Application Exa
mples
Troubleshooting an RS-232 B us
In this example, you are looking at analog characteristics of a digital signal in a digital circuit. You are doing this to analyze
the signal integrity of a signal. F or example, you might be testing RS-232 bus signals.
Basic Strategy
First, you w
ill display and acquire the digital signal. Then, you will look at both the analog and digital representations of the
signal. Finally, you will search through each R S-232 byte with the search/mark functions.
NOTE. Triggering on R S-232 bus signals requires use of the DPO3COMP Serial Triggering and Analysis Module. (See
page 12, Appli
cation Module Free Trial.)
1. Connect th
e desired analog probe tip to the
desired test point.
2. Push D
efault Setup.
3. Push Autoset.
4. Pus
h B1.
5. Pus
h Bus B1 on the lower menu, use
multipurpose knob a to s elect RS-232,
and enter the parameters of the bus in the
re
sulting screen menus.
MSO3000 and DPO 3000 Series Oscilloscopes User Manual 161
To Next Page
Loading...
