HP (Hewlett-Packard) 16501A LOGIC Manuale Utente

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To find the nth assertion of a chip select line
1
Select the timing analyzer Trigger menu.
2
Define the glitch/edge1 term to represent the asserting transition on
the chip select line. 
You can rename the Edge1 term to make it correspond more closely to the
problem domain, for example, to CHIP_SEL.
3
Under Timing Sequence Levels, enter the following sequence
specification:
TRIGGER on “CHIP_SEL” 10 times 
Triggering on the 10th Assertion of a Chip Select Line
Triggering
To find the nth assertion of a chip select line
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