Cabling The Module; Cable Compliance; Cabling Guidelines - 3Com NETBUILDER II Installation Manual

1-8 C 1: I
HAPTER NSTALLATION

Cabling the Module

Cable Compliance

Cabling Guidelines

4 Hand-tighten the captive screws. Then gently tighten them with a small (1/8 - 3/16")
screwdriver. Do not overtighten.
A solid connection of the connector/LED panel to the chassis is required for proper
operation. Do not use the screws to force the board into place.
Refer to "Cabling the Module" to finish the installation.
This section contains compliance, cabling, and pinout information for the RS-232
3-Port cable and the DTE-to-DCE adapter, which are used to cable the RS-232 3-Port
module to DCE and DTE devices.
Table 1-1 lists the supported cabling emissions compliance.
Table 1-1 Cable Emissions Compliance
Cable Type
HSS RS-232 3-Port cable 50-pin socket at one end
DTE-to-DCE adapter
CAUTION: Although each end of the DTE-to-DCE adapter has a 25-pin socket connector,
you must attach the end of the adapter labeled "NB-II" to the 25-pin connector on the
RS-232 3-Port cable. Connect the other end of the adapter labeled "To DTE" to the 25-pin
connector on the DTE device (such as a cluster controller).
The 50-pin socket on the HSS RS-232 3-Port cable connects to the 50-pin connector
on the HSS RS-232 3-Port DTE/DCE module. The three 25-pin connectors at the other
end of the 3-port cable connect to RS-232 connectors on a DCE device (such as a
modem, ISDN terminal adapter, or a CSU/DSU).
To connect one or more of the three 25-pin connectors on the 3-port cable to a DTE
device (such as an IBM cluster controller or an IBM mainframe computer), you must
first change the port's jumper setting from DTE to DCE correctly as described in
"Changing the Jumper Settings" , and attach a DTE-to-DCE adapter provided by 3Com
to the corresponding cable connector.
Connectors
of the cable to connect to
the 50-pin connector on
the RS-232 module.
Three 25-pin RS-232
connectors at the other
end of cable to connect to
devices with RS-232 ports.
25-pin socket connectors
at either end of adapter
(one labeled "To DTE" and
the other "NB II ") for the
module port to connect to
a DTE device. (See the
CAUTION next)
Emissions Compliance
FCC Class A EN55022 Class B
VCCI Class A VDE Class B
Yes Yes
Yes Yes