| 摘要 |
A frequency modulation deviation control system in a camcoder printed circuit board is constructed in such a manner that a computer 100 which converts input data and judges if it is the maximum point is connected to a PCB assembly 60 through a port expander 20 and deck 70 converting an input signal into a recorded state, the computer 100 being connected to the PCB assembly 60 through a GPIB which transmits pattern commands and a signal generator 30 which generates no signal having no pattern, the port expander 20 is connected to a multiplexer 90 selecting a predetermined frequency, a trigger board 50 waveform-shaping the input signal to divide the trigger signal and an A/D converter 40, the PCB assembly 60 being connected to the A/D converter 40 through a bandpass filters 80 and 80', multiplexer 90 and trigger board 50, and the computer 100 controls a motor 10' through a motor controller 10 when the converted input data is not the maximum point to allow the motor 10' to automatically adjust the adjusting point 60' of the PCB assembly 60.
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