Fluke 2645A, 2640A Instrument Scan Queue Overflow! Oldest scans overwritten, Invalid Alarm Value

Models: 2645A 2640A

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2640A/2645A NetDAQ

Users Manual

Instrument Scan Queue Overflow! Oldest scans overwritten!

NetDAQ Logger is unable to retrieve scans from the instruments quickly enough and the instrument scan queue has overflowed. In this condition, the instrument is overwriting the oldest scans and saving the newest scans.

Improve the data throughput characteristic. (See "Optimizing Performance for Speed" in Chapter 4 of this manual.) When the scan queue overflows, the action taken depends on your setting in the netdaq.ini file, i.e., discard the newest scans or overwrite the oldest scans. (See, “Configuring the netdaq.ini file” in Chapter 3 of this manual.)

Instrument software is outdated for this version of NetDAQ Logger!

You are attempting to communicate with an instrument whose software is incompatible with this version of NetDAQ Logger.

Contact your Fluke Service Center to have your instrument software upgraded.

Instruments with invalid BCNs [Setup File Name] not loaded! Configure communications with desired BCNs!

You have tried to load instrument icons from a setup file for instruments that do not appear in the Communications Configuration File.

The Communications Configuration File dialog box (select the Communication Config command from the Setup menu) has an Instruments on Network list, which is common to all setup files. When a setup file is opened and contains icons for instruments that are no longer on the Instruments on Network list, this message appears. You must add the missing instruments to the Instruments on Network list that you removed in other operations and then reopen the setup file to place the instruments back on the Icon Bar.

Invalid Actual Calibration Value! Choose a value closer to the suggested value!

You have selected a calibration input value that is invalid.

Calibration consists of entering specified values over the range of the instrument input. You must select these or similar values for proper calibration. If you select values too far from an acceptable input, they will not be accepted as calibration values.

Invalid Alarm Value!

You have entered an alarm value that is excessively large.

Select an alarm value that is less than +9.9999E+9.

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Fluke 2645A, 2640A user manual Instrument Scan Queue Overflow! Oldest scans overwritten, Invalid Alarm Value

2645A, 2640A specifications

The Fluke 2640A and 2645A are advanced bench multimeters that represent a significant leap in measurement technology, designed primarily for electrical engineers and technicians who require precision and reliability in their readings. These multimeters are built to cater to complex applications in manufacturing, research, and development.

One of the standout features of the Fluke 2640A and 2645A is their high accuracy. With specifications that can reach up to 0.0035% DC Voltage accuracy, users can trust that their measurements will be consistent and precise. This is especially critical in fields like automated test equipment (ATE) where exact measurements can be crucial for product quality and safety.

Both models incorporate a large, easy-to-read display, making it convenient for users to view measurement results clearly from a distance. They also feature a wide measurement range, capable of handling a variety of tasks, from basic voltage and current measurements to more complex tasks such as resistance and temperature measurements with appropriate sensors.

The multimeters also stand out with their advanced data logging capabilities. The Fluke 2645A, for instance, can store up to 10,000 readings, allowing for extensive data collection and analysis without the need for constant monitoring. This is beneficial for long-term studies or processes that require continual oversight.

Connectivity is another key characteristic. Both the 2640A and 2645A support USB and RS-232 interfaces, which enable easy integration with computers and other devices for seamless data transfer. This feature is important for engineers who rely on software for data analysis and visualization.

Another notable technology included in these models is the Fluke Connect app compatibility, which allows users to remotely monitor measurements from their smartphones or tablets. This capability provides added flexibility, enabling technicians to work hands-free while still keeping an eye on process measurements.

Additionally, the Fluke 2645A comes with a graphical display option, allowing users to visualize measurement trends over time. This graphical representation can be invaluable for diagnosing issues or observing patterns in data.

In conclusion, the Fluke 2640A and 2645A multimeters offer exceptional performance with their high accuracy, extensive data logging, connectivity options, and advanced visualization capabilities. These features make them indispensable tools for professionals in a variety of fields, ensuring that they can achieve reliable results in their measurement endeavors.