Chapter 4 Features and Functions

Scanning

Scanning on Alarm In this configuration, the instrument sweeps the scan list once each time a reading crossing an alarm limit on a channel. You can also assign alarms to channels on the multifunction module.

For example, you can generate an alarm when a specific bit pattern is detected or when a specific count is reached.

Note: For complete details on configuring and using alarms, refer to “Alarm Limits” starting on page 122.

•In this scan configuration, you may use the Monitor function to continuously take readings on a selected channel and wait for an alarm on that channel. The monitored channel can be part of the scan list but you can also use a channel on the multifunction module (which does not have to be part of the scan list and you do not have to use the Monitor function). For example, you can generate an alarm on a totalizer channel which will initiate a scan when a specific count is reached.

•You can specify a scan count which sets the number of alarms that will be allowed before terminating the scan. See “Scan Count”

on page 86 for more information.

•All readings from the scan are stored in non-volatile memory. Readings accumulate in memory until the scan is terminated (until the scan count is reached or until you abort the scan).

•Mx+B scaling and alarm limits are applied to measurements during the scan and all data is stored in non-volatile memory.

•Front-Panel Operation:

SCAN ON ALARM

To enable the Monitor function select the desired channel and then

press . To initiate the scan, press . When an alarm event occurs, the scan starts and readings are stored in memory.

Note: To stop a scan, press and hold .

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Image 86
Agilent Technologies 34970A manual On page 86 for more information
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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.
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