Tektronix TDS3012C User Manual page 125

Bottom
Reference
Levels
Indicators
Key Points
Choosing Measurements.
measurements and display them along the right side of the graticule. All
four measurements can apply to a single channel or you can spread the
measurements over several channels. You can also take measurements
on math and reference waveforms.
First push a channel, Math, or Ref button to select the waveform
you want to measure and then select a measurement. (See page 99,
Automatic Measurements.)
Measurement Interaction with Preview.
horizontal control setting while acquisition is stopped or is waiting for
trigger, measurements track the changes and remain valid.
Taking Gray-Scale Measurements.
to take simple measurements on waveforms that contain significant
gray-scale information. The automatic measurements operate only on
the latest acquisition, not on the previous acquisitions that are displayed
in gray scale. However, you can set the cursors to surround and measure
the gray-scale area of the waveform.
TDS3000C Series Oscilloscope User Manual
Side
Set Levels in % or
units
High Reference
Mid Reference
Mid 2 Ref
Low Reference
Set to Defaults
Measurement 1-
Measurement 4
Off
You can perform up to four automatic
Description
Use to choose custom reference levels
in relative or absolute units.
Sets custom high reference level.
Sets custom mid reference level.
Sets the custom mid reference level
for the Delay and Phase measurement
second waveform.
Sets custom low reference level.
Sets reference levels to default values.
Selects the measurement for which to
display markers that show the portion
of the waveform used to calculate the
measurement value.
Turns measurement indicators off.
If you change a vertical or
Using cursors is often the best way
Reference
97