User Guide

Command Descriptions
ACQuire:MODe
Sets or queries the oscilloscope acquisition mode. This affects all live waveforms
and is equivalent to setting the Mode option in the Acquire menu.
Waveforms are the displayed data point values taken from acquisition intervals.
Each acquisition interval represents a time duration that is determined b y the
horizontal
scale (time per division).
The oscilloscope sampling system can operate at a rate greater than that indicated
by the hori
zontal scale. Therefore, an acquisition interval can include more than
one sample.
The acqui
sition mode, which you set using this
ACQuire:MODe command,
determines how the final value of the acquisition interval is generated from the
many data samples.
Group
Acquisition
Synta
x
ACQuire:MODe { SAMple | PEAKdetect | AVErage }
ACQuire:MODe?
Arguments
SAMple specifies that the displayed data point value is the fi rst sampled value
that was taken during t
he acquisition interval. The waveform data has 8 b its of
precision in all acquisition modes. You can request 16 bit data with a CURVe?
query, but the lower-order 8 bits of data will be zero.
SAMple is the default mode.
PEAKdetect specifies the display of the high-low range of the samples taken from
a single waveform a cquisition. The oscilloscope displays the high-low range as a
vertical range that extends from the highest to the lowest value sampled during the
acquisition interval. PEAKdetect mode can reveal the presence of aliasing.
AVErage specifies averaging mode, where the resulting waveform shows an
average of
SAMple data points from several separate waveform acquisitions. The
number of waveform acquisitions that go into making up the average waveform is
set or queried usi
ng the ACQuire:NUMAVg command.
Examples
ACQUIRE:MODE PEAKDETECT displays a vertical area representing the range of
the highest to l
owest value of the acquired signal.
ACQUIRE:MODE? might return SAMPLE.
2-32 TDS200, TDS1000/2000, TDS1000B/2000B, TDS2000C, TPS2000 Programmer