Application Exa
mples
4. Push B1.
5. Push Bus B1 on t
he lower menu, use
multipurpose knob a to select RS-232,
and enter the parameters of the bus in the
resulting scr
een menus.
6. Push Bus Display on the lower menu, push
Bus and Waveforms on the side menu, and
push ASCII on the side menul.
7. Turn the Horizontal Scale k nob to adjust the
timebase.
As you increase the time per division, you
will see m ore data appear in the Bus display.
8. Push Trigger Menu. Select the Bus trigger
type. Define what type of condition to trigger
on, such as the Tx Start Bit.
9. Push Search, push Search on the lower
menu, and select On from the side m enu.
10. Push Search Type. Use multipurpose knob
a to select Bus. Push Search For and
select the desired search, such as for the
Tx Start Bit.
11. Push the Previous and Next Mark buttons to
navigate through the record.
12. P ush Zoom and Pan to see the areas of
interest and analyze the results.
186 MSO4000B and DPO 4000B Series Oscilloscopes User Manual
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