
Glossary
TDS 310, TDS 320 & TDS 350 Instruction Manual
G3
High
The value used as 100% in automated measurements (whenever the
oscilloscope needs high ref, mid ref, and low ref values, as in fall time and
rise time measurements). May be calculated using either the min/max or
the histogram method. With the min/max method (most useful for general
waveforms), it is the maximum value found. With the histogram method
(most useful for pulses), it refers to the most common value found above
the mid point.
Holdoff, Trigger
A specified amount of time after a trigger signal that elapses before the
trigger circuit will accept another trigger signal. This helps ensure a stable
display.
Horizontal Bar Cursors
The two horizontal bars that you position to measure the voltage parame
ters of a waveform. The oscilloscope displays the value of the active
(moveable) cursor with respect to ground and the voltage value between
the bars.
Low
The value used as 0% in automated measurements (whenever the oscil
loscope needs high ref, mid ref, and low ref values, as in fall time and rise
time measurements). May be calculated using either the min/max or the
histogram method. With the min/max method (most useful for general
waveforms), it is the minimum value found. With the histogram method
(most useful for pulses), it refers to the most common value found below
the mid point.
Main Menu
A group of related controls for a major oscilloscope function that the
oscilloscope displays across the bottom of the screen.
Main Menu Buttons
Bezel buttons under the main menu display. They allow you to select
itemsin the main menu.
Maximum
Amplitude (voltage) measurement of the maximum amplitude. Typically
the most positive peak voltage.
Mean
Amplitude (voltage) measurement of the arithmetic mean over the entire
waveform.
Minimum
Amplitude (voltage) measurement of the minimum amplitude. Typically
the most negative peak voltage.
Negative Duty Cycle
A timing measurement representing the ratio of the negative pulse width
to the signal period, expressed as a percentage.