Designed to be embedded into OEM equipment this compact radio transceiver module was developed for industrial applications that require stable and reliable operation. To ensure reliable radio communication in the congested 2.4GHz ISM band the STD-503 uses noise resistant direct-sequence spread spectrum (DSSS) modulation which improves transmission speed and provides a true diversity receiver function for preventing signal drop-out due to multi-path fading. This is accomplished by including two physically separated antennae, a feature not available in many lower cost receivers. Circuit Design has developed its own ASIC to accomplish these features and to guarantee the long-term supply of key wireless components.
Measuring 40 x 29 x 5.5 mm the module is 50% smaller than earlier designs and in addition to retaining the same command control used for frequency channel switching in earlier models, channels may also be switched according to a pre-set channel plan. A maximum of 20 pre-set channels can be saved.
LPRS adds, “Operating in the 2.4GHZ band the new STD-503 transceiver complements our own, recently launched, eRIC system-on-chip wireless transceiver which, as it operates at sub 1GHZ, can offer extended range where required.”