Agilent Technologies InfiniiVision 7000A Series Programmer's Manual page 618

5
Commands by Subsystem
Table 94 :WAVeform Commands Summary (continued)
Command
n/a
n/a
n/a
n/a
n/a
n/a
Introduction to The WAVeform subsystem is used to transfer data to a controller from the
:WAVeform
oscilloscope waveform memories. The queries in this subsystem will only
Commands
operate when the channel selected by :WAVeform:SOURce is on.
Waveform Data and Preamble
The waveform record is actually contained in two portions: the preamble
and waveform data. The waveform record must be read from the
oscilloscope by the controller using two separate commands,
:WAVeform:DATA (see
The waveform data is the actual data acquired for each point in the
specified source. The preamble contains the information for interpreting
the waveform data, which includes the number of points acquired, the
format of acquired data, and the type of acquired data. The preamble also
contains the X and Y increments, origins, and references for the acquired
data, so that word and byte data can be translated to time and voltage
values.
Data Acquisition Types
There are four types of waveform acquisitions that can be selected for
analog channels with the :ACQuire:TYPE command (see
NORMal, AVERage, PEAK, and HRESolution. Digital channels are always
618
Query
:WAVeform:XINCrement?
(see page 646)
:WAVeform:XORigin?
(see page 647)
:WAVeform:XREFerence?
(see page 648)
:WAVeform:YINCrement?
(see page 649)
:WAVeform:YORigin?
(see page 650)
:WAVeform:YREFerence?
(see page 651)
page 626) and :WAVeform:PREamble (see
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide
Options and Query Returns
<return_value> ::= x-increment
in the current preamble in NR3
format
<return_value> ::= x-origin
value in the current preamble in
NR3 format
<return_value> ::= 0
(x-reference value in the current
preamble in NR1 format)
<return_value> ::= y-increment
value in the current preamble in
NR3 format
<return_value> ::= y-origin in
the current preamble in NR3
format
<return_value> ::= y-reference
value in the current preamble in
NR1 format
page 633).
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