Using the Computer Interface

4

Using the IEEE-488 Interface

RS-232 Prompts

The instrument parses and executes, in turn, each command received from the host over the RS-232 interface. The instrument returns one of the following three response prompts to indicate the results of command execution:

=> No errors; the command was successfully parsed and executed.

?> The command was not understood. Used when an IEEE-488.2 Command Error or Query Error was generated by the command.

!> The command was successfully parsed but could not be executed for some reason. Used when an IEEE-488.2 Execution Error or Device Dependent Error was generated for the command. An example of this would be trying to execute a calibration command when calibration mode is not enabled.

Sample Program Using the RS-232 Computer Interface

Figure 4-2 presents a sample program for controlling the instrument over the RS-232 interface. This program is written in BASIC and is compatible with IBM PC, PC/AT, or equivalent personal computers.

Using the IEEE-488 Interface

IEEE-488 Operating Limitations

The following limitations govern the IEEE-488 interface:

∙A maximum of 15 devices can be connected to a single IEEE-488 bus system.

∙The maximum length of an IEEE-488 cable used in one IEEE-488 system must be the lesser of 20 meters or 2 meters times the number of devices in the system.

With an IEEE-488 interface installed and active, the instrument (2620A/05 or Hydra Series II with 2620A-05K) supports the IEEE-488 capabilities shown in Table 4-2.

Installing the IEEE-488 Interface

The following instructions pertain to the 2620A/05 Data Acquisition Unit or a Hydra Series II Data Acquisition Unit equipped with a 2620A-05K IEEE-488 kit. A standard IEEE-488 cable attaches to the instrument rear panel. The following cables are available from Fluke: Y8021 (1-meter), Y8022 (2-meter), and Y8023 (4-meter).

Select COMM (KL) to check the interface setting. If "IEEE" is displayed, the IEEE-488 interface is already installed and selected. If a numeric baud rate appears in the left display, the RS-232 interface is selected; press Dso that "IEEE" is displayed, then press EE, select the address, and press EEagain.

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Fluke 2620A, 2625A Using the IEEE-488 Interface, RS-232 Prompts, Sample Program Using the RS-232 Computer Interface
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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.

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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