To Test Minimum And Maximum Pulse Limits - Agilent Technologies 1670G Series User Manual

Logic analyzers

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Triggering Examples

Single-Machine Trigger Examples

To test minimum and maximum pulse limits

1 Go to the timing analyzer's Trigger menu.

2 Define the Edge1 term to represent the positive-going transition,

and define the Edge2 term to represent the negative-going

transition on the line with the pulse to be tested.

You can rename these terms to POS_EDGE and NEG_EDGE.

3 Define the Timer1 term to represent the minimum pulse width,

and the Timer2 term to represent the maximum pulse width.

You can rename these terms to MIN_WID and MAX_WID. In this

example, Timer1 was set to 496 ns and Timer2 was set to 1 ms. Both

timers start when sequence level 2 is active.

4 Under Timing Sequence Levels, enter the following sequence

specification:

• Find "POS_EDGE" Occurs "1" Else on "no state" go to level "1"

• Then find "NEG_EDGE" Occurs "1" Else on "no state" go to level "2"

You will need to start both timers upon entering this second state. You

do this using the Timer Control field in the menu for sequence level 2.

• TRIGGER on "MIN_WID 496 ns + MAX_WID 1.00 ms" Occurs "1" Else on

"anystate" go to level "1"