Copper Cable Specifications - Cabletron Systems TRFOT-2 User Manual

INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.2 COPPER CABLE SPECIFICATIONS

Cabletron includes a DB9 to DB9 Shielded Twisted Pair cable with the
TRFOT-2. Use this cable to connect the TRFOT-2 to the token ring
station adapter card or concentrator. To attach the TRFOT-2 to a token
ring device that does not have a DB9 connector, you need an adapter
cable. Cabletron offers adapter cables for RJ45 or MIC style
connectors. Copper cable must meet the following requirements:
Maximum Cable Length
The maximum allowable length for copper cable is 10 feet.
Connector Pinouts
Table 2-2 provides a cross reference of copper cable connector pinouts.
Table 2-1. Connector Pinout Cross Reference
Signal
Name
TX+
TX-
RX+
RX-
Media Filters
To connect an Unshielded Twisted Pair (UTP) segment from a token
ring concentrator to the TRFOT-2, you need to install a Type 3 media
filter such as the Cabletron Systems TRMF-2. Use the TRMF-2 at the
concentrator end of the connection as shown in Figure 2-1.
DB9 STP Cable
Page 2-2
DB9 9-pin
D-shell
9
5
1
6
PC
Multimode Fiber Cable
TRFOT-2
Figure 2-1. UTP Cable Connections
RJ45 8-pin
Modular
6
3
4
5
Concentrator
Data Connector
(MIC)
O (Orange)
B (Black)
R (Red)
G (Green)
UTP Cable
TRMF-2 Media Filter
TRFOT-2