MS-500 Mixed Signal Oscilloscope Option
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ISSUED: June, 2009
MS-500-OM-E Rev C
DIGITAL TRIGGER SETUP
Overview
While the MS-500 Mixed Signal Oscilloscope option has a very powerful and flexible Digital
trigger, it is also very easy to set up basic triggering. Connecting the MS-500 to your circuit is
described in the preceding chapters and is a digital triggering requirement.
When the MS-500 option is loaded onto the oscilloscope, additional trigger capabilities are added
to the normal oscilloscope trigger. These new trigger capabilities permit you to select digital lines
as the sources for your oscilloscope triggers such as Edge, Width, Glitch, Interval and Dropout.
Other triggers can work as combination triggers incorporating analog and digital triggering
capabilities. These triggers are Qualified (A-B Event Trigger) and Logic Pattern Trigger.
Creating a Pattern Trigger
There are two different ways to trigger digitally as follows:
Logic
– permits creation of a simple or complex
analog/digital cross-pattern trigger condition with
a mix of 0, 1, rising edge, falling edge, either
edge, or don’t care conditions on up to 4 analog
channels and 18 digital lines.
Logic Bus
– permits creation of a digital trigger
that corresponds to a hexadecimal bus value for
up to 18 digital bits.
Filter Out Unstable Conditions
– Use this filter to ignore short glitches in logic state triggers that
last less than 3.5ns. If the box is unchecked all logic states are shown. This filter is enabled by
default
