IEC 62389 pdf download Methods of measurement for DVD players
This International Standard specifies measurement methods of electrical characteristics forconsumer-use DVD players. This standard is applicable for use in the description ofperformances for cataiogues and brochures of the products.
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 61672-1，Electroacoustics – Sound level meters – Part 1: Specifications
IEC 61672-2,Electroacoustics – Sound level meters – Part 2: Pattern evaluation tests
IEC 61606-1，Audio and audiovisual equipment – Digital audio parts – Basic measurementmethods of audio characteristics – Part 1: General
IEC 61606-2，Audio and audiovisual equipment – Digital audio parts – Basic measurementmethods of audio characteristics – Part 2: Consumer use
ITU-R BT.471-1,Nomenclature and description of colour bar signals
SMPTE EG 1,1990，Alignment colour bar test signal for television picture monitors
3Terms and definitions
For the purposes of this document,the terms and definitions given in lEC 61606-1 and lEC61606-2,as well as the following, apply.
composite video signal including synchronization signal
s video signal
video signal separately transferred by Y signal and C signal
NOTE The Y signal is composed of the luminance signal and the synchronization signal from the composite videosignal and does not include the chrominance signal. The C signal is the modulated chrominance signal.
set of three kinds of signals,Y signal and two chrominance signals
v or H synchronized sweep signal
video test signals that frequency is swept within a certain frequency range by vertical orhorizontal synchronization timing.
expression of the video signal format which has 525 scanning lines in a frame and is
video signal level
voltage value of the video signal measured from sync tip to white peak
equipment under test
visible limit of horizontal resolution calculated by the horizontal frequency characteristics of the luminance signal and expressed by the number of TV lines
video signal-to-noise ratio
ratio of noise r.m.s. value to reference level of 1 00 %, 0,71 4 V r.m.s. in NTSC, 0,7 V r.m.s. in PAL, at the flat area of the luminance signal
video signal output level
peak-to-peak value of the reference video output signal at reference load impedance
audio output signal level
output voltage of playback reference signal
4 Measuring conditions
4.1 Conditions for both audio and video
4.1.1 Power supplies
4.1.1 .1 Voltage
The a.c. power voltage supplied shall be the fixed value of the region where the device under test (DUT) is used and the supplied d.c. power voltage shall be the fixed value specified by the manufacturer. The tolerance shall be within ±1 % in both cases; the power-supply voltage can be within ±5 % if this tolerance does not affect the results of measurement.