Sun Microsystems Sun Workstation 100U System Manager's Manual page 28

Unpacking and Setting up the 150U
Sun 100/150 Installation Manual
2.4.2. Ethernet
If you purchased a system with Ethernet, your system is shipped with the Ethernet Controller
Board installed in your workstation's Multibus card cage. You will receive a package containing
the transceiver and transceiver cable necessary to complete implementation of the Ethernet for
a single workstation, and an Ethernet Oontroller Reference Manual. The coaxial cable necessary
to implement a network with multiple machines may be purchased separately from Sun.
Setting up an Ethernet with all Sun-supplied components is fairly straightforward:
1. Terminate the 50-ohm coaxial cable by placing a transceiver at both ends. Screw the cable
into the transceiver N-connectors; cover the open N-connector on each transceiver with a
terminator. In lieu or a transceiver, you may terminate the cable with two barrel connectors
and terminators. Handle the coaxial cable with some care, as it is fragile; don't run it in an
area w here it may be run over.
2. For each workstation, plug one end of the transceiver cable into the IS-pin D-connector on
the transceiver, and the other end into the "ETHERNET 10 MBIT" connector on the card
cage enclosure backplane.
Please note that there are certain cabling limitations which must be observed for proper Ether-
net implementation:
Table
2-4:
Ethernet Cabling Limitations
Ethernet Cabling Limitation8
MAXIMUM contiguous length of coaxial cable segments 500.0 meters
Distance between transceivers.
2.5 meter
sections
MAXIMUM length of transceiver cable
50.0 meters
• Transceivers must be placed at 2.5 meter intervals along the coaxial cable. These intervals
are marked on the cable with a black band. If you want to spread transceivers along a greater
length of cable, make sure the distance between any two transceivers is a multiple of 2.S meters.
For more information, see t.he Ethernet manual shipped with your system. If you have ques-
tions about repeaters or non-stardard Ethernet configurations, please contact Sun Microsystems.
2.4.3. Asynchronous Serial Ports
You may attach a terminal, modem, printer, plotter, or other device which uses the RS-232
interfaces, to one of the serial port connectors labelled "RS232 A" and "RS232 B" on the back
panel.
2-6 Revision H of 12 March 1984