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Press Release |
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March 17, 2009 |
Low-power embedded radio modem with Reed-Solomon error correction for
long-range applications |
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Circuit Design, Inc., the leading supplier of narrowband radio modules,
has recently developed and released a 434 MHz low-power radio modem, the
MU-2-R.
Circuit Design’s MU series are modems for embedding in industrial
equipment. They incorporate the RF circuit required for radio
communication and a CPU for control, and data is exchanged with an
external CPU using the UART serial interface based on commands. The
MU-2-R is also supplied with an antenna. This complete solution allows
you to develop equipment quickly using built-in radio, without having to
pay much attention to the high frequency element. |
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The MU-2-R is now 55% smaller than the earlier models, and is offered at
a lower price.
The MU-2-R also features FEC (Forward Error Correction) employing
Reed-Solomon code that is used in satellite communications and compact
discs. This ensures highly reliable radio communication even with a weak
electric field or when burst noise is present.
Designed for narrow band FM and with high receiver sensitivity, the
MU-2-R has a communication range of 600 m (line-of-sight) with the 10 mW
output authorized for the European harmonized ISM band. In addition, the
built-in relay function enables wide-area telemetry systems and remote
control applications covering several kilometers using battery-powered
operation with 10 mW output.
Circuit Design, Inc. will start shipment of mass-produced products from
March 2009.
Samples cost 15,300 yen, and the unit price for a 1,000-unit lot is
5,800 yen.
The features of the MU-2-R are explained below.
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Most of the parts required for radio communication
are built in |
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The internal CPU handles all processes required
for radio equipment design, including PLL control, insertion of
preambles, wireless data links, and data input/output timing
control.
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Commands for measuring radio communication
integrity |
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In order to check communication integrity in the
design stage and when the equipment is actually installed in the
field, the MU-2-R is provided with commands for measuring the
electric field intensity of the received signal and floor noise.
You can also remotely check the electric field intensity of units
placed in a distant location using commands.
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Convenient functions enabling multiple networks |
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The MU-2-R is preprogrammed with 127 radio
frequency channels. You can also choose between 10 mW and 1 mW
output.
Flexible link IDs allow you to build 1:1, 1:N, and N:N systems. In
addition, the relay function lets you cover a wider area. Besides
remotely measuring the radio wave environment where the unit is
installed, you can also change the frequency of the unit.
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Develop products suitable for both Japanese and
European markets |
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The MU-2-R was first launched in the Japanese
market where it has been very well received. It has received
Technical Standard Conformity Certification in Japan and does not
require any new radio authorization testing.
The frequency of models for the Japanese market is 429 MHz.
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Various interfaces |
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RS-232 and USB interface boards are available to
simplify development of MU-2-R systems.
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Product specification:
http://www.cdt21.com/products/modem/mu2/
High resolution images：
http://www.cdt21.com/dl2/pr/index.asp
About Circuit Design
Circuit Design, Inc. designs and supplies low power radio modules for
various application fields such as telecontrol, telemetry, alarms,
serial data transmission and audio. The products comply with European
ETSI, US FCC and Japanese ARIB standard.
Quality is assured with an ISO9001-certified design and manufacturing
process based in Japan.
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