2640A/2645A NetDAQ

Users Manual

Currently, the WINSOCK DLL that operates with LAN Workplace must be downloaded from the Novell forum on CompuServe or you must request a copy from Novell. TCP/IP protocol packages with included WINSOCK DLLs can be purchased from a variety of sources including Microsoft, Banyan, FTP, SunSoft, and IBM.

The Transmission Control Protocol/Internet Protocol (TCP/IP) has evolved as a networking protocol that supports communication among diverse computers and devices (at U.C. Berkeley there once was a TCP/IP-connected Coke machine). The TCP/IP protocol can be used to communicate between programs running on many different computer systems, running under many different operating systems, and even running on several different physical network types (Ethernet being only one of the many types supported).

The TCP/IP protocol stack is isolated from the underlying network hardware by a device driver. Applications use TCP/IP resources via one of the several Application Programming Interfaces (API) that are commonly supported by network software vendors. The API used by the NetDAQ software is WINSOCK (discussed below). There are also API’s for file transfer (FTP) and file sharing (NFS and others).

You rarely need to know the details of the TCP/IP protocol. In summary, TCP/IP enables two computer systems to establish a connection that allows data to be exchanged. Data to be transmitted is broken up into manageable chunks (packets) by the TCP portion of TCP/IP. TCP also reconstructs the data at the receiving end by merging the chunks back together in the correct order. TCP also assures error- free communication by use of a checksum within each packet. Finally, TCP uses the Port ID to specify the specific application within each system that is sending and receiving the data.

The IP portion of the TCP/IP protocol simply addresses, sends, and receives packets. It uses the IP address, the Subnet Mask, and the Default Gateway information. The IP address is described in “IP Addresses and Segmented Networks” in this appendix.

The subnet mask is used to separate the network ID from the host ID in an IP address. For example: if the IP address of a NetDAQ address was 198.178.246.10, and a class C network ID was active, the subnet mask would be 255.255.255.0. When this mask is applied to the address, the network ID is extracted as 198.178.246 and the host ID as 10.

The default gateway information is only used when your network contains more than one subnet, or is connected directly to the Internet. When the network ID of the source and destination address of a packet are different (hosts on different network segments), the packet is forwarded to the default gateway for delivery. The default gateway has knowledge of the network IDs of the other network segments, so it forwards the packet to other gateways on the network until the packet is delivered to the gateway attached to the destination segment with the

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Fluke user manual 2640A/2645A NetDAQ

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.