2640A/2645A NetDAQ

Users Manual

Packet drivers support only one protocol at a time. As a result, only one package of protocol software can use a packet driver at any one time.

Packet drivers are usually loaded by executing a *.com or an *.exe file in the autoexec.bat. This loads a terminate and stay resident (TSR) program during the DOS boot process. The setup of the packet driver is usually done by including command line switches on the driver load line. There must be at least one switch that assigns the soft interrupt used to communicate with the protocol stack. Other switches may be required to set the IRQ, port address, and other parameters.

For example, the 3Com EtherLink packet driver is loaded by executing the line 3c5x9pd.com 0x60, where the 0x60 sets the soft interrupt to number 60 (hex). This driver needs no other parameters because it reads the other information from flash memory on the interface board. On the other hand, the Cabletron adapter packet driver reads setup information from a file named e21pd.cfg. Since each driver is different, the NetDAQ Logger installation program has packet driver information built-in for only the Ethernet drivers we sell. If other hardware is used, you must enter the proper information in the Trumpet setup window during the installation process or edit the autoexec.bat file directly.

Both ODI and NDIS are multi-protocol, packet driver standards. They both allow operation of more than one set of protocol software "over" the driver at the same time. Use of this feature will be discussed in the protocol section below.

The ODI standard was defined by Novell for use with the netware line of networking software. It supports the native IPX/SPX protocol of netware and other protocols, such as TCP/IP.

NDIS was defined by 3COM and Microsoft for use with the LANManager networking software. It has since become commonly used by other network operating systems. It also supports multiple protocols, including IPX/SPX and TCP/IP.

ODI and NDIS drivers are usually loaded by being included in a DEVICE= line in the config.sys file. This line loads a DOS-level driver. There are a few implementations of the NDIS driver as a Windows VxD level driver. The NDIS driver used with the Windows for Workgroups version of MS Windows is a Windows VxD.

The setup information for NDIS drivers is contained in a file called protocol.ini that must be in the same directory from which the driver is loaded. This file contains sections describing the driver characteristics and the protocols that may be operating over the driver. For example, a driver characteristic section might look like this:

[EtherLinkII]

DRIVERNAME=ELNKII$ INTERRUPT=5 TRANCEIVER=INTERNAL IOADDRESS=0x300

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Fluke user manual 2640A/2645A NetDAQ
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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.

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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