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Triggering on Waveforms
3–86
TDS 500C, TDS 600B, & TDS 700C User Manual
To Set Mode and Holdoff. Mode and holdoff can be set for all standard trigger
types and classes. To set mode and holdoff, refer to To Set Mode & Holdoff on
page 3–75. To learn more about trigger mode and holdoff, see the descriptions
Trigger Modes and Trigger Holdoff on page 3–65.
When you select the logic class Setup/Hold, the oscilloscope uses one channel as
a data channel (the factory default setting is Ch1), another channel as a clock
channel (default is Ch2), and triggers if the data transitions within the setup or
hold time of the clock. (Pages 3–77 and 3–78 describe how setup/hold triggers
work). To use setup and hold triggering, do the following procedures.
Select Setup/Hold Triggering. Press TRIGGER MENU ➞ Type (main) ➞ Logic
(pop-up) ➞ Class (main) ➞ Setup/Hold (pop-up).
Define the Data Source. To select the channel that is to contain the data signal:
1. Press TRIGGER MENU ➞ Type (main) ➞ Logic (pop-up) ➞
Class (main) ➞ Setup/Hold (pop-up) ➞ Data Source (main).
2. Press any one of Ch1, Ch2, Ch3, or Ch4 (side). Do not select the same
channel for both the data and clock sources.
Define the Clock Source and Edge. To select the channel that is to contain the
clock signal and the edge to use to clock:
1. Press TRIGGER MENU ➞ Type (main) ➞ Logic (pop-up) ➞
Class (main) ➞ Setup/Hold (pop-up) ➞ Clock Source (main) ➞ Ch1,
Ch2, Ch3, or Ch4 (side).
2. Press any one of Ch1, Ch2, Ch3, or Ch4 (side). Do not select the same
channel that you selected for the clock source.
3. Press Clock Edge (side) to toggle between the rising and falling edges.
To Trigger on Setup/
Hold Time Violations