Language Dictionary - 3

Trace Subsystem

This subsystem programs the output waveform of the ac source. Two waveform commands are available: TRACe and DATA. These commands are interchangeable; they both perform the same function.

Subsystem Syntax

TRACe DATA

 

:CATalog?

Return list of defined waveforms

[:DATA] <waveform_name>, <n> {, <n>}

Assign values to a waveform

:DEFine <waveform_name>[, <waveform_name> 1024]

Create and name new waveform

:DELete

 

[:NAME] <waveform_name>

Delete waveform to free its memory

TRACe

DATA

These commands set the values of a user-defined waveform table.

The first parameter is the name of a waveform that was previously defined with TRACe:DEFine. Following the name are 1024 data points that define the relative amplitudes of exactly one cycle of the waveform. The first data point defines the relative amplitude that will be output at 0 degrees phase reference. An error will occur if exactly 1024 data points are not sent with the command.

Data points can be in any arbitrary units. The ac source scales the data to an internal format that removes the dc component and ensures that the correct ac rms voltage is output when the waveform is selected. When queried, trace data is returned as normalized values in the range of ±1. You can query the predefined SINusoid, SQUare, or CSINusoid waveform shapes, but you cannot use the predefined names as names for your waveform.

Waveform data is stored in nonvolatile memory and is retained when input power is removed. Up to 12 user-defined waveforms may be created and stored. The *RST and *RCL commands have no effect on user-defined waveforms.

A waveform can be selected for output using the FUNCtion:SHAPe, FUNCtion:SHAPe:TRIGgered, or LIST:SHAPe commands.

Command Syntax

Parameters

Examples

Query Syntax

Returned Parameters Related Commands

TRACe[:DATA] <waveform_name>, <NRf> {,<NRf>} DATA[:DATA] <waveform_name>, <NRf> {,<NRf>} <waveform_name>, <amplitude>

TRAC flattop,0.1,0.3,0.7,.....-0.7,-0.3,-0.1

TRACe[:DATA]? <waveform_name> DATA[:DATA]? <waveform_name>

<NR3> {,<NR3>} (a total of 1024 data points)

TRAC:DATA TRAC:DEL FUNC:SHAP

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Agilent Technologies 6813B, 6834B, 6814B Trace Subsystem, TRACe, Data, Command Syntax Parameters Examples Query Syntax, 105
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