Teac MT-20D-IO - Page 45

In the low-pass filter, each integral time is converted into level output Vc
potential so that it becomes higher against UP(R) and lower against DWN(L),
and thereby the oscillation frequency of the following stage VCO is
controlled.
The reference timing in read operation appears at TPS, and that in write
operation (read after yrite) appears at TP9.
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