User's Manual

7-50 InterReach Unison Installation, Operation, and Reference Manual PN 8700-10
620003-0 Rev. B
7.8.3 232 Port Expander Connection
In this configuration a port expander is used to allow the connection of multiple
devices to a single PC serial port. Testing was performed with an Equinox SST-16P
Multiport Board. A DB-25 male to DB-9 female modem cable must be made to con-
nect the connector panel to the Main Hub (refer to Appendix A.6 on page A-5). Or,
you can use a DB-25 male/DB-9 male adapter with a DB-9 female to DB-9 female
null modem cable.
Figure 7-14 OA&M Connection using a 232 Port Expander
NOTE: See Appendix A.6 on page A-5 for the modem cable wiring information.
232 Port Expander
Host Cable
Serial Expansion Card to Connector Panel
Connector Panel
DB-25 male to DB-9 female
Modem Cable
PC running
or OpsConsole
Software
AdminManager