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Glossary
Absolute Value
Inserts the text FABS( into the math expression. The FABS function takes the absolute value of
the expression.
ACos
Inserts the text ACOS( into the math expression.
Acquisition Interval
The acquisition interval is the time between sample points. For mathematical purposes, it is the
time covered by the waveform record divided by the record length.
Acquisition Window
This is the window that defines what data is "cut out" of the input signal to form a waveform
record. The vertical scale and offset set the vertical size and the vertical center of this window
independently for each channel. The horizontal scale and position set the horizontal size and
positions for all channels in parallel.
Amplitude
This voltage measurement is the high value minus the low value measured over the entire
waveform or gated region.
Amplitude = High - Low
Analog Oscilloscope Sweeps
Area
Area is a voltage-over-time measurement. The measurement is the area over the entire waveform
or gated region expressed in volt-seconds. The area above the common reference point is positive
while the area below the common reference point is negative.
ASin
Inserts the text ASIN( into the math expression.
ATan
Inserts the text ATAN( into the math expression.
Auto Trigger Mode
Auto trigger mode causes the instrument to trigger if a valid trigger event does not occur within a
set amount of time. Auto trigger mode is useful when probing DC signal levels such as power
supplies or logic levels that are stuck high or low. It is also useful when looking for activities on
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