Glossary
Trigger Level
The level the trigger signal must cross to generate a trigger.
Trigger Light
A light on the 2216 front panel, labelled TRIG'D, that indicates
when the instrument has acquired a trigger.
Trigger Mode
The way in which the instrument acquires a trigger.
Trigger Slope
The parameter that determines whether the oscilloscope triggers as
the voltage of the displayed signal is rising or falling.
Trigger Source
The signal that provides the trigger event. The trigger source can he
a signal acquired through either channel or an external trigger.
Trigger Position
The location of the trigger event relative to the waveform on the
display.
Uncalibrated Channel
A channel manipulated with the variable volts-per-division (VAR
switch) control. This control allows you to scale a waveform verti
cally so that it takes up an arbitrary number of vertical divisions.
However, after this manipulation, the exact number of volts-per-
division for that signal is unknown.
Vertical Axis
The axis along which an oscilloscope measures the voltage of a sig
nal, in volts per division or fractions of a volt per division.
Vertical bar cursors
The two vertical bars you position to measure the time parameter of
a waveform record. The oscilloscope displays the value of the active
(movable) cursor with respect to trigger and the time value between
the bars.
Volt (V)
The unit of potential difference. One volt is the amount of voltage
needed to cause one ampere of current to pass through one Ohm of
resistance.
G -12
Appendix G: Glossary
Summary of Contents for 2216
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