Fluke CombiScope PM3370B User Manual page 112

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.
1- D-
1-
D-
ST6729
D : DTB TRIGGER LEVEL INDICATOR
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.