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Compatibility & Differences: 34465A & 34410A/34411A/L4411A Digital Multimeters

Technical Overviews

Keysight Technologies

Compatibility and Differences:

34465A and 34410A/34411A/L4411A

Digital Multimeters

Technical Overview

The Keysight 34465A Truevolt digital multimeter (DMM) is the next-generation DMM for users that own the Keysight 34410A, 34411A, or L4411A. The new Truevolt DMM was designed by the same group that designed the previous generation of DMMs, with many of the same R&D engineers participating. With this continuity of experience and expertise, Keysight has made a DMM that is a virtual drop-in replacement for the 34410A or 34411A while continuing to evolve usability and measurement technology.

The 34465A is designed to be a compatible 34410A and 34411A replacement with few exceptions. If you are looking to migrate from the 34410A or 34411A to a 34465A and want to fully understand all differences between the two generations of DMM models, this application note will help you. The L4411A does not have a 1U direct replacement; however, you can achieve the same functionality and measurement capability with the Truevolt Series DMM. Our goal is to help you migrate from your current DMM to a Truevolt DMM effortlessly.

Compatibility

There are many factors when looking to replace reliable instruments such as the 34410A/34411A. Here are just some of the areas where the 34465A is equivalent with the older generation of DMMs.

  • Functions and ranges:

    The 34465A is a superset of 34410/34411A/L4411A capability. Differences are listed below.
  • Measurement accuracy and resolution:

    The 34465A’s specifications are as accurate or better with few exceptions.

    See Table 1. All specifications are ISO17025 compliant.
  • SCPI compatibility:

    We have taken extra care to ensure the 34465A will work with SCPI programs that were written for the Keysight 34410A/34411A/L4411A. Programming considerations and differences are listed below.
  • Mechanical size:

    Height, width, and depth dimensions are the same as the 34410A/34411A. There is no direct replacement for the 1U size of the L4411A.
  • Accessories:

    Rack mount kits and probe accessories are compatible with both products.
  • Manufacturing:

    Both DMMs are produced to the same rigorous quality standards and manufacturing process controls.
  • Service and support from Keysight:

    Our international team is available to help you calibrate your DMM or answer any questions about either instrument.

Differences

The few differences between the 34465A and 34410A/34411A/L4411A DMMs that might affect migration are listed below. Many of these differences improve the performance of the 34465A relative to the 34410A/34411A models.

Physical differences

  • GPIB is optional on the 34465A.
  • The L4411A is a 1U high instrument. 34465A is a 2U high instrument. Currently Keysight doesn’t offer 34465A in a 1U form factor.

Calibration Differences

The 34465A and 34410A/34411A/L4411A use different calibration procedures, with different default passwords

Key measurement differences:

  • Base specifications for the 34465A for the DC voltage and resistance functions are specified for Tcal l ± 2 °C, whereas the specifications on the 34410A and 34411A are specified for Tcal ± 5 °C. If an autocalibration is performed regularly (every 24 hours or when the temperature drifts more than 2 °C) the base specifications added with the ACAL temperature coefficient will be less than the 34410A/34411A/L4411A base specifications for the same range of temperatures. See application note 5992- 0420EN for more information about ACAL and the application of specifications.

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