InterReach Unison Installation, Operation, and Reference Manual
A-1
D-620003-0-20 Rev J
CONFIDENTIAL
APPENDIX A
Cables and Connectors
A.1
CAT-5E/6 Cable (ScTP)
• Connects the Expansion Hub to the RAU(s)
• Transmits (downlink) and receives (uplink) IF signals
• Delivers DC electrical power to the RAU(s). The Expansion Hub’s DC voltage
output is 36V DC nominal. A current limiting circuit is used to protect the Expan-
sion Hub if it reaches its current limit
• Carries configuration and status information
• Use shielded RJ-45 connectors
• Distances:
• Minimum: 10 meters (33 ft)
• Recommended Maximum: 100 meters (328 ft)
• Absolute Maximum: 150 meters (492 ft)
Refer to
Cat-5/5E/6 Cabling Requirements for Unison Family
Field Note (FN04-001)
for more information.
There are four separate twisted pairs in one CAT-5E/6 screened twisted pair (ScTP)
cable. The ScTP cable loss described in this document is for CAT-5 Belden 1624P
DataTwist Five cable, or equivalent. Table A-1 lists the functional assignment of the
pairs:
Table A-1
CAT-5E/6 Twisted Pair Assignment
Pair (wire number)
Function
1 & 2
Clock and Input Voltage
3 & 6
RS-485
4 & 5
Uplink IF, UL Pilot and Ground
7 & 8
Downlink IF, DL Pilot and Ground
