NF EN 61079-5 : 1994

Committees responsible
National foreword
Foreword
Section 1: General
1.1 Scope and object
1.2 Normative references
Section 2: General explanation of terms
2.1 MAC/packet decoder unit
Section 3: General notes on measurements
3.1 General conditions
3.2 Setting of the decoder
3.3 Video, audio and digital test signals
3.4 Reference signals
3.5 Standard measuring conditions
3.6 Measuring instruments
Section 4: Video signal measurements
4.1 Video signal distortion
4.1.1 Amplitude versus frequency response
4.1.2 Group delay characteristics
4.1.3 Automatic amplitude and phase measurements within
       the video band
4.1.4 Pulse response
4.1.5 Bar signal response
4.1.6 Low-frequency distortion
4.1.7 Linearity
4.1.8 Response to a ramp signal in the case of scrambled/
       descrambled signals
4.2 Unwanted signals
4.2.1 Signal-to-noise in nominal conditions
4.2.2 Suppression of energy dispersal signal
4.2.3 Spectrum aliasing
4.3 Time domain demultiplexing
4.3.1 Accuracy of colour decoding
4.3.2 Delay between luminance and chrominance channels
4.3.3 Relative delays of R,G,B signals
4.4 Noise sensitivity
4.4.1 Video output signal-to-noise ratio versus input
       signal-to-noise ratio
4.4.2 Clamp efficiency in the presence of noise
4.5 Conformity of composite synchronization signal
4.6 Miscellaneous video measurements
Section 5: Data recovery
5.1 Clock recovery in the presence of noise
5.2 Bit error rate due to random noise
5.3 Audio-click perceptibility in the presence of noise
Section 6: Audio measurements
6.1 Audio-frequency characteristics
6.2 Harmonic distortion of audio channels
6.3 Dynamic range of audio channels
6.4 Audio crosstalk
6.5 Phase difference between left and right channels
6.6 Audio signal-to-noise ratio
Figures
Annexes
A. (normative) Analytical description
B. (informative) Bibliography
ZA. (normative) Other international publications quoted
       in this standard with the references of the relevant
       European publications

Defines the conditions and methods of measurement to be applied to MAC/packet decoder units. Does not cover the specifications of the limit values of the various parameters of the decoder.