9-pin Port-Powered RS-232 to RS-422/485 Converters

(Ottawa,IL) B&B Electronics Mfg. Co. announces the release of four
port-powered RS232-to-RS-422/485 converters. Each of these converters is
packaged in a compact DB-9 hood. These units convert RS-232TD and RD lines
to balanced RS-422/485 signals. The pinouts of the 422LP9R and 485LP9R
matches a SMPTE (video standard) compatible controlling device. 

All of the converters are powered from the RS-232 handshake lines DTR and
RTS (one must be high). The RS-422/485 driver is enabled/disabled with
RTS. The receiver is constantly enabled on RS-422 units. On RS-485 units,
the receiver is disabled when the driver is enabled and is enabled when
the driver is disabled. 

All of the converters have a female DB-9 connector on the RS-232 side. The
422LP9R and 485LP9R have a female DB-9 connector on the RS-422/485 side.
The 422LP9TB and 485LP9TB have terminal blocks on the RS-422/485 side and
can be externally powered with a 12 VDC supply. All are priced at $59.95
each. 

For more information about these converters and to receive B&B Electronics'
free catalog of Serial Communication Interface and Control Equipment
contact: 

B&B Electronics Manufacturing Co.
707 Dayton Road - P.O. Box 1040 - Ottawa, IL 61350
24-Hr. Fax: (815) 434-7094
Phone: (815) 433-5100  8 am to 4:30 pm Central
24-Hr. BBS: (815) 434-2927
E-mail: catrqst@bb-elec.com
Home Page http://www.bb-elec.com
 
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