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Under the window scale mode the screen is divided into two display areas as the
above picture shows. The upper part displays the original waveforms, which can
move left and right through rotating the horizontal POSITIONAL control or can
enlarge and reduce the selected areas through rotating the knob horizontal SCALE.
•
The lower part displays the horizontal scale waveform.
Note:
that scale time base improves definition compare with the main time base (as the
above picture shows).
•
Because the waveforms displayed by the whole lower part are corresponding to the
areas selected by upper half part, rotating the horizontal SCALE control to reduce
the selected areas can improve the scale time base, namely, can improve the
waveforms horizontal SCALE multiple.
Note:
The max scale time base is 200ns/div.
Independent Time Base
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In independent time base, CH1~CH4 can be arranged in timing, so that the channel
can observe signals of different frequencies.
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As shown below, CH1 is a 100kHz sine wave, CH2 is a 10 Hz square wave, CH3
10kHz triangular wave, CH4 1kHz pulse wave. By using the independent time base,
frequency signals with large variation can be observed.
