Tektronix TDS 420A User Manual

Glossary
TDS 420A, TDS 430A, TDS 460A & TDS 510A User Manual
Glossary–3
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.
Posttrigger
The specified portion of the waveform record that contains data acquired
after the trigger event.
Pretrigger
The specified portion of the waveform record that contains data acquired
before the trigger event.
Quantizing
The process of converting an analog input that was sampled, such as a
voltage, to a digital value.
Probe compensation
Adjustment that improves the low-frequency response of a probe.
Real-time sampling
A sampling mode where the digitizing oscilloscope samples fast enough to
completely fill a waveform record from a single trigger event. Use real-time
sampling to capture single-shot or transient events.
Record length
The specified number of samples in a waveform.
Reference memory
Memory in a oscilloscope used to store waveforms or settings. You can use
that waveform data later for processing. The digitizing oscilloscope saves the
data even when the oscilloscope is turned off or unplugged.
Roll
An acquisition mode useful at slow Horizontal SCALE settings. Roll mode
allows the waveform to be viewed as it is acquired point-by-point. The
waveform appears to roll across the display.
Sample interval
The time interval between successive samples in a 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: real-time sampling and equivalent-time sampling.
Tek Secure
This feature erases all waveform and setup memory locations (setup
memories are replaced with the factory setup). Then it checks each location

Tektronix TDS 420A Specifications

General

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English