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Delayed Triggering
Reference
The Source menu lets you select which input will be the delayed trigger
source.
7. Press Source (main) ➞ Ch1, Ch2, Ch3 (Ax1 on the TDS 524A &
TDS 620A), Ch4 (Ax2 on the TDS 524A & TDS 620A), or Auxiliary (not
available on the TDS 524A & TDS 620A) (side).
Figure 3-15: Delayed Trigger Menu
8. Press Coupling (main) ➞ DC, AC, HF Rej, LF Rej, or Noise Rej (side)
to define how the input signal will be coupled to the delayed trigger. For
descriptions of these coupling types, see
Triggering
on page 2-13.
9. Press Slope (main) to select the slope that the delayed trigger will occur
on. Choose between the rising edge and falling edge slopes.
When using Delayed Triggerable mode to acquire waveforms, two trigger
bars are displayed. One trigger bar indicates the level set by the main
trigger system; the other indicates the level set by the delayed trigger
system.
10. Press Level (main) ➞ Level, Set to TTL, Set to ECL, or Set to 50%
(side).
Level lets you enter the delayed trigger level using the general pur-
pose knob or the keypad.
Set to TTL fixes the trigger level at +1.4 V.
Set to ECL fixes the trigger level at –1.3 V.