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Tel: +359 56 820027, Fax: +359 56 836700
E-mail: [email protected] ,Web: www.devabroadcast.com
APPENDIX A
CABLES FOR CONNECTING TO THE MONITORED DEVICE
Cables must be shielded with a metal braid. The screen is soldered to the connectors’ casing. The
conductors must have be at least 0,22 sq. mm (23 SWG) across. Install the DB2003 close to the
monitored device and make sure the cables are not unnecessarily long.
COM1 CONNECTOR
The COM1 Connector services only one RS232 interface of the point-to-point variety. The cable
has one connector on each end – Male and Female. The connections are direct – Pin 2 to Pin 2, Pin 3
to Pin 3, Pin 5 to Pin 5 and Screen to Casing.
DB2003 COM1 to RS232 on Monitored Device
COM2 CONNECTOR
The COM2 Connector services three interfaces and GPO. At the most, four cables will come out
of the connector:
•
Cable 1 to RS232 connector on monitored device;
•
Cable 2 to RS485 connector on Plug-in (only Plug-in series models use RS485);
•
Cable 3 is for I
2
C bus;
•
Cable 4 is for GPO, if used.
The figures below represent diagrams of the separate cables. When making your cable, please
keep in mind that in all figures, COM2 could designate the same connector. At the most, the four
cables will use four connections to the common ground. Only three pins are available, one of which
will have to be shared by two cables.