GarrettCom 6K32TRC - Manual (Page 64)

Magnum 6K32T & 6K32TRC Managed Switch Installation and User Guide 05/07)
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ports for cascaded connection. This feature eliminates the need for a special twisted pair
crossover cable when connecting to a hub or another switch.
Each port has an Activity (ACT) LED indicating packets being received, a
Link (LK) LED that indicates proper connectivity with the remote device when lit, a
FDX/HDX LED to indicate full-duplex mode when lit (or half-duplex when off), and a
“10/100” LED indicating 100Mb when lit (or 10 Mbps when off).
Important Note: The 10/100 RJ-45 ports are supported with Auto-negotiation and
Auto-crossover (MDIX), which allow the RJ-45 ports to automatically Link with any RJ-
45 device and eliminate the use of cross-over cable.
The RJ-45 pins normally (TP crossover switch) are per the standard for hubs-to-
users twisted pair wiring: 1 = receive+, 2 = receive-, 3 = transmit+, 6 = transmit-,
other pins not used. When the TP crossover push-button is UP, the pins of the RJ-
45 port are per the standard for up-links using twisted pair wiring, i.e., the transmit
and the receive pairs are exchanged: 1 = transmit+, 2 = transmit-, 3 = receive+, 6 =
receive-, other pins not used.
NOTE: for Power Substations: In support of the IEEE 1613 Class 2 standard, GCI
advises that, for substation applications, the RJ-45 ports are intended for
connectivity to other communication equipment such as routers or
telecommunication multiplexers installed in close proximity (i.e., less than 2
meters or 6.5ft) to the 6K32. It is not recommended to use these ports in
substation applications to interface to field devices across distances which
could produce kigh (greater than 2500V ) levels of ground potential rise (GPR)
during line-to-ground fault conditions. The 6K32 passes the 1613specifications
for zero packet loss with fiber ports & with RJ45 ports used as indicated here.
5.2.10a. New PoE (Power Pass-through), model P6KP8V-RJ45 (MDIX), 10/100Mb
8-port
The PoE RJ-45 ports act similar to regular RJ-45 ports, except they have
capability of providing power on each port to power up the PD devices, per the
IEEE802.3af PoE standard. The Power Pass-through PoE modules are totally dependent
upon the powerful -48VDC input power supply to support more RJ-45 (10/100) ports.
Each port requires at least 15watts to power up the PoE PD devices. In this Fig. the top 8-
RJ45 ports are enhanced with POE option The 8-RJ45 POE modules are also available
with mix –n-match with fiber modules. Please check the ordering information Sec.1.2 for
all the various P6K PoE modules option.