Tektronix DPO4032, User Manual, Page: 304 / 359

Application Examples
4. Push More repeatedly until you select
Reference Levels from the popup menu.
Reference
Levels
5. Push Set Levels in to select units . Set Levels
in
% | Units
6. Push High Ref and turn multipurpose knob a
to enter 2.00 V. If needed, push Fine to change
the sensitivity of the multipurpose knob.
High Ref
(a) 2.00 V
Mid Ref
7. Push Low Ref and turn multipurpose knob a to
enter 800 mV. If needed, push Fine to change
the sensitivity of the multipurpose knob.
Low Ref
(a) 800 mV
Rise time is typically measured between the 10% and 90% amplitude levels of a signal. These are the default reference levels
that the oscilloscope uses for rise time measurements. However, in this example, you need to measure the time that the signal
takes to pass between the 0.8 V and 2.0 V levels.
You can customize the rise time measurement to measure the signal transition time between any two reference levels. You
can set each of these reference levels to a speci
fi c percent of the signal amplitude or to a speci fi c level in vertical units (such
as volts or amperes).
278 MSO4000 and DPO4000 Series Oscilloscopes User Manual