Farallon Communications PB 1400 - Manual (Page 18)

18 Chapter 2
In the Diagnostics dialog box, click the Test button. If the first test
registers a failure, click the Test button again. If a second failure
registers, verify that the link LED is lit. If any of the tests fail
repeatedly, contact Farallon Technical Support.
Network Guidelines
This section serves as a review of basic guidelines for traditional
10Base-T networks. The guidelines will help you to verify that your
network and your Farallon PB 1400 Ethernet Card will operate well
together.
Guidelines for traditional 10Base-T
Ⅲ Maximum length of 10Base-T segments = 100 meters (330 feet)
Ⅲ Maximum number of nodes on a 10Base-T segment = 1
Ⅲ Recommended cable type = EIA/TIA Category 3 (NEMA standard)
or higher