Keysight Technologies J-BERT M8020A User Manual

Keysight M8070A Programming Guide 91
SCPI Command Language 4
Query Responses
It is possible to interrogate the individual settings and status of a device
using query commands. Retrieving data is a two-stage operation.
The query command is sent from the controller using the OUTPUT
statement and the data is read from the device using the ENTER
statement. A typical example is the SCPI IEEE 488.2 Common Command
*IDN? which queries the identity of a device.
Command Separators
The SCPI command structure is hierarchical and is governed by commas,
semicolons and colons:
• Commas are used to separate parameters in one command.
• Colons are used to separate levels.
• Semicolons are used to send more than one command to the
instrument at a time.
It is possible to send several commands in one pass, as long as the
commands all belong to the same node in the SCPI tree. The commands
have to be separated by semicolons.
The following SCPI commands provide examples of this.
SOURce:VOLTage:OFFSet ‘M2.DataOut2’,-0.99
SOURce:VOLTage:AMPLitude ‘M2.DataOut2’,1.11
These commands can also be sent as follows:
VOLT:OFFS ‘M2.DataOut2’,-0.99; ‘M2.DataOut2’,AMPL 1.11
NOTE
When sending strings to the instrument, either the double quote (") or
the single quote may be used ('), the latter being more suited to PASCAL
programs, which make use of a single quote; the former being more
suited to use in BASIC programs, which use a double quote as a
delimiter.

Keysight Technologies J-BERT M8020A Specifications

General

Brand	Keysight Technologies
Model	J-BERT M8020A
Category	Control Unit
Language	English

Summary

Keysight M8000 Series of BER Test Solutions

Safety Summary

Covers general safety precautions, environment conditions, and handling instructions for instrument operation.

1 Programming Basics

Modular Configuration

Discusses the modular configuration of instruments for remote programming.

Using Identifiers

Explains the use of Location, Group Name, and Measurement Name identifiers.

2 Recommended Programming Techniques

Output Protection

Covers pattern generator output termination and protection algorithm.

Controlling the Output Levels

Explains how to set output levels using parameters like Vhigh, Vlow, Vamptl, Voffs.

Allowing the M8020A/M8030A/M8040A to Settle

Explains how instruments react to pattern changes and the time needed to settle.

Reading the M8020A/M8030A/M8040A’s Status

Working with Patterns

Creating Pattern Sequences

3 Programming Examples

Initializing the Connection

Shows how to initialize the connection to the instrument using the ResourceName.

SJ Example

PJ Example

Sampling Point Alignment Example

BER Example

M8070A Jitter Tolerance Measurement CSV Output

4 SCPI Command Language

SCPI Command Language - Introduction

Explains SCPI as the universal programming language for instrument control.

Important Points about SCPI

Covers key areas for SCPI usage: Instrument Model, Command Syntax, and Sending Commands.

Sending Commands to the M8020A/M8030A/M8040A

Details how to send commands, including an overview and using VISA.

Command Line Arguments

Communication

5 SCPI Command Reference

Subsystems

Divides SCPI commands into subsystems reflecting instrument functionality.

IEEE Commands - Reference

SCPI Standard Commands

STATus Subsystem

TRIGger Subsystem

Source Subsystem

OUTPut Subsystem

INPut Subsystem

PLUGin Subsystem

Describes the plugin interface for integrating C# assemblies.

SYSTem Subsystem

DATA Subsystem