451
Chapter 14, Oscilloscope Screen
Field Descriptions
Cont/Single
This field specifies whether the oscilloscope is continuously triggered (Cont), or
if it is only triggered each time
Reset is selected (Single).
Level (div)
This control is divided into two fields:
The upper field (
0.00) sets the internal trigger level as a function of vertical
divisions. The trigger level is indicated by small pointers that appear on each side
of the screen (only used for internal triggering).
The lower field (
Pos/Neg) specifies whether triggering happens when the
waveform being measured is positive-going (
Pos), or negative-going (Neg).
Pre-Trig
This field specifies the number of horizontal divisions displayed previous to the
trigger point. It allows you to see what the signal looked like before the trigger
point.
When pre-triggering is used, the trigger point is indicated by small pointers that
appear at the top and bottom of the screen.
Reset
See the Cont/Single field description, on page 451
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