Tektronix DPO70000 Series Programmer's Manual

Commands Listed in Alphabetical Order
number of sampl
es taken during the acquisition interval d etermines the number of
data values that compose the average.
AVErage speci
fies averaging m ode, in which the resulting waveform shows an
average of
SAMple data points from several separate waveform acquisitions. The
instrument processes the number of waveforms you specify into the acquired
waveform, creating a running exponential average of the input signal. The number
of waveform acquisitions that go into making up the average waveform is set or
queried using the ACQuire:NUMAVg command.
ENVelope spe cifies envelope mode, where the resulting waveform shows the
PEAKdetect range of data points from s everal separate waveform acquisitions.
The numbe
r of waveform acquisitions that go into making up the envelope
waveform is set or queried using the ACQuire:NUMENv command.
WFMDB (W
aveform Database) mode acquires and displays a waveform pixmap. A
pixmap is the accumulation of one or more acquisitions.
The ins
trument acquires data after each trigger event using Sample mode; it then
determines the pix map location of each sample point and acc umulates it with
stored data from previous acquisitions.
A Pix map is a two dimensional array. The value at each point in the array is
a counter that reflects the hit intensity. Infinite and noninfinite persist display
modes affect how pix maps are accumulated. Zoom, Math, FastAcq, FastFrame,
XY, Roll, and Interpolated Time (IT) Sampling Mode are conflicting features to
WFMDB acqMode. Turning on one of them generally turns the other one off.
Sel
ection of some standard masks (for example, eye masks, which require option
MTM) changes the acquisition mode to WFMDB.
Examples
ACQUIRE:MODE ENVE LOPE sets the acquisition mode to display a waveform that
is an envelope of many individual waveform acquisitions.
ACQUIRE:MODE? might return :ACQuire: MODe AVERAGE, indicating that
the displayed waveform is the average of the specified number of waveform
acquisitions.
ACQuire:NUMACq? (Query Only)
This query-only command returns the number of waveform acquisitions that have
occurred since starting acquisition with the ACQuire:STATE RUN command.
This value is reset to zero when any acquisition, horizontal, or vertical arguments
that affect the waveform are changed. The maximum number of acquisitions that
can be counted is 2
30
–1. The instrument stops counti
ng when this number is
reached. This is the same value that displays in the lower right of the screen.
Group
Acquisition
DPO7000, DPO70000/B and DSA7000/B Series Programmer Manual 2-77

Tektronix DPO70000 Series Specifications

General

Brand	Tektronix
Model	DPO70000 Series
Category	Test Equipment
Language	English