curve ¶

The curve commands module.

These commands are used in the following models: DPO2K, DPO2KB, DPO4K, DPO4KB, DPO5K, DPO5KB, DPO70KC, DPO70KD, DPO70KDX, DPO70KSX, DPO7K, DPO7KC, DSA70KC, DSA70KD, MDO3, MDO3K, MDO4K, MDO4KB, MDO4KC, MSO2K, MSO2KB, MSO4K, MSO4KB, MSO5K, MSO5KB, MSO70KC, MSO70KDX

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Commands and Queries

- CURVe {<Block>|<asc curve>}
- CURVe?

Curve ¶

Bases: SCPICmdWrite, SCPICmdRead

The CURVe command.

Description

The CURVe command transfers the waveform data points the oscilloscope’s internal reference memory location (REF1-4), which is specified by the to DATa:DESTination command. The CURVe? query transfers data the oscilloscope; the source waveform is specified by the from DATa:SOUrce command. The first and last data points are specified by the DATa:STARt and DATa:STOP commands. Associated with each waveform transferred using the CURVe command or query is a waveform preamble that provides the data format, scale and associated information needed to interpret the waveform data points. The preamble information for waveforms sent the oscilloscope is specified using the to WFMInpre commands. The preamble information for waveforms transferred the oscilloscope is specified or queried using the from WFMOutpre commands. If the waveform is not displayed, the query form generates an error. The CURVe command and CURVe? query transfer waveform data in ASCII or binary format. ASCII data is sent as a comma-separated list of decimal values. Binary data is sent with the IEEE488.2 binary block header immediately followed by the binary data. The IEEE488.2 binary block header is defined as follows: #N where: N is a single decimal or hexadecimal digit indicating the number of digits to follow. are the decimal digits representing the number of bytes in the data that immediately follows this binary block header. The Waveform Transfer command group text contains more comprehensive information.

Usage

Using the .query() method will send the CURVe? query.
Using the .verify(value) method will send the CURVe? query and raise an AssertionError if the returned value does not match value.
Using the .write(value) method will send the CURVe value command.

SCPI Syntax

- CURVe {<Block>|<asc curve>}
- CURVe?

Info

<Block> is the waveform data in binary format. The waveform is formatted as follows.
<asc curve> is the waveform data in ASCII format. The format for ASCII data is [,..], where each represents a data point. For RF frequency domain waveforms, the data is transmitted as 4-byte floating point values (NR2 or NR3).