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User Manual 27
To Adjust the Vertical Scale
The vertical scale can be adjusted in Coarse or Fine mode.
●
Coarse adjustment (take counterclockwise as an example): set the vertical scale in
1-2-5 steps namely 500uV/div, 1 mV/div, 2 mV/div, 5 mV/div, 10 mV/div …10 V/div.
●
Fine adjustment: Adjust the vertical scale within a finer adjustment range to
improve vertical resolution. For example: 2 V/div, 1.98V/div, 1.96V/div, 1.94 V/div …1
V/div.
Use: If the amplitude of the input waveform is a little greater than the display full scale
under the current scale settings, and the amplitude would be too low if the next scale is
used, then fine adjustment can be used to optimise the amplitude of waveform display
to correctly view the signal details.
Press the CH1 button on the front panel; then press the Adjust softkey to select the
desired mode. Turn the VERTICAL Variable Knob to adjust the vertical scale (clockwise
to reduce the scale and counterclockwise to increase).
The scale information in the channel label at the right side of the screen will change
accordingly during the adjustment. The adjustable range of the vertical scale is related to
the probe ratio currently set. By default, the probe attenuation factor is 1X and the
adjustable range of the vertical scale is from 500uV/div to 10 V/div.
Note: push the VERTICAL Variable Knob to quickly switch between Coarse and Fine
adjustments.
To Adjust the Vertical Position
Turn the VERTICAL Position Knob to adjust the vertical position of the channel
waveform. Turn the knob clockwise to increase the vertical position and the channel
waveform moves up while counterclockwise to reduce the vertical position and the
waveform moves down. Push the knob to set the vertical position of the channel waveform
to zero.
During the adjustment, the vertical position information Volts Pos displays at the bottom of
the screen. The table below shows the range of vertical position according to the volt
scale.
Volt Scale Range of Vertical Position
500 μV/div - 100 mV/div ±2V
102 mV/div - 1 V/div ±20 V
1.02 V/div - 10 V/div ±200 V