EN IEC 60098:2020 pdf free.Analogue audio disk records and reproducing equipment (IEC 60098:2020).
Specification: the relative output levels (in dB) as a function of frequency of any given channelactivated by signals intended for that channel, when the relative signal levels are in accordancewith the standard recording characteristic.
Method: a standard test record (see Annex D) is played,which carries either fixed or sweptfrequencies intended for the channel to be measured.The variations of output level (in dB) asa function of frequency are plotted on a graph.
Result: for stereo use, the response of left and right channels to the respective left and rightsignals is quoted in graph form. For mono use, the response of the mono channel to lateralsignals is quoted in graph form.
Specification: the relative output levels (in dB) as a function of frequency of any given channelactivated by signals intended for the opposite channel, when the relative signal levels are inaccordance with the standard recording characteristic.
Method: a standard test record (see Annex D) is played， which carries either fixed or sweptfrequencies intended for the channel opposite to that which is to be measured.The variationsin output level (in dB) as a function of frequency are plotted on a graph.
Result: for stereo use only, the response of left and right channels to the respective right andleft signals is quoted in graph form, preferably on the same graph as the signal response.
Specification: the ability to maintain contact between the reproducing stylus and both wallsof the groove when playing a specified test record at the recommended stylus force.
Method A: low-frequency tracking ability:
The relevant bands of a specified test record (see Annex E) are played at the recommendedstylus force, and the output is monitored via an amplifier by means of a loudspeaker and anoscilloscope. Poor tracking is indicated by a buzz-like audible distortion and a visiblediscontinuity of waveform on the oscilloscope.The maximum recorded amplitude that can beplayed without distortion is noted for left and right channels.
Result: low-frequency tracking ability = smallest of left and right recorded amplitudes.
Method B: low to middle frequency sweep tracking ability:
The relevant bands of a specified test record (see Annex E) are played at recommendedtracking force, and the output is monitored via an amplifier with rated reproducing characteristicon a loudspeaker, an oscilloscope and a level recorder.Poor tracking is indicated by a buzz-like audible distortion, a clearly visible discontinuity of waveform on the oscilloscope and aclearly visible discontinuity in the frequency characteristic curve from the level recorder. Themaximum recorded velocity at 315 Hz giving satisfactory tracking is noted for each channel.
This method also exposes partial resonances of head-shells，cartridge connectors and armpivots, and is particularly effective for low compliance pickups.
Result: ow to middle frequency sweep tracking ability = smallest of left and right recordedvelocities at 315 Hz.EN IEC 60098 pdf download.