Rigol DS8000-R Series User Manual page 168

RIGOL
click 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.
When "Y" is selected under Select, you can set the vertical measurement
⚫
unit. When the source can be Math1-Math4, this menu is grayed out and
disabled.
Click More → Vert. Unit to select the vertical measurement unit. 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 reference position for the ratio
according to your needs. After adjusting Y Cursor to a desired position,
click 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.
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 6-3.
6-40
Chapter 6 Operations and Measurements
DS8000-R User Guide