Appendices

F

Memory Card File Formats

For a data file, any scan data would immediately follow the configuration information. Note that it is very possible to have no scan data if the data file is created but scanning is never done.

Measurements are stored in scan records of variable size. The contents of each record is as follows:

Offset Description

================

0Time BCD hours. See TIME_DATE?

1Time BCD minutes.

2Time BCD seconds.

3Date BCD month.

4Date BCD day.

5Date BCD year.

6Alarm output values. See ALARM_DO_LEVELS?

7Digital Input/Output values. See DIO_LEVELS?

8-11 Totalizer value, 4-byte single precision floating point. 12-on Measurement values, from 1 to 21 4-byte single precision

floating-point numbers.

The number of floating point values per scan is the number of non-off channels in the channel configuration data. The number of scans per file varies from zero to tens of thousands, but will always be an integral number (there will be no partial scans).

Example

The following as an example of how the configuration and scan data can be interpreted using the C programming language. The C code shown here can be incorporated into a C program and used to access the information contained in Hydra Data Bucket data files. These examples can not, however be compiled and used as they are. They are not meant to be complete C programs.

This first part of the example creates a structure named ‘hydra’ that will hold the configuration information read from the data file.

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Fluke 2635A user manual Memory Card File Formats
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2635A specifications

The Fluke 2635A is a highly advanced multichannel data acquisition system designed for engineers and technicians requiring precision and versatility in their measurement tasks. This instrument excels in monitoring and capturing data from various sources, making it a valuable tool in laboratories, production environments, and field applications.

One of the standout features of the Fluke 2635A is its ability to support up to 20 measurement channels. Users can simultaneously monitor multiple signals, which is crucial for complex testing scenarios where numerous variables need to be tracked. The device is equipped with a 6.5-digit precision measurement capability that ensures high accuracy and resolution in readings. This level of precision is particularly beneficial in applications such as environmental monitoring, research and development, and industrial process control.

The unit incorporates a variety of measurement modes, including voltage, current, temperature, and resistance, making it exceptionally versatile. The Fluke 2635A not only handles standard signals but also integrates with various transducers, providing extensive compatibility for users engaged in diverse testing applications.

To enhance data management, the Fluke 2635A offers advanced data logging capabilities. Data can be stored internally or transferred to external devices for further analysis. The internal memory can accommodate extensive datasets, which can be crucial in long-term monitoring tasks. Integration with external software enables users to analyze and visualize data effectively, allowing for informed decision-making based on comprehensive results.

The user interface is designed for ease of use, featuring a large, bright LCD display that clearly presents measurements and status information. The device is also equipped with a simple navigation system, allowing users to switch between channels and measurement types without hassle.

In terms of construction, the Fluke 2635A is built to withstand rigorous environments. It features a robust design that ensures reliability and durability, making it suitable for both laboratory settings and field operations. Furthermore, the device supports a wide temperature range, thus enabling usage in diverse conditions.

Overall, the Fluke 2635A is a powerful and flexible instrument that provides precise measurements across multiple channels, supporting a wide range of applications. Its advanced technology, combined with user-friendly features, makes it an essential tool for professionals in various fields. The combination of accuracy, flexibility, and durability solidifies its standing as a trusted choice for data acquisition and monitoring tasks.
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