Chapter 4 Remote Interface Reference

Simplified Programming Overview

CONFigure

The following program segment shows how to use the READ? command

Example

with CONFigure to make an externally-triggered measurement.

 

The program configures the multimeter for dc voltage measurements.

 

CONFigure does not place the multimeter in the “wait-for-trigger” state.

 

The READ? command places the multimeter in the “wait-for-trigger”

 

state, takes a reading when the Ext Trig terminal is pulsed, and sends

 

the reading to the output buffer.

 

CONF:VOLT:DC 10, 0.003

 

TRIG:SOUR EXT

 

READ?

 

bus enter statement

CONFigure

The following program segment is similar to the program above but it

Example

uses INITiate to place the multimeter in the “wait-for-trigger” state.

 

The INITiate command places the multimeter in the “wait-for-trigger”

 

state, takes a reading when the Ext Trig terminal is pulsed, and sends

 

the reading to the multimeter’s internal memory. The FETCh? command

 

transfers the reading from internal memory to the output buffer.

 

CONF:VOLT:DC 10, 0.003

 

TRIG:SOUR EXT

 

INIT

 

FETC?

 

bus enter statement

 

Storing readings in memory using the INITiate command is faster

 

than sending readings to the output buffer using the READ? command.

 

The multimeter can store up to 512 readings in internal memory. If you

 

configure the multimeter to take more than 512 readings (using the

 

sample count and trigger count), and then send INITiate, a memory

 

error is generated.

 

After you execute an INITiate command, no further commands are

 

accepted until the measurement sequence is completed. However, if you

 

select TRIGger:SOURce BUS, the multimeter will accept the *TRG

 

command (bus trigger) or an IEEE-488Group Execute Trigger message.

116

Page 122
Image 122
Agilent Technologies 34401A manual Simplified Programming Overview CONFigure

34401A specifications

Agilent Technologies 34401A is a highly reputable digital multimeter (DMM), renowned for its accuracy, versatility, and performance in a wide range of measurement applications. First introduced in the early 1990s, the 34401A has become a staple in laboratories, manufacturing environments, and educational institutions due to its robust build and comprehensive features.

One of the standout characteristics of the 34401A is its impressive accuracy, boasting a basic DC voltage accuracy of 0.0035%, making it ideal for precise measurements in electronic testing. The multimeter offers a wide range of measurement capabilities, including voltage (DC and AC), current (DC and AC), resistance, frequency, and continuity test, making it a highly versatile tool for engineers and technicians.

The 34401A utilizes a 6½-digit resolution, enabling the user to measure small changes in electrical signals with remarkable precision. With a sampling rate of up to 1000 readings per second, it can handle dynamic test requirements, providing timely results without sacrificing measurement integrity.

In terms of connectivity, the Agilent 34401A includes a GPIB (General Purpose Interface Bus) for remote operation, allowing users to automate their testing processes and integrate the multimeter easily into larger measurement systems. This feature is particularly beneficial in automated test environments, where speed and accuracy are paramount.

Additionally, the DMM incorporates advanced measurement functions, such as statistical analysis, including mean, standard deviation, and minimum/maximum readings, which provide users with valuable insights into their data. The instrument's user-friendly interface, complete with a clear digital display and intuitive controls, enhances usability and ensures that users can easily navigate its various functions.

Robust software support further extends the capabilities of the Agilent 34401A. It is compatible with a range of software tools for data logging and analysis, enabling users to efficiently document and analyze their measurements over time.

In summary, Agilent Technologies 34401A stands out in the realm of digital multimeters due to its high accuracy, extensive measurement functionalities, and user-friendly features. Whether for research and development, quality control, or educational purposes, the 34401A remains a preferred choice for professionals demanding reliable and precise measurement solutions. Its enduring legacy in the industry speaks to its performance and reliability, making it an essential tool for anyone involved in electronic testing and measurement.