Cabletron Systems MRX Installation Manual

Cabletron Systems MRX Installation Manual Manual pdf 56 page image

TWISTED PAIR WIRING GUIDEPage A-1APPENDIXTWISTED PAIR WIRING GUIDEThe MRX/MRXI 10BASE-T HUB has a 50-pin Champ connector thatallows you to run a 50-pin feeder cable from the HUB to a punch-down block. This Appendix serves as an aid to wiring punch-downblocks and twisted pair segments between your HUB and 10Base-TEthernet devices.A.1 ATTACHING TWISTED PAIR SEGMENTS TO THE HUBTable A-1 describes the pins and the color codes that are used intwisted wiring at the HUB and the connections to a punch-downblock in the wiring closet at the HUB end of the attached segments.Table A-2 shows the pins and the color codes that are used for wiringat the punch down block at the 10BASE-T Ethernet device. Figure A-1 illustrates the pin layout for an RJ-45 connector and a punch downblock and Figure A-2 shows the wiring for a twisted pair segment.To connect the HUB into an existing twisted pair wiring system:1. Connect a 50-pin feeder cable to the Champ connector on theHUB. In most cases, the feeder cable can be connected directly toa punch down block using a Champ connector located on theblock. If not, each segment must be connected at the punch downblock using the information in Figure A-2 and Table A-1. Thistable and figure describes the pins and the color codes that areused to wire into a punch down block.2. Attach the feeder cable to the punch down block.3. Wire the punch down block end of the 4 pair twisted distributionsegment to the B column of the punch down block. Refer toTable A-1 and Figure A-2.4. Wire the RJ-45 wall plate end of the 4 pair twisted distributionsegment to the RJ-45 wall plate in the applicable office.5. Connect one of the RJ-45 connectors on the office drop cable to theRJ-45 port in the office wall plate.