HYDRA

Service Manual

While the instrument is scanning, check that data is being stored correctly. Use an oscilloscope to monitor activity on the 7 outputs of the Byte Counter (A6U3) and the 11 outputs of the Page Register (A6U1 and A6U4). Since the repetition rate is fairly low, it may be necessary to use a storage oscilloscope to capture the activity. If either of these circuit elements is not functioning, check the Address Decode circuit (A6U2, A6U5, A6U8) for activity at the end of every scan.

If the outputs of the Page Register and the Byte Counter are showing reasonable activity, verify that these signals are also being received by the Nonvolatile Memories (A6U6 and A6U7). Check CS*, WR*, and OE* inputs on A6U6 and A6U7 for proper activity.

There may also be a problem in reading data back from the Memory PCA. After allowing the Memory PCA to fill with scan data ("F" annunciator on the display lit), turn off scanning (press SCAN). Now press the LIST button and select the "StorE" entry in the menu. While the Hydra is formatting and sending the Memory PCA contents to the RS-232 interface, again monitor the circuit areas described above for reasonable voltage levels and activity.

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Fluke 2635A, 2625A service manual Hydra
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2635A, 2625A specifications

The Fluke 2625A is a sophisticated data logger designed for a wide range of industrial and laboratory applications. This versatile instrument excels in capturing and monitoring temperature and voltage measurements with precision and reliability. One of its standout features is its ability to record data from various sensors, making it ideal for environments where comprehensive data acquisition is critical.

Equipped with a large LCD display, the Fluke 2625A provides clear and user-friendly access to real-time measurement data. Its graphical interface allows users to visualize trends and monitor readings easily, which significantly enhances usability. The device supports a variety of input types and can connect to thermocouples, RTDs, and other sensors, offering great flexibility for various measurement tasks.

The Fluke 2625A employs advanced measurement technologies that ensure accuracy in data logging. With a high sampling rate, it captures fast-changing signals while maintaining data integrity. The device features a built-in memory that allows for extensive logging, accommodating long-term monitoring tasks without requiring constant oversight. Users can set it to log data at specified intervals, offering customizable solutions for different monitoring needs.

Another significant characteristic of the Fluke 2625A is its robust communication capabilities. The device supports USB and RS-232 interfaces for easy connectivity with computers and other devices, making data transfer and analysis seamless. This feature is especially beneficial for users who need to compile or analyze large sets of data quickly.

Furthermore, the Fluke 2625A is designed with durability in mind. Its rugged construction makes it suitable for challenging environments, including those with high levels of vibration, dust, or moisture. This reliability ensures that the device can withstand the rigors of fieldwork while still delivering accurate measurements.

In summary, the Fluke 2625A is a powerful data logger that combines versatility, accuracy, and reliability. Its user-friendly interface, advanced measurement technologies, and robust design make it an essential tool for professionals in various industries, from manufacturing and HVAC to research and development. Whether monitoring temperature changes in a laboratory or assessing voltage levels in an industrial setting, the Fluke 2625A stands out as a trusted solution for effective data logging and analysis.
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