2620A, 2625A

Users Manual

Digital Output Test

1.Ensure that communication parameters (i.e., transmission mode, baud rate, parity, and echo mode) on the Hydra Series II and the host are properly configured to send and receive serial data. Refer to Chapter 4.

2.Switch OFF power to the instrument and disconnect all high voltage inputs.

3.Remove the Digital I/O ten terminal connector from the rear of the instrument and all external connections to it. Connect short wires (to be used as test leads) to the ground (J) and 0 through 7 terminals. Leave the other wire ends unconnected at this time. Reinstall the connector.

4.Switch power ON to both Hydra Series II and the host. Verify that Hydra Series II is not scanning. If Hydra Series II is scanning, press SCAN to turn scanning off, then cycle power off-on again.

5.Using a digital multimeter (DMM), verify that all digital outputs (0-7) are in the OFF or HIGH state. This is done by connecting the low or common of the multimeter to the ground test lead and the high of the multimeter to the digital output and verifying a voltage greater than +3.8V dc.

6.Using either a terminal or a computer running a terminal emulation program, set up Hydra Series II to turn Digital Outputs ON (LOW state). In sequence send the following commands to Hydra Series II and measure that the correct Digital Output line transitioned LOW measures less than +0.8V dc.

DO_LEVEL 0,0 <CR>

Assure output 0 measures a LOW state. DO_LEVEL 1,0 <CR>

Assure output 1 measures a LOW state. DO_LEVEL 2,0 <CR>

Assure output 2 measures a LOW state. Repeat the command for all eight outputs.

7.Set up Hydra Series II to turn Digital Outputs OFF (HIGH state).

In sequence send the following commands to Hydra Series II and measure that the correct Digital Output line transitioned HIGH measures greater than +3.8V dc.

DO_LEVEL 0,1 <CR>

Assure output 0 measures a HIGH state. DO_LEVEL 1,1 <<CR>>

Assure output 1 measures a HIGH state. Repeat the command for all eight outputs.

Digital Input Test

1.Perform the DIGITAL OUTPUT TEST steps 1 through 5.

2.Using either a terminal or a computer running a terminal emulation program, set up Hydra Series II to read the Digital Input lines.

Send the following command to Hydra Series II: DIO_LEVELS? <CR>

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Fluke 2625A, 2620A user manual Digital Output Test, Digital Input Test
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2625A, 2620A 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.

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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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