Chapter 5 Remote Interface Reference

RS-232 Interface Configuration

If your computer has a 9-pin serial port with a male connector, use the cable included with the instrument (if you ordered the internal DMM). If you need an additional cable, order the RS232-61601cable which is part of the 34398A Cable Kit. This cable has a 9-pin female connector on each end.

The cable pin diagram is shown below (this is the pinout for the cable shipped with the 34970A). For proper operation, you must use an RS-232 cable with the same pinout as shown below.

RS-232 Cable

5

RS-232 Troubleshooting

Here are a few things to check if you are having problems communicating over the RS-232 interface. If you need additional help, refer to the documentation that came with your computer.

Verify that the instrument and your computer are configured for the same baud rate, parity, and number of data bits. Make sure that your computer is set up for 1 start bit and 1 stop bit (these values are fixed on the instrument).

Verify that you have connected the correct interface cable and adapters. Even if the cable has the proper connectors for your system, the internal wiring may not be correct. You can use the 34398A Cable Kit to connect the instrument to most computers or terminals.

Verify that you have connected the interface cable to the correct serial port on your computer (COM1, COM2, etc.).

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Agilent Technologies 34970A manual RS-232 Troubleshooting

34970A specifications

Agilent Technologies 34970A is a versatile data acquisition and measurement system that has gained popularity in various industries, including research and development, manufacturing, and education. The primary purpose of the 34970A is to offer an efficient solution for data collection, monitoring, and analysis, which can significantly enhance productivity and accuracy in testing applications.

One of the main features of the 34970A is its modular design, allowing users to customize the system according to their specific measurement needs. The mainframe can accommodate up to three plug-in measurement modules, which can include various types of measurements such as analog, digital, temperature, and frequency. This modularity provides flexibility for users to tailor the system to their requirements, making it highly adaptable to different applications.

Another notable characteristic of the Agilent 34970A is its impressive channel configuration. The system can support up to 120 measurement channels when fully configured, enabling extensive data acquisition without the need for multiple devices. This capability is essential for applications requiring simultaneous monitoring of multiple parameters or locations.

The 34970A utilizes advanced signal processing technologies to ensure high-accuracy measurements. The internal 6.5-digit resolution multimeter provides precise readings, while the device also supports various input types, such as thermocouples and RTDs for temperature measurements. The ability to perform mathematical functions, such as summation and averaging, on the acquired data further enhances its usability.

For data storage and management, the Agilent 34970A features built-in memory for storing up to 20,000 readings. Users can also easily transfer data to a PC through the RS-232 interface or GPIB (IEEE 488) for further analysis and reporting. Additionally, it offers the capability to program automatic data logging and scheduling of measurements, which streamlines the testing process and reduces manual intervention.

In terms of user interface, the 34970A is equipped with a large graphical display that provides clear visualization of measurement data and easy navigation through settings and options. The menu-driven interface makes it accessible for users of all skill levels, simplifying the setup and operation of the device.

Overall, the Agilent Technologies 34970A stands out for its modularity, high channel capacity, advanced measurement technologies, and user-friendly interface. As a reliable and efficient data acquisition system, it is well-suited for a wide range of applications, making it an essential tool for engineers and technicians looking to enhance measurement precision and efficiency.