About Tektronix oscilloscopes Looking at waveform details
On-screen MultiView Zoom menu item
Front-panel MultiView Zoom button
Trigge
ring, timebase, and horizontal delay
The architecture of an analog oscilloscope requires its time bases and triggering to be linked. The
main t
rigger triggers the main time base, and then you can use a delayed trigger to trigger a delayed
time base. Many digital oscilloscopes have also been designed using this traditional, but complex,
paradigm.
This instrument uses a simpler paradigm that cleanly separates the concepts of triggering and time
bases. You can still do everything that you could with an analog oscilloscope and more. Now these
features are easier to set up and use.
The trigger e vent can be simple or complex. Examples of a simple trigger are the ris i ng edge of the
Channel 1 signal or a glitch narrower than 10 ns on Channel 2. You can set up a complex trigger
where the trigger system is armed by a c ondition on o ne channel a nd then is triggered by a condition
on another channel. In either case, simple or complex, there is j ust one trigger event.
The time base can be either delayed o r not delayed. If it is not delayed, acquisition occurs surrounding
the trigger event depending on the amount of pretrigger
(see page 46) and posttrigger (see page 448)
data that you have selected. If you turn on horizontal delay, you can delay the acquisition to a point
well beyond the trigger event (similar in effect to a delayed time base). By alternately turning
horizontal delay on and off, you can make quick, detailed comparisons between two segments of a
signal that are separated from each other by a fixed amount of time. In any case, the time base is
always triggered by one trigger event.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 47
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