Chapter 3 Features and Functions

System-Related Operations

Display Control

To speed up your measurement rate, or for security reasons, you may want to turn off the front-panel display. From the remote interface, you can also display a 12-character message on the front panel.

•When the display is turned off, readings are not sent to the display and all display annunciators except ERROR and Shift are disabled. Front-panel operation is otherwise unaffected by turning off the display.

•The display state is stored in volatile memory; the display is enabled when power has been off or after a remote interface reset.

• You can display a message on the front panel by sending a

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command from the remote interface. The multimeter can display up to 12 characters of the message on the front panel; any additional characters are truncated. Commas, periods, and semicolons share a display space with the preceding character, and are not considered individual characters. When a message is displayed, readings are not sent to the display.

•Sending a message to the display from the remote interface overrides the display state; this means that you can display a message even if the display is turned off.

•Front-Panel Operation:

5:DISPLAY (SYS MENU)

The display always turns on for menu operation; this means that even when the display is turned off, you can still operate the menu.

•Remote Interface Operation:

DISPlay {OFFON}

disable/enable the display

DISPlay:TEXT <quoted string>

display the string enclosed in quotes

DISPlay:TEXT:CLEar

clear the displayed message

The following command string shows how to display a message on the front panel.

"DISP:TEXT ’HELLO’"

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Agilent Technologies 34401A Display Control, Display SYS Menu, Disable/enable the display, Clear the displayed message
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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.
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