Making Measurements 5
6000 Series Oscilloscope User’s Guide 235
measurement thresholds. Each analog channel and the
math waveform can be assigned unique threshold values.
3 Press the Ty pe softkey to set the measurement threshold to
% (percentage of Top and Base value) or to Absolute
(absolute value.)
• Percentage thresholds can be set from 5% to 95%.
• The units for absolute threshold for each channel is set
in the channel probe menu.
• When the Source is set to Math, the threshold Type can only
be set to Percent.
4 Press the Lower softkey, then turn the Entry knob to set
the lower measurement threshold value.
Increasing the lower value beyond the set middle value
will automatically increase the middle value to be more
than the lower value. The default lower threshold is 10%
or 800 mV.
If threshold Ty pe is set to %, the lower threshold value can
be set from 5% to 93%.
5 Press the Middle softkey, then turn the Entry knob to set
the middle measurement threshold value.
Source
select
Threshold
Type
Lower
Threshold
Middle
Threshold
Upper
Threshold
Return to
previous menu
Absolute threshold hints
• Absolute thresholds are dependent on channel scaling, probe attenuation, and
probe units. Always set these values first before setting absolute thresholds.
• The minimum and maximum threshold values are limited to on-screen values.
• If any of the absolute threshold values are above or below the minimum or
maximum waveform values, the measurement may not be valid.
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