3 modem to personal computer serial connection, Modem to personal computer serial connection – Keri Systems SB-293 User Manual
Page 65
Keri Systems, Inc.
Technical Reference Manual – PXL-250 and SB-293
Revision 5.5
P/N: 01836-004
Page 65
9.10.3
Modem to Personal Computer Serial Connection
Keri Systems does not provide this cable. It is an off-the-shelf item from any computer
supplier or electronics store, and its connector configuration is dependent upon the
configuration of the serial port on the host computer. Based on the serial port of the
modem and the PC, there are four possible cables.
•
If the modem has a male DB-25 connector and your host computer has a female
DB-9 connector on the serial port, purchase or create a cable according to Table 19
and Figure 9-19, both on page 66.
•
If the modem has a male DB-25 connector and your host computer has a female
DB-25 connector on the serial port, purchase or create a cable according to Table
20 and Figure 9-20, both on page 67.
•
If the modem has a male DB-9 connector and your host computer has a female
DB-9 connector on the serial port, purchase or create a cable according to Table 21
and Figure 9-21, both on page 68.
•
If the modem has a male DB-9 connector and your host computer has a female
DB-25 connector on the serial port, purchase or create a cable according to Table
22 and Figure 9-22, both on page 69.
If you purchase a cable or create your own cable, use a permanent marker and mark
each connector housing with the appropriate label (Modem or PC). Each connector is
biased so it will fit on its corresponding socket in one direction; you cannot plug in a
connector incorrectly.
Take the completed cable and insert the connector marked MODEM into the serial
port connector in the back of the modem. Insert the connector marked PC into the
serial port connector. Each housing on the serial cable's connectors has two small
screws in the housing's case. These screws correspond with threaded stand-offs on the
serial port connector bodies. With a thin-blade screwdriver, secure these screws to the
stand-offs to ensure the cable does not loosen itself from its serial port connections.