22 counter – Teledyne LeCroy Summit T28 PCIe Multi-lane Protocol Analyzer User Manual User Manual
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Summit T28 PCI Express Multi‐Lane Protocol Analyzer User Manual
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Counter
Teledyne LeCroy
Figure 5.41: Actions Properties Dialog
5.22 Counter
Counters can be created for any specific event or for multiple events. Counters function
similar to an event and are independent of the event, thus allowing greater flexibility. You
can select a counter for any event and if both channels are selected you can set the
counter to count upstream and downstream. Counters can be reset providing further
flexibility. The counter once set lives in the State. In an Advance to Sequence state once
the action proceeds from one sequence state to the next, the counter in the preceding
state will stop and the counter in the current state will start.
There are two Counters for the Global State and four Counters for the Sequence State.
Note:
It is an invalid configuration for some events when you try and set a counter and timer when
both channels are selected.
The counters have different colors for the Global State and Sequence State. Each color
signifies a different meaning in the Global and Sequence states (see
).
Note:
Global timers/counters can be used by events from any direction as long as the events occur
more than 380 ns apart. State timer/counters can be controlled only from one direction not
both, meaning starting, reset and incrementing must be done from events occurring in the same
direction of the selected timer/counter.