Glossary
TDS 500D, TDS 600B, & TDS 700D User Manual
Glossary–9
Oscilloscope
An instrument for making a graph of two factors. These are typically voltage
versus time.
Peak Detect acquisition mode
A mode in which the oscilloscope saves the minimum and maximum
samples over two adjacent acquisition intervals. For many glitch-free signals,
that mode is indistinguishable from the sample mode. (Peak detect mode works
with real-time, non-interpolation sampling only.)
Peak-to-Peak
Amplitude (voltage) measurement of the absolute difference between the
maximum and minimum amplitude.
Period
A timing measurement of the time covered by one complete signal cycle. It
is the reciprocal of frequency and is measured in seconds.
Phase
A timing measurement between two waveforms of the amount one leads or
lags the other in time. Phase is expressed in degrees, where 360 comprise
one complete cycle of one of the waveforms. Waveforms measured should be
of the same frequency or one waveform should be a harmonic of the other.
Pixel
A visible point on the display. The oscilloscope display is 640 pixels wide
by 480 pixels high.
Pop-up Menu
A sub-menu of a main menu. Pop-up menus temporarily occupy part of the
waveform display area and are used to present additional choices associated
with the main menu selection. You can cycle through the options in a pop-up
menu by repeatedly pressing the main menu button underneath the pop-up.
Positive duty cycle
A timing measurement of the ratio of the positive pulse width to the signal
period, expressed as a percentage.
Positive overshoot
Amplitude (voltage) measurement.
PositiveOvershoot +
Max * High
Amplitude
100%
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