Tektronix TDS 200-Series, User Manual

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Glossary
TDS 200-Series Digital Oscilloscope User Manual
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Ground (GND) Coupling
Coupling option that disconnects the input signal from the
vertical system.
Ground Lead
The reference lead for an oscilloscope.
Hard Copy
An electronic copy of the display in a format useable by a
printer.
Holdoff
A specified amount of time that must elapse after a trigger event
before the trigger circuit will accept another trigger event
Holdoff helps ensure a stable display.
Voltage Cursors
The two horizontal bars that you position to measure the voltage
parameters of a waveform. The oscilloscope displays the value
of each cursor with respect to ground and the voltage value
between the bars.
Menu
A set of labels shown in the display to identify the functions of
the bezel buttons. The specific menu contents depend on the
menu button you press.
Normal Trigger Mode
A mode where the oscilloscope does not acquire a waveform
record unless a valid trigger event occurs. It waits for a valid
trigger event before acquiring waveform data.
Peak Detect Mode
A mode in which the oscilloscope creates a pair of record points
during each sample interval. Each pair consists of the maximum
and minimum input voltage during the interval.
Persistence
A method of retaining old data on the display for a period of
time.