Tektronix TDS 520A Manual page 157

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Information
TDS 620A, 640A, & 644A User Manual
Define Logic
To choose the type of logic function you want applied to the input channels:
Press TRIGGER MENU
State (pop-up) Define Logic (main)
See Triggering , on page 2-13.
See Triggering , on page 3-142.
Type (main) Logic (pop-up)
AND, OR, NAND, or NOR (side).
Logic Triggering
Class (main)
3 85