2.9 Acquiring Signals system
Showing as the follow picture，the ACQUIRE button for Acquiring Signals system
is at the menu.
Table 2-29 The Function manual of Acquiring Signals:
Option
Setting
Introduction
Acquisition
Sampling
Use for sampling and accurately display most
of the waveform.
Peak Check
Detect the noise and decrease the possibility
of aliasing.
Average
Use to reduce random or uncorrelated noise
in the signal display.
Averages〔4, 16,
32,64,128,256〕
Select number of averages.
Sinx/x
On
Off
Use sin interpolation
Use linear interpolation
Mode
Equ time
Real time
Set the Sampling mode to Equ time.
Set the Sampling mode to Real time.
Sa Rate
Display system sampling rate.
When you acquire a signal, the oscilloscope converts it into a digital form and
displays a waveform. The acquisition mode defines how the signal is digitized and
the time base setting affects the time span and level of detail in the acquisition.
Advantage: You can use this mode to reduce random noise.
Disadvantage: This mode does not acquire rapid variations in the signal that may
occur between samples. This can result in aliasing may cause narrow pulses to be
missed. In these cases, you should use the Peak Detect mode to acquire data.
■ Peak Detect: Peak Detect mode capture the maximum and minimum values
of a signal Finds highest and lowest record points over many acquisitions.
Advantage: In this way, the oscilloscope can acquire and display narrow pulses,
which may have otherwise been missed in Sample mode.
Disadvantage: Noise will appear to be higher in this mode.
ACQUIRE Button
■ Sampling: In this acquisition mode, the oscilloscope samples the signal in
evenly spaced intervals to construct the waveform. This mode accurately represents
signals most of the time.
48
Digital
S
torage
O
scilloscope
Digital Storage Oscilloscope
49
