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The pinouts for all female DB-25 connectors are identical (Figure 5-2).
Figure 5-2. Female DB-25 Connector Pinouts
Device Wiring
Device wiring is dependent on the specific signal requirements of the
system peripheral devices. Cable connectors plugged into the PM16-
DB or CMX16-DB ports must have a male DB-25 connector. The
connector on the opposite end of each cable should mate to the
peripheral device port (terminal, printer, personal computer or
modem).
Depending on the specific signal requirements of the system peripheral
devices, 3-, 4-, or 7-wire connections can be made.
Figures 5-3 through 5-5 show the cable configurations for these
connections.
Figures 5-6 and 5-7 illustrates a modem cable.
5-2
IBM Serial I/O 128P Expandable Subsystem Hardware Installation Manual
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