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© National Instruments Corp. 2-1 GPIB-ENET for Macintosh
Chapter 2
Hardware Configuration and Installation
This chapter gives instructions for configuring the 10Base-T and coax versions of the
GPIB-ENET. It also describes how to connect the GPIB-ENET to a Macintosh computer
or local Ethernet network, switch on the GPIB-ENET, and power on your system.
Configure the Hardware
The GPIB-ENET is shipped from the factory with either a 100 to 120 VAC or a
220 to 240 VAC power supply. Before you configure your GPIB-ENET, verify that the
voltage rating listed on the bottom of the box matches the voltage that is supplied in your
area.
Warning: Operating the GPIB-ENET at any voltage other than the one specified
could damage the unit. Replacement fuses must be the proper type and
size. Refer to Appendix A, Hardware Specifications, for fuse
specifications.
Determine Network Addresses
The Internet Protocol (IP) address is the address that TCP/IP-based networks use to route
information to the appropriate network and host. When you first install a GPIB-ENET in
a network, or if the IP address for the GPIB-ENET changes, you must configure the
IP address for the GPIB-ENET.
The IP address is not the same thing as the Ethernet address. All devices on an Ethernet
network are assigned a physical address, which is the Ethernet address, so that they can
communicate with each other. The Ethernet address of each GPIB-ENET is printed on
the bottom panel identification label.
You should see your network administrator to obtain an IP address that is valid for your
network. Your network administrator can also tell you whether the GPIB-ENET should
have its IP address configured from the network (dynamic configuration) or with the
IPassign utility (static configuration). Dynamic configuration is provided by the
Ethernet Reverse Address Resolution Protocol (RARP). This protocol allows other
devices on the network to configure the GPIB-ENET with an IP address. See the section
Select the Method for Configuring the IP Address, later in this chapter, for information on
selecting the IP address configuration method.
Make a note of the IP address that you use when configuring your hardware, because you
must enter the IP address when you install the NI-488.2 software.