Fluke 867B - Page 76

867B/863
Users Manual
5-6
Selecting the Trigger Source
K
Slope
t
Slope
[]
Internal
External Exit
4
(Internal External) selects Internal or External
trigger source. When “Internal” is selected, the
trigger circuit uses the measured input signal for
triggering. When “External” is selected, the trigger
circuit uses the signal placed on the EXT TRIG jack
for triggering. The waveform and counter trigger
icons are removed from the display and a special
trigger level indicator replaces the trigger level
readings in the upper right corner of the display
(Figure 5-3). There are 21 external trigger level
steps. You can provide a trigger from an external
source to synchronize the GMM display to some
other event. Refer to Specifications for External
trigger input levels.
5
(Exit) returns to the View Softkeys.
Selecting Single or Dual Trigger
To accommodate various trigger situations, the
waveform can be triggered by one (single) or two
(dual) trigger settings. “Single” or “Dual” are trigger
selections you can be make from the SET UP
screen. When using external triggering, only one
trigger level may be set regardless of the set up
selection.
rita0392.eps
Figure 5-3. Setting Up the Trigger