Manuals / Fluke / Computer Equipment / Network Card

Fluke user manual 2640A/2645A NetDAQ

Models: 2645A 2640A

1 353
Download 353 pages 43.78 Kb
Page 270
Image 270

2640A/2645A NetDAQ

Users Manual

ID portion to be the higher order 24 bits of the IP address (a class C address). Using the Subnet Mask, the TCP/IP software is able to detect if a destination address is in the local subnet or if the packet must be sent to another subnet through a Router or Gateway.

Networks are segmented by use of an active device called a Router (Gateways and hubs sometimes have router capabilities.) When a host on one subnet wants to send a message to a host on another subnet (the Net ID sections of the IP source and destination are different), the Router is used to deliver the packet to the other network subnet.

NetDAQ instruments are shipped with a default IP address of 198.178.246.bcn, where bcn is the base channel number assigned to the instrument. This is a Class C Net ID assigned to the Fluke Corporation, so it is highly unlikely that it will overlap with a Net ID in use at your company. However, if you want to attach a NetDAQ instrument to an existing network, you should check with your Network Administrator before using the default IP address or assigning a new IP address to a NetDAQ instrument or PC.

When assigning the IP address to your PC, unless your network contains a Router, you must use the same Net ID used by the NetDAQ instruments (for example, 198.178.246.z). If you do this, you should set z to a number that does not interfere with the instruments. Because the BCN can range from 1-99, you should set z of the IP address of your PC in the range 101-254. The Subnet Mask assigned to the PC should be 255.255.255.0.

If your network contains more than one subnet, and you want to communicate with a NetDAQ instrument in another subnet, you need to set the default gateway address in both the PC and NetDAQ to the address of the local router. The TCI/IP stack will detect that the destination address for a packet is in a different subnet (via the subnet mask) and send the packet to the default gateway address where the router will route it to the proper subnet.

For example, if you have three NetDAQ instruments with bcn’s 1, 2, and 3, and a single PC, you could set the following IP addresses:

NetDAQ #1

198.178.246.1

NetDAQ #2

198.178.246.2

NetDAQ #3

198.178.246.3

Host PC

198.178.246.101

This would place all three instruments and the PC in the same subnet (net ID 198.178.246).

During initial operation of the TCP/IP software the IP section builds a table that contains the correspondence between the IP address and Ethernet address of each host. This is done via the Address Resolution Protocol (ARP). To do this, the IP

I-8

Page 269 Page 271
Page 270
Image 270
Fluke user manual 2640A/2645A NetDAQ
Page 269 Page 271

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.