To Detect Bus Contention - Agilent Technologies 1670G Series User Manual

To detect bus contention

In this setup, the trigger occurs only if both devices assert their bus
transfer acknowledge lines at the same time.
1 Go to the timing analyzer's Trigger menu.
2 Define the Edge1 term to represent assertion of the bus transfer
acknowledge line of one device, and Edge2 term to represent
assertion of the bus transfer acknowledge line of the other
device.
You can rename these to BTACK1 and BTACK2.
3 Under Timing Sequence Levels, enter the following sequence
specification:
• TRIGGER on "BTACK1 • BTACK2" Occurs "1" Else on "no state" go to level
"1"
Triggering on Bus Contention
Triggering Examples
Single-Machine Trigger Examples
117