Specifications

ABACOM Technologies • 32 Blair Athol Crescent • Etobicoke • ON • M9A 1X5 • Canada • Tel: +[phone] • Fax: +[phone]
RTcom-RS232 Radio Modem Subassembly with RS232 Interface
• 2400bps to 19.2Kbps half duplex.
• 3-Wire RS232 Interface, TX(Data), RX(Data) and GND
• RS232 Interface protected to +/-15kV ESD in accordance with EMC requirements.
• Microcontroller with watchdog.
• Automatic Transmission Mode switching upon receipt of serial data from the DTE.
• Operates from WINDOWS or DOS under terminal mode.
• Transmission range up to 400ft with 0.25mW ERP
• Available on 418MHz and 433.92MHz
• Status LED’s
• 7.5V to 15Vdc via DB-9 connector. <30mA
• Reset switch - activates Power On Test Routine
• Baud Rate and Data protocols configuration via on-board DIP switch.
Functional Overview
The RTcom-RS232 contains all the hardware and
firmware required to make a wire free, user friendly
connection to serial interfaced devices. TTL plus
RS232 capability permits the Rtcom to replace exist-
ing wired data networks. The dual-standard interface
also eliminates the need for interface cards permit-
ting additional savings to be made. In polled net-
works system latency is typically better than 10ms,
permitting standard network acknowledge messages
to be received without need for any system timing
modifications.
Data Protocols Supported
Single or multiple characters may be transmitted at data rates of 2400, 4800, 9600 and 19200bps. Code bal-
ancing is automatic. Both eight and nine bit data protocols are fully supported.
Transmitted data can take any format providing there are no pauses in the transmission. Pauses will cause
data framing errors and should be avoided. For reliability we recommend that data packets are kept below 1K
bytes per single transmission. Large files should be transmitted as multiple packets using for example
Z-modem, Kermit or Xon-Xoff protocols.
70mm x 65mm x 15mm
Order Code:
RTcom-RS232- 4xx (4xx refers to the operating frequncy of 418MHz or 433.92MHz)
Data / Power cable (data cable with D-type connectors and external power supply feed cable)