Installation guide

Connecting to the Network
3-14 Installation
Figure 3-4 Connecting a Twisted Pair Segment with RJ45 Connector
3. Verifytha talinkexistsbycheckingthattheportRX(Receive)LEDisON(flashing
amber,blinkinggreen,orsolidgreen). IftheRXLEDisOFFandtheTX(Transmit)
LEDisnotblinkingamber,performthefollowingstepsuntilitison:
a. Toviewthereceiveandtransmit
activityonagroupofsegments,pressthe
GROUPSELECTbuttonforlessthanonesecond(seeFigure 3‐4)tosteptothe
groupofinterest(Groups1through4).
b. EachtimetheGROUPSELECTbuttonispressedforlessthatonesecond,the
GROUPLEDlightsupinsequence,
indicatingwhichGroupisselected.The
receiveandtransmitactivityforthatgroupofsegmentsisthenindicatedbythe
RXandTXLEDsforeachsegment.
c. VerifythatthecablingbeingusedisCategory5UTPwithanimpedancebetween
85and111 ohms.Iftheportistooperateat
100 Mbps,category 5cablingmustbe
used.
d. Verifythatthedeviceattheotherendofthetwistedpairsegmentison,and
properlyconnectedtothesegment.
1 RJ45 cable connector 2 RJ45 port connector 3 GROUP SELECT button
Note: If the RX and TX LEDs of a port do not indicate a link and the end-point device is a
PD, you may have a port without 48 Vdc to operate the PD. To check the PoE Port Status,
refer to “Verifying PoE Port Status” on page 3-17.
1X
G
R
O
U
P
1
11X
OFFLINE/
RESET
COM
MGMT
GROUP
SELECT
GROUP
1
2
3
4
5
6
7
8
9
10
11
12
12 X
POE
CPU
1
2
3
4
7G4285-49
Gb ENET
RX
TX
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