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Agilent Technologies E3631A User Manual

Agilent Technologies E3631A
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Chapter 4 Remote Interface Reference
An Introduction to the SCPI Language
104
An Introduction to the SCPI Language
SCPI (Standard Commands for Programmable Instruments) is an ASCII-based
instrument command language designed for test and measurement instruments. Refer
toSimplified Programming Overview”, starting on page 70 for an introduction to
the basic techniques used to program the power supply over the remote interface.
SCPI commands are based on a hierarchical structure, also known as a tree system.
In this system, associated commands are grouped together under a common node or
root, thus forming subsystems. A portion of the SOURce subsystem is shown below
to illustrate the tree system.
[SOURce:]
CURRent {
<current>|MIN|MAX}
CURRent? [MIN|MAX]
CURRent:
TRIGgered {
<current>|MIN|MAX}
TRIGgered?{MIN|MAX}
VOLTage {
<voltage>|MIN|MAX}
VOLTage? [MIN|MAX]
VOLTage:
TRIGgered {
<voltage>|MIN|MAX}
TRIGgered? {MIN|MAX}
SOURce is the root keyword of the command, CURRent and VOLTage are second-
level keywords, and TRIGgered is third-level keywords. A colon (:) separates a
command keyword from a lower-level keyword.

Table of Contents

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Questions and Answers:

Agilent Technologies E3631A Specifications

General IconGeneral
BrandAgilent Technologies
ModelE3631A
CategoryPower Supply
LanguageEnglish

Summary

The Front Panel at a Glance

Front-Panel Voltage and Current Limit Settings

Display Annunciators

The Rear Panel at a Glance

Environmental Conditions

Declaration of Conformity

Chapter 1 General Information

Safety Considerations

Covers safety and EMC requirements for the instrument.

Options and Accessories

Lists available options and accessories for the power supply.

Description of Agilent E3631A

Provides a detailed overview of the power supply's features and functionality.

Installation and Setup

Details initial inspection, cooling, location, and rack mounting procedures.

Input Power Requirements

Explains AC input voltage selection and power-line cord requirements.

Chapter 2 Initial Operation

Preliminary Checkout

Steps to verify the power supply is ready for use before initial operation.

Power-On and Output Checkout

Procedures for checking power-on self-test and basic output functions.

Chapter 3 Front-Panel Operation

Front-Panel Operation Overview

Introduces front-panel keys and modes for operating the power supply.

Output Operation Modes

Details constant voltage, constant current, and tracking output operations.

Storing and Recalling Operating States

Explains how to save and retrieve instrument configurations.

Output Control and System Operations

Covers disabling outputs, knob locking, self-tests, error conditions, and display control.

Remote Interface Configuration

Guides on selecting interfaces, setting GPIB addresses, and RS-232 parameters.

GPIB and RS-232 Interface Configuration

Details GPIB setup, RS-232 setup, connection, and troubleshooting.

Calibration Overview

Provides an overview of calibration security, code changes, count, and message features.

Chapter 4 Remote Interface Reference

SCPI Command Summary

Summarizes available SCPI commands for programming the power supply.

Simplified Programming Overview

Introduces basic programming methods using APPLy, low-level commands, output control, and triggering.

Output Setting and Operation Commands

Details commands for selecting, setting, and operating outputs.

Triggering Commands

Explains how to select trigger sources and manage triggering operations.

System-Related Commands

Covers commands for display control, beeper, errors, version, and reset.

Calibration Commands

Details SCPI commands for managing calibration security, current, voltage, and string data.

RS-232 Interface Commands

Lists commands specific to RS-232 communication with the power supply.

The SCPI Status Registers

Details event, enable, summary, questionable, standard, and byte registers and their usage.

Status Reporting Commands

Covers commands for querying system errors and status registers.

An Introduction to the SCPI Language

Explains SCPI language basics, command format, separators, and parameter types.

Interface Management and Conformance

Covers halting outputs, SCPI conformance, and IEEE-488 conformance.

Device Specific Commands

Lists commands specific to the Agilent E3631A, not in the SCPI standard.

Chapter 5 Error Messages

Execution Errors

Lists and explains execution errors related to command syntax and parameters.

Self-Test and Calibration Errors

Details error codes for self-tests and calibration failures.

Chapter 6 Application Programs

Programming Examples Overview

Introduces example programs in BASIC and C/QuickBASIC for GPIB and RS-232.

Using APPLy and Low-Level Commands

Demonstrates setting outputs and using commands via APPLy and low-level SCPI.

Using Status Registers and RS-232 Operation

Shows using status registers for interrupts and RS-232 communication examples.

Chapter 7 Tutorial

Overview of Agilent E3631A Operation

Explains the basic design and operation of series regulated power supplies.

Output Characteristics and Load Considerations

Describes output modes, unregulated states, unwanted signals, and load connection factors.

Extending the Voltage and Remote Programming

Covers series connections for higher voltage and factors affecting remote programming speed.

Reliability and Cooling

Discusses component reliability, internal heat, and cooling requirements for the power supply.

Chapter 8 Specifications

Performance Specifications

Lists warranted performance parameters like output ratings, accuracy, and ripple.

Supplemental Characteristics

Details non-warranted characteristics such as temperature, stability, speed, dimensions, and cooling.

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