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Interface board suits portable apps

Posted: 09 Jul 2008     Print Version  Bookmark and Share

Keywords:interface board  cable-replacement  half-duplex  interface circuitry 

Tdi2

Radiometrix Ltd. introduces TDi2, a RS232 interface board which combines a TDL2A 433-9 OEM multi-channel wireless modem module (operating at a half-duplex serial data rate of 9600bps), an RS232 driver, a 9 way DB9F connector, helical SMA aerial and power connectors, and a local 5V voltage regulator.

A pair can be used as a serial RS232 cable-replacement in many 9600baud half-duplex applications. It just needed to be hooked up to a 6 to 15V power supply, and it operates without the need for any additional interface circuitry. Status LEDs indicate reception of valid data packets, and power 'on', and it can be enabled by DTE asserting DTR.

The synthesiser based TDL2A module operates on 5 non-overlapping frequencies in the 433MHz European ISM band with option to choose 8 addressed point-to-point links. It's -107dBm sensitive receiver and full 10mW transmit output power combine to offer a typical range of well over 200m

This compact (61x33mm, excluding the antenna), highly integrated wireless device is particularly suitable for portable applications such as remote data acquisition and industrial telemetry systems, and interfaces easily to handheld terminals, PDAs, laptop computers, and data loggers.

It conforms to both EN 300 220-3 and EN 301 489-3 standards.





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