Overview
IEC 62389:2005 - Methods of measurement for DVD players defines standardized electrical measurement methods for consumer DVD players. It specifies how to measure video and audio electrical characteristics so manufacturers, test laboratories and product writers can describe performance consistently in catalogues and brochures. The standard applies to consumer-use DVD players and references a normative test disc (Annex A) and other IEC/ITU/SMPTE documents.
Key topics and technical requirements
- Scope and purpose: Measurement methods for video and audio electrical characteristics; intended for product performance description.
- Test signals and test disc: Uses a dedicated test disc (Annex A) containing signals such as V/H synchronized sweep (100 kHz–6.75 MHz), 50% white, SMPTE/ITU-R colour bars and audio full-scale tones (1 kHz).
- Video measurements:
- Horizontal resolution measured from sweep signal (read frequency at −20 dB point and calculate TV lines).
- Video signal-to-noise ratio (SNR) using 50% white signal and a video noise meter (HPF 100 kHz / LPF 6 MHz).
- Video output level measured with SMPTE/ITU colour bars and an oscilloscope (peak-to-peak).
- Audio measurements:
- Audio-frequency response, distortion, dynamic range, SNR and output level follow IEC 61606-1/2 procedures and use sampling-rate specific test points (48 kHz, 96 kHz, 192 kHz).
- Typical audio test signals: full-scale 1 kHz tones, –60 dBFS for dynamic range, and zero-level digital for SNR.
- Measuring conditions:
- Power supply tolerances (nominal voltage ±1% normally; ±5% acceptable if it does not affect results), AC frequency 50/60 Hz ±2%, waveform distortion limits (AC harmonic content ≤2%, DC ripple ≤0.1%).
- Environmental conditions: ambient 15–35 °C, relative humidity 60% ±15%, air pressure 96 kPa ±10 kPa; warm-up period ≈5 minutes.
- Instruments: Oscilloscope (d.c. to >60 MHz), video noise meter (100 kHz–6 MHz), display monitor, 75 Ω terminator and audio measurement instruments conforming to IEC 61672 and IEC 61606.
Applications and users
- Manufacturers: Verify and publish video/audio specs in datasheets and brochures.
- Test laboratories: Perform repeatable, internationally comparable performance tests.
- Product managers / technical writers: Create accurate marketing claims (horizontal resolution, video SNR, audio dynamic range).
- Regulatory and procurement teams: Compare products using consistent measurement data.
Related standards
Keywords: IEC 62389:2005, DVD player measurements, video horizontal resolution, video signal-to-noise ratio, audio dynamic range, test disc, measurement methods for DVD players.