Agilent Technologies 34420A User Manual

Using Device Clear to Halt Measurements
Device clear is an IEEE-488 low-level bus message which can be used to
halt measurements in progress. Different programming languages and
IEEE-488 interface cards provide access to this capability through their
own unique commands. The status registers, the error queue, and all
configuration states are left unchanged when a device clear message is
received. Device clear performs the following actions.
• All measurements in progress are aborted.
• The meter returns to the trigger “idle state”.
• The meter’s input and output buffers are cleared.
• The meter is prepared to accept a new command string.
• For
RS-232 operation, sending the control-C character will perform
the equivalent operations of the
IEEE-488 device clear message.
The meter’s
DTR (data terminal ready) handshake line will be true
following a device clear message. See “DTR / DSR Handshake
Protocol,” on page 179 for further details.
TALK ONLY for Printers
You can set the meter’s HP-IB address to “31” which is the talk only mode.
In this mode, the meter can output readings directly to a printer without
being addressed by a bus controller. Address 31 is not a valid address if
you are operating the meter from the
HP-IB interface with a bus
controller.
If you select the
RS-232 interface and then set the HP-IB address to the
talk only address (31), the meter will send readings over the
RS-232
interface when in the local mode.
4
Chapter 4 Remote Interface Reference
Using Device Clear to Halt Measurements
187
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Agilent Technologies 34420A Specifications

General

Brand	Agilent Technologies
Model	34420A
Category	Multimeter
Language	English

Summary

Quick Start Guide for Agilent 34420A

Prepare Agilent 34420A Meter for Use

Steps to verify and prepare the meter for initial operation, including checking supplied items and connecting power.

Agilent 34420A Input Connection Guide

Front-Panel Operation of Agilent 34420A

Agilent 34420A Front-Panel Menu Reference

Agilent 34420A Null Measurement Guide

Agilent 34420A Features and Functions

Agilent 34420A General Measurement Configuration

Details on configuring general measurement settings like input filters and integration time.

Agilent 34420A Voltage Measurement Configuration

Agilent 34420A Resistance Measurement Configuration

Agilent 34420A Remote Interface Reference

Agilent 34420A SCPI Command Summary

A summary of all SCPI commands available for programming the meter remotely.

Agilent 34420A Remote Programming Sequence

Outlines the seven-step sequence for programming the meter using remote commands.

Agilent 34420A MEASure and CONFigure Commands

Explains how to use MEASure? and CONFigure commands for setting up and performing measurements.

Agilent 34420A RS-232 Configuration

Agilent 34420A Error Messages

Agilent 34420A Execution Error Codes

Lists and explains common execution errors encountered during command string processing.

Agilent 34420A Calibration Error Codes

Agilent 34420A Measurement Tutorial

Agilent 34420A Measurement Error Analysis

Discusses common sources of measurement errors and techniques to minimize them.

Agilent 34420A Specifications

Agilent 34420A Accuracy Specifications

Detailed accuracy specifications for various functions, ranges, and conditions.

Agilent 34420A Operating Characteristics

Agilent 34420A Highest Accuracy Configuration