Owon HSA1000 Series - Page 30

4.Quick Start
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Control the reference level
⚫Set the center or start frequency (FREQ→ [Center Freq] or
[Start Freq]): Swipe left or right in the display area.
Control the center frequency
⚫Set the Span (Span→[Span]):In the trace display area, place
two fingers horizontally on the touch screen and close or
separate to reduce the increase of the sweep width and achieve
the effect of horizontally enlarging or shrinking the trace.