Introduction - ICPDAS RFU-433 User Manual

RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.00

1. Introduction

The RFU-433 is an RS-232/RS-485 to 433 MHz radio modem that can
be used to convert data from an RS-232/RS-485 device to RF message
and transmitted in transparent mode via the 433 MHz ISM frequency
band.
The RFU-433 provides a maximum line of sight (LOS) transmission
distance of 500 meters at an RF Baud Rate of 9600 bps. In order to
overcome the
environments, the RFU-433 allows the RF transmission Baud Rate to be
configured to a minimum of 650 bps, enhancing the capability of the
modem to resist noise and other interference. Additionally, the RF
channels and Group IDs are adjustable, which is helpful when attempting
to avoid interference encountered when two RFU-433 networks are
adjacent. The 16 RF channels and 8 Group IDs can be configured in order
to distinguish and control the different RFU-433 networks. The majority of
these configuration parameters can be adjusted using a combination of
the Rotary and DIP switches, thereby providing a simple method of
maintaining the system if the RFU-433 modem needs to be replaced.
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interference that may be encountered in harsh
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