EMC37-12 USER’S GUIDE
A-1
APPENDIX A
CABLE REQUIREMENTS
This appendix provides cable requirements for each of the EMC37-12
ports.
A.1
10BASE-T TWISTED PAIR REQUIREMENTS
When you connect a 10BASE-T twisted pair segment to the EMC37-12,
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
transmit 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.
