Cabletron Systems EMC38-12 - Manual (Page 25)

EMC38-12 USER’S GUIDE Page A-1
APPENDIX A
CABLE REQUIREMENTS
This appendix provides cable requirements for each of the EMC38-12
ports.
A.1 10Base-T TWISTED PAIR REQUIREMENTS
When you connect a 10Base-T twisted pair segment to the EMC38-12,
the device at the other end of the twisted pair segment must meet IEEE
802.3 10Base-T specifications. Your 10Base-T twisted pair segment must
meet the following requirements.
Segment Length
The IEEE 802.3 10Base-T standard requires that 10Base-T devices must
be able to transmit from 0 to at least 100 meters (328 feet) per segment of
24-gauge unshielded twisted pair (UTP) cable.
Insertion Loss
The maximum insertion loss allowed for a 10Base-T segment is 11.5 db
at all frequencies between 5.0 and 10.0 MHz. This includes the
attenuation of the cable, connectors, and patch panel.
Impedance
10Base-T specifies cable impedance between 85 and 110 ohms.