User's Manual

Appendix B: 75-Ohm CATV Cable
Page 22 InterReach Spectrum Remote Access Unit Installation Guide
© 2013 TE Connectivity Ltd TECP-77-222 Issue 2 • 300001759666 Rev B • December 2013
APPENDIXB:75‐OHMCATVCABLE
The75‐OhmCATVCable:
• connectstheIFEUtoMRAU(s)andtheMRAU(s)totheSRAU(s)
• transmits(FWD)multibandandreceives(REV)IFsignals
• deliversDCelectricalpowertotheRAUs.TheSpectrumIFEUDCvoltageoutputis+54Vdc
nominal.IftheIFEUreachesitscurrentlimit,acurrent‐limitingcircuitprotectsit.
• carriesconfigurationandstatusinformation
• uses75type‐Fconnectorswithcaptivecenterpins.
CATVCableRequirements
BeldenCATVcableorequivalentisrequired(seeFigure2).
• FortheRG‐6cable,useaBelden1695ACoax.
• FortheRG‐11cable,useaBelden7732ACoax.
NOTE: TEConnectivityrequiressolidcoppercentercond uctorCATVcableforproperDCvoltagetothe
RAUandmaximumdist ances.
Figure2.Belden 1695A and 7732A Coax Cables
• UseRG‐6orRG‐11CATVcablebetweentheIFEUandMRAU,thetypicallengthsofwhichare
listedbelow.
Cable Type
Minimum Length Maximum Length
Meters Feet Meters Feet
RG-6 0 0 125 410
RG-11 0 0 180 590
RG-11
Belden 1695A Coax
RG-6
Belden 7732A Coax