| 摘要 |
The equipment serves to control the tracing of a center mark and of an arc of a circle centered on said mark on a fluorescent screen. A first controller adapted to deliver a first deflecting voltage, which determines the x coordinate of said mark, is operable by a knob to effect coarse and fine adjustments of said first deflecting voltage. A second controller adapted to deliver a second deflecting voltage, which determines the y coordinate of said mark, is operable by said knob to effect coarse and fine adjustments of said second deflecting voltage. Change-over means are provided for conditioning said first and second controllers for said coarse and fine adjustments. A third controller serves to control the radius of said circle. |
