Modular Wiring - Equinox Systems MEGAPORT Hardware Reference Manual

Modular Wiring

CS Modular Splitter
Modular splitters are used with modular adaptors and modular
cable. Modular splitters convert the 50-pin connector to a set of 12
modular jacks. Figure 3-7 illustrates devices connected to the
MEGAPORT using the modular splitter.
The CS modular splitter (Equinox part number 210016)
converts the signals on the 50-pin connector to 12 RJ-11
modular jacks. (Two modular splitters are required to
connect 24 devices.) This splitter should be used to connect
to CS ports only. An LD version of the modular splitter
(Equinox part number 210117) is available for connecting
devices to LD ports.
Either 4 or 6-wire modular cable may be used to attach
devices to the splitter. The outer two wires which support
control signals are omitted when using 4-wire cables.
Standard modular cables used for telephones are always
reversing (e.g. pin 1 is connected to pin 4, etc.) and are
typically 4-wire. If a user supplied modular cable is used,
make sure the cable is reversing (see paragraph heading
Modular Cables).
Modular adaptors convert modular jacks at the end of
modular cables to DB-25 RS-232 connectors. One adaptor
for each device to be connected is required.
The CS modular splitter is wired as shown in Figure 3-8. Signal
names shown refer to those present on the CS telco connector.
Note that pins 49 and 50 of the 50-pin telco connector are connected
together and are used for signal ground.
28
Figure 3-7. CS Modular splitter
Equinox MEGAPORT Hardware Reference Manual