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Vertical Scale
Knob
Adjust the volts/division for the channel. As this knob is
adjusted, the displayed waveform will change its height
on the screen. Press the knob to switch between coarse
and fine adjustments. The scale setting is displayed in the
channel information at the right side of the screen.
Vertical
Position Knob
Adjust the waveform position (offset) on the screen. The
offset voltage or current will be shown at the right side
of the screen under the scale setting. Press the knob to
set the offset to zero.
To Enable the Channel
The oscilloscope's analog channels vertical settings are independently controlled. The controls
for each channel are analogous. CH1 will be used in the following discussion.
Connect a signal to the CH1 analog input connector. Press the 1 button in the VERTICAL control
area of the front panel to turn on channel 1. The channel can be displayed on the screen when
the 1 button is lit. The channel's vertical menu is displayed on the softkeys and you will see the
CH1 annotation at the left of the screen above the softkeys, which tells you which channel's
settings can be modified by the softkeys.
Adjust the Vertical Scale
By pressing the vertical scale knob, the knob can be used for coarse or fine adjustments:
The coarse adjustment sets the vertical scale in 1-2-5 steps, such as 1 mV/div, 2 mV/div, 5
mV/div, 10 mV/div, etc. The range of the settings will depend on the probe attenuation factor
set. For an attenuation of 1X, the settings range from 500 µV/div to 10 V/div.
The fine adjustment changes the vertical scale in smaller increments (depending on the set
value). For example, if you set the coarse adjustment to 1 V/div and press the button to
change to fine adjustment, one counterclockwise click of the knob will change the scale to
1.02 V/div.
The fine adjust mode can be used to make the waveform take up the whole screen, which will
improve the resolution of measurements taken from the screen's graticule (i.e., the grid).
When the scale control is adjusted, the words Fine or Coarse will appear in the Adjust softkey
(you can use this softkey to toggle between fine and coarse adjustment modes).
To convert a vertical distance on the screen to a voltage or current, read the channel's scale value
from the right-hand side of the screen and multiply it by the number of vertical divisions covering
the feature of interest.
Note:
To stop displaying the channel's trace on the screen, press the channel button until its light goes
out.
