Maintenance 6

Performance Test

8.Short Channel Inputs Remove the Universal Input Module from the instrument and apply a short to channels 1 through 8. Reinstall the Universal Input Module.

9.Start Instrument Scanning Select Logging Start Instrument to start the instrument scanning. The instrument must be scanning to set the DIO lines.

10.Open Spy Window Select the Spy command from the Utilities menu. Select 01DIO. Click OK to open the Spy window.

11.Verify Digital I/O Output for all Set Lines The Spy window summarizes the 8 DIO binary lines as a decimal equivalent, i.e., 0 for the present condition of all lines set (00000000).

12.Measure DIO Lines Using a digital multimeter, measure the output of each DIO line, referenced to the GND line, for a voltage less than +0.8V dc.

13.Close Spy Window.

14.Stop Instrument Scanning Select Logging Stop Instrument to stop instrument scanning.

Digital Input Test

6-26.

This test checks the Digital I/O lines when used as inputs.

1.Connect Test Leads to DIGITAL I/O Connector Remove the 10-position DIGITAL I/O connector from the instrument rear panel. Connect a test lead to

each DIO line 0 to 7, plus a test lead to the GND line. Also connect a test lead to the Σ (Totalizer) output. Reinstall the connector.

2.Open Spy Window Select the Spy command from the Utilities menu. Select 01DIO. Click OK to open the Spy window.

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Fluke 2640A, 2645A user manual Digital Input Test

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.