Press [CH1]→“Next”→“Digital filter”→“ON”, and open digital filter function, as
shown in figure 2-17.
Figure 2-16 Digital filter OFF Figure 2-17 Digital filter ON
2.5.2 Application of [POSITION] knob and [Volt/div] knob of the
vertical system
Vertical [POSITION] knob
1. The knob is used for regulating vertical offset of the waveform of the channel in
where the knob is. The resolution is changed according to the vertical gear.
2. The knob can be pressed to return the vertical offset to zero.
[Volt/div] knob
1. The knob can be used for regulating the vertical gear of the channel in where the
knob is so as to amplify or attenuate the signal of the channel waveform. The gear
information of the channel is displayed in the lower part of the screen.
2. The knob can be pressed to switch between “Coarse tuning” and “Fine tuning”, and
the sensitivity of the vertical gear is determined by a 1-2-5 stepping mode in coarse
tuning. Fine tuning represents further regulation at the current gear so as to display
the waveform needed.
2.5.3 Implementation of MATH function
The arithmetical operation (MATH) function realizes waveform addition, subtraction,
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