041-5:1997, HD 527 S1:1989, EN 61834-1:1998, EN 60094-3:1996, EN 61041-1:1995. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 62122:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.