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2-14
C
2: I
HAPTER
NSTALLATION
Wiring
Considerations
Connecting the
Cables
You must consider the wiring scheme of your cabling when you connect a
device such as a host, terminal, modem, or other serial equipment to a
serial connector on a 16-port asynchronous module.
The asynchronous module's serial ports are configured as DCE for
attachment to DTE devices, such as terminals. With the right type of cable,
you can also attach these ports to DCE devices, such as modems. See
Appendix A, "Pin Assignments," for pin assignments of these connectors.
You need a small slotted screwdriver. To cable hosts, terminals, modems, or
other serial equipment to a 16-port asynchronous module's serial connector,
follow these steps:
1 Decide which cabling options to use to connect your hosts, terminals,
modems, or other serial equipment to each serial connector—for example,
an extension cable, octopus cable, and D-type adapter, or an extension
cable, patch panel, 6-wire cable, and D-type adapter.
2 Assemble the cables, patch panels, and adapters.
3 Cable hosts, terminals, modems, or other serial equipment to each serial
connector.
4 Install a cable strain relief mechanism for each module.
This mechanism consists of a metal bracket and a captive screw.
Install one bracket in the upper portion of the back panel between the two
serial connectors of each 16-port asynchronous module (see Figure 2-11).
a Slip the long bar with curved edges at one end of the bracket over each
serial cable connector, and the integral tab at the other end of the
bracket into the small hole in the panel.
b Fasten the bracket to the panel with the screw. Do not overtighten.
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