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VERTICAL
• CH1, CH2, CH3, CH4: analog input channel switches. The four chan-
nels are marked by different colors which are also used to mark the
corresponding waveforms on the screen and the channel input con-
nectors. Press any key to turn on the corresponding channel and open
the corresponding channel menu; press again to turn off the channel.
• VERTICAL POSITION: channel vertical position knobs. Turn the knob to
modify the vertical position of the corresponding channel waveform.
During the modication, the waveform of the corresponding channel
moves up and down; the vertical position information pops up at the
lower-left side of the screen in real-time. Pressing down the knob can
quickly reset the vertical position (zero).
• VERTICAL SCALE: channel vertical scale knobs. Turn the knob to modify
the vertical scale of the corresponding channel waveform. During the
modication, the waveform of the corresponding channel is expand-
ed or compressed vertically (the actual amplitude keeps unchaged);
the vertical scale information at the bottom of the screen changes
accordingly. Pressing down the knob can quickly switch the vertical
scale adjustment mode between “Coarse” and “Fine”.
• MATH: press this key to open the math operation function menu. You
can perform addition, subtraction, multiplication, division, FFT, digital
lter, logic operations and advanced operations.
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