The MDS SD Series are industrial wireless solutions that provide long distance communications over licensed radio bands, allowing users to interface to both Ethernet and serial controllers such as PLCs, RTUs and SCADA systems. This software-controlled digital radio is the latest generation of MDS licensed narrowband wireless devices and is compatible with previous generations, allowing for a smooth and controlled upgrade to existing systems.

The MDS SD is available in several frequency ranges, including 216-235 MHz, 350-512 MHz and 928-960 MHz.

Full Ethernet Bridging to support TCP and UDP

High speeds in 5 KHz, 6.25 KHz, 12.5 KHz, and 25 KHz channels

Multiple serial and IP/Ethernet device connectivity on a single radio

Easy migration path from serial to IP/Ethernet

Backward integration with existing MDS x710 networks

Operational temperature range from –40°C to 70°C CSA Class I, Div. 2 groups A,B,C,D for Hazardous Locations IEEE1613 for electric substation environments Supports two serial ports and an IP/Ethernet port simultaneously Broad coverage flexibility over distances up to 50 miles Supports both Ethernet Bridging and dedicated serial to serial communications Low power consumption with sleep mode for solar and battery powered applications Fast-serial features with embedded serial to IP/Ethernet conversion

Exclusive-use, non-shared licensed band operation Point-to-Multipoint, 2-way communication High receive sensitivity for long distance communications Compatible with multiple industry protocols including Modbus, Modbus TCP, and DNP3 AES 128-bit data encryption Password protected access and lockdown

The MDS SD Series of industrial-strength data communications products offer secure, reliable, long distance transmission of data for your mission critical applications. The higher transmit power used by the SD to operate in the licensed 200 MHz (SD2), 400 MHz (SD4) and 900 MHz (SD9) frequencies results in a wide area of coverage. The SD's exceptional receiver sensitivity allows for deployment in applications where obstructions, such as trees and buildings, would limit the effectiveness of other wireless devices. The combination of these features results in the ideal data acquisition product for error free, long distance communication.

MDS SD Series radios can be directly added to existing MDS x710 and x790 systems, providing both "drop-in" compatibility for expansions and replacements, and adding Ethernet support. Backward compatibility preserves your investment and allows a smooth transition from a serial based SCADA infrastructure to IP/Ethernet without disrupting day-to-day operations.

Available in three models, the SD2 operates within 200 MHz, the SD4 operates within 400 MHz and the SD9 operates in the 900 MHz frequency band. Choose between remote models that support both Ethernet and serial, or only serial interface. The SD Series handles concurrent Ethernet and serial traffic from multiple sources. Directly communicate to multiple PLCs using the built-in serial device server and modem-sharing device using industry-standard TCP or UDP protocols.

Mission-critical applications demand that no single point of failure can stop the communications system. In wireless applications the Master Station serves as the central hub to all remote radios. Installation of an SD adapter to an existing x790 Master Station adds direct Ethernet connectivity to an IP network, and adds advanced data encryption. The SDA Master Station with redundancy option increases the availability of a system with a warm-standby configuration. The standby radio activates automatically whenever a fault condition is detected by the active radio.