Glossary
TDS 310, TDS 320 & TDS 350 Instruction Manual
G5
Roll
An acquisition mode useful at slow horizontal scale settings. Roll mode
allows you to view the waveform as it is acquired point by point. The
waveform appears to roll across the display.
Sample Acquisition Mode
The oscilloscope creates a record point by saving the first sample during
each acquisitioninterval. This is the default mode of the acquisition
system.
Sample Interval
The time interval betweensuccessive samples ina time base. For real
time digitizers, the sample interval is the reciprocal of the sample rate. For
equivalent time digitizers, the time interval between successive samples
represents equivalent time, not real time.
Sampling
The process of capturing an analog input, such as a voltage, at a discrete
point in time and holding it constant so that it can be quantized. Two
general methods of sampling are: realtime sampling and equivalent time
sampling.
Selected Waveform
The waveform on which all measurements are performed, and which is
affected by vertical position and scale adjustments. The light next to one
of the channel selector buttons indicates the current selected waveform.
Side Menu
Menu that appears to the right of the display. These selections expand on
main menu selections.
Side Menu Buttons
Bezel buttons to the right of the side menu display. They allow you to
select items inthe side menu.
Signal Path Compensation (SPC)
The ability of the oscilloscope to minimize the electrical offsets in the
vertical, horizontal, and trigger amplifiers caused by ambient temperature
changes and component aging. You should run SPC at the following
times: whenthe ambient temperature varies more than5_ C from the last
SPC, when using settings equal to or less than 5 mV per division, and
when performing critical measurements.
TekSecure
This feature erases all waveform and setup memory locations (setup
memories are replaced with the factory setup). Thenit checks each
locationto verify erasure. This feature is useful where the oscilloscope is
used to gather security sensitive data.
Time base
The set of parameters that let you define the time and horizontal axis
attributes of a waveform record. The time base determines when and how
long to acquire record points.
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