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displayed on the screen as the ratio reference position (the ratio position at
"0%" and "100%" are respectively marked by a solid line and a dotted line).
Before you set manually, the oscilloscope adopts the default ratio reference
position.
- When "Y-Y" is selected, you can set the vertical measurement unit. When the
source is set to Math1-Math4, this menu is grayed out and disabled.
Press More > Vert. Unit, then rotate the multifunction knob to select the
vertical measurement unit, and then press down the knob to select it. You can
also press Vert. Unit continuously or enable the touch screen to select it. The
available units include "Source" and "Percent(%)".
- Source: measures the amplitude at Y Cursor (taking the channel ground
point as the reference). The measurement results include AY, BY, and ∆Y (its
unit is consistent with that of the current source).
- Percent(%): measures ratio at Y Cursor. The measurement results include AY,
BY, and ∆Y, and they are all expressed in percentage.
This oscilloscope allows you to set the ratio reference position according to
your needs. After adjusting Y Cursor to a desired position, press Set
Reference to take the current cursor position as the reference. The current
positions of Cursor A and Cursor B are respectively defined as "0%" and
"100%". Meanwhile, two cursors (in blue) that cannot be moved are
displayed on the screen as the ratio reference position (the ratio position at
"0%" and "100%" are respectively marked by a solid line and a dotted line).
Before you set manually, the oscilloscope adopts the default ratio reference
position.
5. Set LA Type
When the measurement source is set to "LA", you need to set the LA display type.
Press More, and then press La Type continuously to select "HEX" or "BIN".
6. Measurement Example
Measure the period of a sine wave by using the manual cursor measurement and
Auto measurement respectively. The measurement results are both 1 ms, as shown
in
Figure 9.3
.
Operations and Measurements
192
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