Oscilloscope R eference Horizontal trigger position
Horizontal trigger position
Horizontal position is an adjustable feature that defines where the trigger occurs on the waveform record.
It lets you choose how much the instrument acquires before and after the trigger event. The part of the
record that o
ccurs before the trigger is the pretrigger portion. The part that o ccurs after the trigger is
the posttrigger portion. A longer posttrigger period may be useful when you want to see the effects an
event has on your system under test.
Pretrigger data can be valuable when troubleshooting. For example, if you are trying to fi nd the cause of
an unwanted glitch in your test circuit, you can trigger on the glitch and make the pretrigger period large
enough to capture d ata before the glitch. By analyzing what happens before the glitch, you may uncover
information that helps you find the source of the glitch.
What do you want to do next?
Learn about trigger coupling. (see page 700)
Learn about trigger slope. (see page 700)
Learn a
bout glitch triggers.
(see page 705)
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 701