Manufacturer test discs for CD players are typically discs that conform absolutely to the appropriate standards such as reflectivity, thickness, flatness, eccentricity and of course error count.
The music content (or test signal/s) on a disc always look the same viewed on a scope (viewing the RF).
A good commercial disc is usually fine for all normal checks and adjustments.
The music content (or test signal/s) on a disc always look the same viewed on a scope (viewing the RF).
A good commercial disc is usually fine for all normal checks and adjustments.
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