| 摘要 |
<p>A driving apparatus for a plurality of pulse motors for simultaneously carrying out adjustments of a plurality of adjusting points which are interdependent. Driving devices (222X to 222Z) that are rotatably driven by a plurality of pulse motors (225X to 225Z) respectively are coupled to adjusting devices of, for instance, a horizontal oscillator circuit, a vertical output circuit and a power supply (221X to 221Z) which are mounted on a printed circuit board. The output signals of the circuits are converted into measured digital data through a digital frequency counter (223X), a first digital voltmeter for vertical amplitude measurement (223Y), and a second digital voltmeter for power supply voltage measurement (223Z) respectively. The respective measured data are compared with reference data in digital comparator circuits (224X to 224Z), which produce stop signal or changeover signal of rotational direction to each corresponding pulse motor in response to the results of the comparison. When all the comparator circuits produce simultaneously stop signals, the driving pulses for all the pulse motors are discontinued by a logic circuit (230). </p> |
