56
3000 X-Series Oscilloscopes Advanced Training Guide
3
Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs
Lab #11: Triggering on and Searching for Runt Pulses
A “runt” pulse is defined as either a positive or negative digital pulse that
fails to meet a minimum required amplitude. In this lab you will learn
how to set up the scope to trigger on runt pulse conditions. In addition,
we will be using the scope’s Search & Navigation capability to
automatically find, mark, and then navigate to runt pulses, as well as use
the scope’s segmented memory acquisition to capture multiple and
consecutive occurrences of runt conditions.
1
Connect the channel- 1 probe to the Demo 1 terminal and ground.
2
Press
[Default Setup]
on the scope’s front panel.
3
Press
[Help]
; then press the
Training Signals
softkey.
4
Using the Entry knob, select the
Runt Pulses
signal; then press the
Output
softkey to turn it on.
5
Set channel- 1 to
500 mV/div
.
6
Set channel- 1 offset/position to approximately
1.6 V
to center the
waveform on- screen.
7
Push the trigger level knob to automatically set the trigger level to
approximately
50%
.
8
Set the scope’s timebase to
100.0 ns/div
.
Figure 36 Scope display reveals various amplitude pulses while triggering on any rising
edge.