If a second RS232-C connection is required, make the connection to
the female DB25 SECONDARY connector. Only pins 2 and 3 of the
connector are used for signal tranmission. Set the SEC switch on the
front panel for DCE configuration or DTE configuration as required.
Note:
In addition to the signal pins 2 and 3, three other
pins of each RS232-C connector are wired as follows:
Pin 1
: Chassis ground
Pin 7
: Signal ground
Pin 9
: RS232-C output, positive voltage
The voltage on pin 9 can be employed with a null
modem cable to assert control signals.
3.
Connect 9 Volts dc power to the POWER INPUT mini phone jack.
Specifications
Specifications for the CP01 Chain Port Expander are given in Table C-1.
Table C-1. CP01 Specifications
Ports
RS232-C
RS485
Two female DB-25 connectors, individually selected DCE or DTE
2-pin Molex connector
Power
Input
Connector
9 Vdc 10%; 150 mA maximum
Subminiature phone plug (3/32 inch)
Mechanical
Dimensions (H x W x D)
Mounting
1.5 x 6.4 x 9.8 inches (3.8 x 16.2 x 24.9 cm)
Hook-and-loop fastener strips; mountable on any smooth flat surface
Environment
Ambient Temperature
Relative Humidity
0 to 50 °C
Up to 95%, noncondensing
ACST-0351-005
Appendix C
June 1996
CP01 Chain Port Expander
C-5
