Tektronix 524A, 540A, 544A, TDS 520A Figure 3-1: How the Acquisition Modes Work

Acquisition Modes
Reference
Waveform
Drawn on CRT
Samples Acquired in Four
Acquisition Intervals Displayed Record Points
Acquisition
Mode
Use for fastest acquisition rate.
This is the default mode.
Use to reveal aliasing and for glitch detection.
Provides the benefits of enveloping with the
speed of a single acquisition.
Use to reduce apparent noise.
Provides the benefits of averaging
with the speed of a single acquisition.
Use to reveal variations
in the signal across time.
Use to reduce apparent noise
in a repetitive signal.
Finds highest and
lowest record points over
many acquisitions
Calculates average of all
samples in interval
Uses first sample
in interval
Calculates average value for
each record point over many
acquisitions
Peak Detect
Sample
Envelope
Interval 1 2 3 4
Uses highest and lowest
samples in two intervals
Average
Acquisition
123
Waveform
Drawn on CRT
Three Acquisitions from One Source Acquisition
Mode
Uses Peak Detect Mode for Each Acquisition
Uses Sample Mode for Each Acquisition
Hi Res
Figure 3-1: How the Acquisition Modes Work