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HOW TO USE THE INSTRUMENT 4 - 67
DELAYED TIMEBASE TRIGGER LEVEL
Just as is the case for Main Timebase triggering, proper triggering of the Delayed
Timebase depends on the selection of the proper trigger level.
The ∆ symbol in the Delayed Timebase trigger menu indicates the ∆ control to be
used to adjust the trigger level.
If the coupling for the vertical channel and the triggering are the same, a trigger
level indicator is visible (D-).
If you have set up for triggered operation of the Del’dTB as described in the
previous section, and the Del’dTB trace is not displayed, the trigger level needs
adjustment.
Adjust the ∆ control until the Del’dTB signal is visible.
DELAYED TIMEBASE COUPLING
The Del’dTB permits the same trigger coupling selection as for the MainTB (ac,
dc, LF-rej, HF-rej). The level indication ’D-’ (for Del’dTB) is present only when the
combination of the Del’dTB trigger coupling and the input coupling is useful.
ST6729
1-
D-
∆
1-
D-
D−: DTB TRIGGER LEVEL INDICATOR