Chapter 5 Remote Interface Reference

System-Related Commands

SYSTem:ERRor?

Query the instrument’s error queue. A record of up to 10 errors is stored in the instrument’s error queue. Errors are retrieved in first-in-first-out (FIFO) order. The first error returned is the first error that was stored.

When you have read all errors from the queue, the ERROR annunciator turns off and the errors are cleared. The error queue is cleared by the *CLS (clear status) command or when power is cycled. The errors are also cleared when you read the queue.

See chapter 6 for a complete listing of the 34970A error messages.

SYSTem:ALARm?

Read the alarm data from the alarm queue (one alarm event is read and cleared each time this command is executed). The following is an example of an alarm stored in the alarm queue (if no alarm data is in the queue, the command returns “0” for each field).

1Reading with Units (31.009 °C)

2Date (May 1, 1997)

3Time (2:39:40.058 PM)

4Channel Number

5Limit Threshold Crossed (0 = No Alarm, 1 = LO, 2 = HI)

6Alarm Number Reported (1, 2, 3, or 4)

SYSTem:VERSion?

Query the instrument to determine the present SCPI version. Returns a string in the form “YYYY.V”, where “YYYY” represents the year of the version, and “V” represents a version number for that year (e.g., 1994.0).

*TST?

Perform a complete self-test of the instrument. Returns “+0” if the self-test is successful, or “+1” if the test fails.

268

Page 270
Image 270
Agilent Technologies manual SYSTemERRor?, See for a complete listing of the 34970A error messages, SYSTemVERSion?

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.