Tektronix TDS 684A, TDS 744A, TDS 784A To Trigger on Setup/ Hold Time Violations

Triggering on Waveforms
3–68 TDS 684A, TDS 744A, & TDS 784A User Manual
2. Choose either High (H), Low (L), or Don’t Care (X) (side) for the first three
channels. The choices for Ch4 are rising edge and falling edge.
Set Thresholds. To set the logic threshold for each channel:
1. Press TRIGGER MENU ➞ Type (main) ➞ Logic (pop-up) ➞
Class (main) ➞ State (pop-up) ➞ Set Thresholds (main) ➞ Ch1, Ch2,
Ch3, or Ch4 (side).
2. Use the MAIN TRIGGER LEVEL knob, the general purpose knob, or the
keypad to set each threshold.
Define Logic. To choose the type of logic function you want applied to the input
channels:
Press TRIGGER MENU ➞ Type (main) ➞ Logic (pop-up) ➞ Class (main) ➞
State (pop-up) ➞ Define Logic (main) ➞ AND, OR, NAND, or NOR (side).
Set Trigger When. To choose to trigger when the logic condition is met (Goes
TRUE) or when the logic condition is not met (Goes FALSE):
Press TRIGGER MENU ➞ Type (main) ➞ Logic (pop-up) ➞ Class (main) ➞
State (pop-up) ➞ Trigger When (main) ➞ Goes TRUE or Goes FALSE (side).
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 3–59. To learn more about trigger mode and holdoff, see the descriptions
Trigger Modes and Trigger Holdoff on page 3–51.
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 3–61 and 3–62 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.
To Trigger on Setup/
Hold Time Violations