Configuring NetDAQ Logger for Windows

3

Configuring an Instrument

∙External Only

A scan is triggered immediately after the external trigger input is pulled low (active). While the external trigger line remains low, each successive scan is triggered after Interval 2 elapses since the start of the previous scan.

∙Alarm Only

A scan is triggered when the instrument detects an alarm condition on a channel being used as an alarm trigger. As long as at least one alarm trigger channel is in alarm, each successive scan is triggered after Interval 2 has elapsed. The instrument performs background scanning of alarm trigger channels, according to Interval 5, until it detects an alarm condition. The Alarm Checking Interval (Interval 3) is configurable in the netdaq.ini file. Defaults are 1 second (2640A) and 0.1 second (2645A).

When the external trigger is combined with the alarm trigger, scans are triggered at the Interval 2 rate as long as either the external trigger line is low or at least one alarm trigger channel is in alarm.

When the interval trigger is combined with the external trigger and/or the alarm trigger, scans are triggered at the Interval 2 rate when the conditions are met for the external trigger and/or the alarm trigger, and at the Interval 1 rate at all other times.

5.Select the slow reading rate for high precision, the fast reading rate for high speed, or the medium reading for a balance of the two. The actual number of readings per second depends on the selected functions.

6.Enable Drift Correction to have the instrument automatically correct measurements for drift due to changes in instrument temperature and humidity. You can disable Drift Correction to obtain a faster scan rate when you have set the reading rate to fast, but this may reduce long-term accuracy.

7.Enable Trigger Out (TO) to have the instrument set the rear-panel TO line to logic low for 125 µs each time a scan starts. Disable Trigger Out if you are not using it so that the instrument may achieve maximum scanning speeds. NetDAQ Logger automatically enables the trigger out when an instrument is the Master of an externally wired group.

8.Enable and enter a value for the duration if you would like NetDAQ Logger to automatically shut down logging for the instrument after the specified time has elapsed since the start of logging.

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Fluke 2640A, 2645A user manual
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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.

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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.
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