RS-232 Interface Configuration

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Chapter 4 Remote Interface Reference

See also “Remote Interface Configuration,” on page 91 in chapter 3.

You connect the multimeter to the RS-232 interface using the 9-pin (DB-9) serial connector on the rear panel. The multimeter is configured as a DTE (Data Terminal Equipment) device. For all communications over the RS-232 interface, the multimeter uses two handshake lines:

DTR (Data Terminal Ready) on pin 4 and DSR (Data Set Ready) on pin 6.

The following sections contain information to help you use the multimeter over the RS-232 interface. The programming commands for RS-232 are listed on page 153.

RS-232 Configuration Overview

Configure the RS-232 interface using the parameters shown below. Use the front-panel I/O MENU to select the baud rate, parity, and number of data bits (see also pages 163 and 164 for more information).

• Baud Rate: 300, 600, 1200, 2400, 4800, or 9600 baud (factory setting)

•Parity and Data Bits: None / 8 data bits

Even / 7 data bits, (factory setting) or

Odd / 7 data bits

•Number of Start Bits: 1 bit (fixed)

•Number of Stop Bits: 2 bits (fixed)

Do not use the RS-232 interface if you have configured the multimeter to output pass/fail signals on pins 1 and 9. Internal components on the RS-232 interface circuitry may be damaged.

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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 RS-232 Interface Configuration, RS-232 Configuration Overview

Models: 34401A

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