8
Circuit Description
erence frequencies, which are utilized by the phase com-
parator.
The phase comparator section of
Q1003
(
MB15A01PFV1
)
compares the phase between the frequency-divided os-
cillation frequency of the VCO circuit and comparative
frequency and its output is a pulse corresponding to the
phase difference. This pulse is integrated by the charge
pump and loop filter of
D1012
(
DA221
) and
Q1016
(
DTC144EE
) into a control voltage (VCV) to control the
oscillation frequency of the VCO.
Summary of Contents for VX-120 Series
Page 4: ...4 Exploded View Miscellaneous Parts Note ...
Page 5: ...5 Block Diagram ...
Page 6: ...6 Block Diagram Note ...
Page 14: ...14 MAIN Unit ...
Page 31: ...13 ...
