Calibration Security (continued)

Chapter 3 Features and Functions

Calibration Overview

To Unsecure for Calibration You can unsecure the multimeter for calibration either from the front panel or remote interface. The multimeter is secured when shipped from the factory, and the security code is set to “HP034401”.

Front-Panel Operation:

1:SECURED (CAL MENU)

If the multimeter is secured, you will see the above command when you go into the CAL MENU. (If you move across the “commands” level in the menu, you will notice that the “2: CALIBRATE” command is “hidden” if the multimeter is secured.) To unsecure the multimeter, select the “parameter” level of the SECURED command, enter the security code, then press Menu Enter.

000000 CODE

When you go to the “commands” level in the CAL MENU again,

you will notice that the multimeter is unsecured. Notice also that the “2: CALIBRATE” command is no longer hidden and you can perform

acalibration.

1:UNSECURED

Remote Interface Operation:

CALibration:SECure:STATe {OFFON},<code>

To unsecure the multimeter, send the above command with the same code used to secure. For example,

"CAL:SEC:STAT OFF,HP034401"

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Agilent Technologies 34401A manual Calibration Security, Secured CAL Menu

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.