| 摘要 |
<p>Analogue value, a trigger signal, a horizontal and a vertical fly-back pulse signals corresponding to the value to be set, and an operational supply voltage are applied to the circuit. An indicator beam signal and a further signal are available at its output. The circuit has means by which a reference beam as the lower field, minor field or shifting field beam is made simultaneously visible on the TV screen together with the indicating beam, whose beginning and end correspond to the zero and maximum of the value to be set.</p> |
