Position control circuit for a digital oscilloscope

Details Position control circuit for a digital oscilloscope Position control circuit for a digital oscilloscope

G - Physics

01

R

324/59

G01R 13/02 (2006.01) G01R 13/20 (2006.01) G01R 13/30 (2006.01) G01R 13/34 (2006.01)

Patent

CA 1150358

-9- Abstract A digital oscilloscope is provided with a position control circuit which permits positioning of a signal both before and after digitizing. A track and hold circuit is coupled to the position control potent- iometer to generate a reference voltage which tracks the position voltage in a waveform acquisition mode, and which is held at a fixed level in a display mode while the position voltage, which is applied to the acquisition preamp, is variable adjustable. A summa- tion circuit subtracts the reference voltage from the position voltage to provide an altered positioning voltage for the display amplifier which is zero in the acquisition mode and variable in the display mode.

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