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Agilent Technologies Model A.08.xx manual Using the Service Request SRQ Method

Models: Model A.08.xx

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Status Registers

Use Status Registers to Determine the State of Analyzer Events and Conditions

Use the SRQ method when either:

—you need time-critical notification of changes

—you are monitoring more than one device which supports SRQs

—you need to have the controller do something else while the analyzer is making a measurement

—you can’t afford the performance penalty inherent to polling

Using the Service Request (SRQ) Method

Your language, bus, and programming environment must be able to support SRQ interrupts (for example, using C and C++ with the GPIB). When you monitor a condition with the SRQ method, you must establish the following parameters:

1.Determine which bit monitors the condition.

2.Determine how that bit reports to the request service (RQS) bit of the status byte.

3.Send GPIB commands to enable the bits that monitor the condition and to enable the summary bits that report the condition to the RQS bit.

4.Enable the controller to respond to service requests.

When the condition changes, the analyzer sets the RQS bit and the GPIB SRQ line. The controller is informed of the change as soon as it occurs. The time the controller would otherwise have used to monitor the condition can now be used to perform other tasks. Your program also determines how the controller responds to the SRQ.

Generating a Service Request

Before using the SRQ method of generating a service request, first become familiar with how service requests are generated. Bit 6 of the status byte register is the request service summary (RQS) bit. The RQS bit is set whenever there is a change in the register bit that it has been configured to monitor. The RQS bit will remain set until the condition that caused it is cleared. It can be queried without erasing the contents using the *STB? command. Configure the RQS function using the *SRE command.

When a register set causes a summary bit in the status byte to change from 0 to 1, the analyzer can initiate the service request (SRQ) process. However, the process is only initiated if both of the following conditions are true:

•The corresponding bit of the service request enable register is also set to 1.

•The analyzer does not have a service request pending. (A service request is considered to be pending between the time the analyzer SRQ process is initiated, and the time the controller reads the status byte register.)

The SRQ process sets the GPIB SRQ line true. It also sets the status byte request service (RQS) bit to 1. Both actions are necessary to inform the controller that the analyzer requires service. Setting the SRQ line only informs the controller that some device on the bus requires service. Setting the RQS bit allows the controller to determine which device requires service.

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Agilent Technologies Model A.08.xx manual Using the Service Request SRQ Method, Generating a Service Request
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Model A.08.xx specifications

Agilent Technologies has long been a leader in the field of measurement and analytical instrumentation, and their Model A.08.xx is a prime example of this expertise. This advanced instrument is designed for a wide array of applications, spanning from life sciences to chemical analysis, offering unparalleled precision and reliability to meet the demands of laboratory environments.

One of the main features of the A.08.xx model is its advanced measurement capabilities. The instrument boasts a high-resolution detector that provides exceptional sensitivity, allowing researchers to detect even trace levels of analytes in complex samples. The enhanced signal-to-noise ratio is particularly beneficial for users working with low concentrations, ensuring accurate results without the need for laborious sample preparation.

The A.08.xx is equipped with state-of-the-art technologies that significantly enhance its performance. One such technology is its multi-wavelength detection system, which allows simultaneous analysis of multiple compounds within a single run. This not only boosts efficiency but also reduces the time required for method development and validation. Additionally, the model utilizes sophisticated software for data analysis, providing users with intuitive tools to interpret results quickly and effectively.

Another characteristic of the A.08.xx is its robust build quality and user-friendly interface. Designed for rigorous laboratory use, the instrument can withstand the demanding conditions of a busy research environment. Its intuitive touchscreen display simplifies operations, allowing users to set up experiments and navigate through various functions with ease. This user-centric design reduces the learning curve for new operators, enhancing productivity in the lab.

The A.08.xx also incorporates connectivity features that align with modern laboratory needs. With options for remote monitoring and data sharing, researchers can easily collaborate and access results in real-time, streamlining workflows and promoting innovation.

In conclusion, Agilent Technologies’ Model A.08.xx is not just an analytical instrument; it is a comprehensive solution for researchers and scientists seeking reliability and performance in their analytical work. With its advanced measurement capabilities, cutting-edge technologies, and user-friendly design, it continues to set the standard for excellence in laboratory instrumentation, facilitating groundbreaking research across various scientific fields.