Operator Maintenance

Chapter 3 Features and Functions

This section describes how to replace the power-line and current fuses. If you need additional information about replacing parts or repairing the multimeter, see the Service Guide.

To Replace the Power-Line Fuse

The power-line fuse is located within the multimeter’s fuse-holder assembly on the rear panel (see also page 15). See the rear panel of the multimeter for the proper fuse rating. To replace the 250 mAT fuse, order Agilent part number 2110-0817.

To Replace the Current Input Fuses

The front and rear current input terminals are protected by two series fuses. The first fuse is a 3A, 250 Vac, fast-blow fuse and is located on the rear panel. To replace this fuse, order Agilent part number 2110-0780.

With a small flatblade screwdriver, push in on the fuse cap and rotate it counterclockwise. Remove the fuse cap and fuse.

A second fuse is located inside the multimeter to provide an additional level of current protection. This fuse is a 7A, 250 Vac, high-interrupt rated fuse (Agilent part number 2110-0614). To replace this fuse, you must remove the multimeter’s case by loosening three screws. See the Service Guide for more information on disassembling the multimeter.

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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.

Agilent Technologies 34401A manual Operator Maintenance, To Replace the Power-Line Fuse

Models: 34401A