Embedded low power radio modem
CIRCUIT Design , a leading supplier of narrowband radio modules, has updated the MU-1 low power radio modem launched last year with new relay and communication margin measurement functions.
With the new relay function you can now achieve long distance communication (1 leg about 600m) using a maximum of 10 relay stations, with the 10mW output authorised for the European harmonised ISM 434 MHz license exempt band. This enables a broader range of industrial applications such as data acquisition over wide areas and control of equipment placed in remote locations.
The MU-1 is a serial data communications modem designed to offer the reliability, shock resistance, vibration resistance and high quality required for use in industrial applications. The MU-1 uses the UART serial interface to interface with the host system, while data input/output is performed with simple commands.
The new relay function is achieved by issuing these same dedicated commands from the source station. Not only can you transmit and receive system data over a relay, you can also remotely set system channels from the source station.
In addition, a new command has been added for measuring the communication margin. For example, you can remotely check the field strength (signal level and floor noise) of target stations in remote locations with commands from the source station. In addition, we have provided a convenient command for measuring packet success rate.
Since the status of each station can easily be checked, it is possible to devise a design that achieves optimum performance at the equipment design stage.
The MU-1 comes with flexible Link IDs that allow you to build 1:1, 1:N, and N:N systems so that combined with the relay function, it is possible to build anything from simple systems to complex systems optimized for a wide range of applications.
Operating at low voltage with a low consumption current, the MU-1 is ideal for battery operated applications. In addition, it has an operating temperature range from -20 to 60ºC thanks to our unique temperature compensation circuit.
Wireless data rate: 9,600bps. Conforms to EN-300 220. MU-1 single unit price Euro 225. An RS232C interface kit, USB interface kit, and LAN interface kit are also available to support a variety of interfaces.
29-Sep-2005