HP 16500A User Manual download pdf (Page 91)

Traditional timing samples and stores data at regular intervals.

Transitional timing samples data at regular intervals but stores a sample

only when there has been a transition on one or more of the channels. This

makes it possible for Transitional timing to store more information in the

same amount of memory.

Glitch Acquisition Mode. A glitch is defined as any transition that

crosses the logic threshold more than once between samples. It can be

caused by capacitive coupling between traces, power supply ripple, or a

number of other events. The glitch, in turn, can cause major problems in

your system.

Your logic analyzer has the capability of triggering on a glitch and

capturing all the data that occurred before it. The glitch must have a width

of at least 5 ns at threshold in order for the analyzer to detect it.

If you want your timing analyzer to trigger on a glitch in the data, set

the Acquisition mode to Glitch. This causes several changes in the

analyzer. One change is that a field for glitch detection in each label is

added to the Timing Trace Specification menu, as shown:

Figure 5-33. Glitch Specification Field

HP 16510B Menus

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HP 16500A User Manual Page 91