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Oscilloscope, Trigger Controls
2. Auto/Norm Auto automatically triggers a sweep if a triggering signal is not detected within
~50 ms of the end of the previous sweep in Cont triggering mode.
Norm requires a specific triggering signal before triggering can occur.
3. Controls This field selects the set of oscilloscope controls.
Choices Main
Trigger
Marker
4. Cont/Single This field specifies how measurements are armed to accept a trigger.
If Cont is selected, the oscilloscope is continuously armed to accept a sweep trigger.
If Single is selected, the oscilloscope is armed each time Reset is selected.
5. Level (div) This field sets the trigger level when the Scope Lvl is the trigger source. The
trigger level is indicated by small pointers that appear on each side of the graticule.
The units are vertical divisions.
6. Marker This field displays the signal level at the current marker position. The units-of-
measure for this field are determined by the AF Anl In selection.
See Also Keys: ON/OFF, HI LIMIT, LO LIMIT, REF SET, AVG, Units
7. Meas Reset Selecting Meas Reset will erase any accumulated measurements used for calculating
a final result, and re-start the measurement process for the following functions:
• HI LIMIT
• LO LIMIT
• AVG
See Also Keys: HI LIMIT, LO LIMIT, AVG
8. Pre-Trig This field specifies the number of horizontal divisions to be displayed previous to
the trigger point. The trigger point is indicated by small pointers that appear at the
top and bottom of the graticule.
9. Pos/Neg This field specifies whether triggering occurs on the trigger signal’s positive-going
(Pos), or negative-going (Neg) slope.