TDS5000B Series Quick Start User Manual 101
Application Examples
This section contains ways to use your instrument in common troubleshooting tasks, procedures for using your
instrument with a Tekt ronix logic analyzer and extending the use of your instrument.
Capturing Intermittent Anomalies
One of the most difficult tasks that design engineers face is tracking down the cause of intermittent failures. If
you know what type of anomaly you are looking for, then it is easy to configure the oscilloscope’s advanced
triggering capability to isolate it. However, when you don’t know what you’re looking for, it can be exceptionally
tedious and time consuming, especially given the low waveform capture rate on traditional digital storage
oscilloscopes.
Digital Phosphor Oscilloscopes enabled by DPX technology have an exceptionally fast acquisition mode called
FastAcq that allows you to find anomalies like these in a matter of seconds or minutes, whereas a regular DSO
would take hours or days to find the same event.
Use the following procedure to capture intermittent anomalies.
1. Probe the signal of interest. (Gen-
erally this is one that you think
may be causing problems.)
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2. Push Autoset.
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3. Select Display > Display Persis-
tence > Infinite Persistence.In
this example, we are looking at a
clock signal. After observing the
signal for 1-2 minutes, but before
you look f or the problem else-
where, go to step 4.
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