2640A/2645A NetDAQ

Users Manual

2.Loosen the wire clamp screw for the associated terminal.

3.Feed the wire into the gap between the connector body and the wire clamp.

4.Tighten the wire clamp; do not overtighten and crush the wire.

5.Repeat steps 2 through 4 for each wire.

6.Insert the connector in the rear panel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIGITAL I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

I/O Line 0

5

I/O Line 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

I/O Line 1

6

I/O Line 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

I/O Line 2

7

I/O Line 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

I/O Line 3

Σ

Totalizer Input

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

I/O Line 4

 

Signal Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

1

 

2

3

 

4

 

 

5

 

6

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-5. DIGITAL I/O Connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Digital I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-13.

The Digital I/O lines use terminals 0 to 7 and GND. You can use these lines either as signal inputs or as alarm outputs. See Table A-3 in Appendix A for complete specifications.

Totalizer

2-14.

The Totalizer uses terminals Σ and GND. The Totalizer counts contact closures or voltage transitions with a maximum count of 4,294,967,295. See Table A-7 in Appendix A for complete specifications.

Alarm/Trigger I/O Connections

2-15.

PCaution

To avoid damage to the instrument, do not apply any voltages greater than 30V maximum between the ALARM/TRIGGER I/O connector terminals and earth ground.

The eight-terminal ALARM/TRIGGER I/O connector (Figure 2-6) on the rear panel of the instrument provides connections to Trigger In (TI), Trigger Out (TO), and Master Alarm (MA) I/O lines along with a common ground connection. (See the "Trigger Input," "Trigger Output," and "Master Alarm Output" discussions in Chapter 1 for additional information.) The dc power connection is also on this connector. (See "DC Power" above.).

2-12

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Fluke 2645A, 2640A user manual Digital I/O, Totalizer, Alarm/Trigger I/O Connections
Page 43 Page 45

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.
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