Using a multi-state sequences, Figure 12.36 example 4: complete rule – Teledyne LeCroy UWBTracer User Manual User Manual
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UWBTracer/Trainer User Manual
Chapter 12: Recording Options
LeCroy Corporation
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Step 4 From the Action pop-up menu, select the Filter In option.
Recording is now set to only record frames with MPI errors (Figure 12.36).
Figure 12.36 Example 4: Complete Rule
Using a Multi-State Sequences
Multi-state sequences allow you to create conditions that branch down to successive
states or loop back to the beginning of the sequence. They are more complex than
single-state sequences but very powerful.
Example 5: Creating a Looping Sequence
Following is a typical example of a multi-state sequence. In this example, the analyzer
waits for a WUSB Data packet (first state). When it detects a Data packet, the analyzer
waits for a corresponding ACK packet and starts a timer (second state).
If an ACK is received before the timer expires, the sequence restarts. If an ACK is not
received before the timer expires, recording is triggered.
Step 1 Click the New Event button. From the drop-down menu, select WUSB
PID > DATA to create a Data button in the Available Events area.
Step 2 Drag-and-drop the Data button into the first cell in the Main Display area.