Agilent Technologies 34420A User Manual

Using the READ? Command
The READ? command changes the state of the trigger system from the
“idle” state to the “wait-for-trigger” state. Measurements will begin when
the specified trigger conditions are satisfied following the receipt of the
READ? command. Readings are sent immediately to the output buffer.
You must enter the reading data into your bus controller or the meter
will stop making measurements when the output buffer fills. Readings
are not stored in the meter’s internal memory when using the READ?
command.
Sending the READ? command is like sending the INITiate command
followed immediately by the FETCh? command, except readings are not
buffered internally.
Caution
If you send two query commands without reading the response from the
first, and then attempt to read the second response, you may receive some
data from the first response followed by the complete second response. To
avoid this, do not send a query command without reading the response.
When you cannot avoid this situation, send a device clear before sending
the second query command.
Chapter 4 Remote Interface Reference
Simplified Programming Sequence
130

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