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Spread Spectrum Wireless Radios

SR900 Series

The SR900 Series Wireless Radio was specifically designed for today's telemetry and SCADA application.  It is a reliable, cost-effective, license-free radio interface with transceiver frequency hopping from 902 - 928 MHz.  This telemetry radio is perfect for any point-to-point and point-to-multipoint serial equipment operation.

The SR900 is field configurable as either a master, slave or repeater and comes with built in CRC-16 error detection and auto-retransmit to provide accurate and reliable data transmission.  It has the maximum allowable transmit power (1-watt) with a superior gain of 135 dB allowing line-of-sight communications at distances over 14 miles.  Non line-of-sight communication is also possible since the SR900 can be used as a repeater to span the distances for other nodes in the network. 

The sixty two different user-selectable pseudo-random hopping patterns support multiple networks and addressing includes station ID and network address.  In addition, the user configurable encryption maximizes security and privacy.

The SR900 has a small footprint making it ideal for panel mounting, has digital and analog I/O options available, and it can be configured as either a master or slave with the included, easy-to-use Windows based configuration utility.

In Review:

Point-to-point and point-to-multipoint operations

Field Configurable as Master, Slave or Repeater

Built-in Repeater Capabilities

Power requirements 12-24VDC 500ma

Compact "footprint" ideal for panel mounting

Configuration Software included

Spectrum Analyzer and Remote Diagnostics included with Software

Transparent operation for ASCII or most PLC and SCADA protocols

1 Watt RF output; 10-20 mile range (subject to terrain, etc.)

Remote Diagnostics and Programming

License Free 900 MHz ISM band

Configurable for complex networks using multiple repeaters

Modbus I/O

5 Digital In, 2 Digital Out and 2 Analog In

Base I/O Expansion Options (RS232 connection)

4 Digital In, 4 Digital Out and 1 Analog In or ...

2 Digital In, 1 Digital Out, and 4 Analog In

Expansion Card Options

4 Digital In, 4 Digital Out or ...

8 Digital In


TSR900 Series

The TSR900 is the latest generation of industrialized license-free radios and was designed and developed specifically for today's telemetry and SCADA applications.  It has all the features of our SR900 plus built-in input output capabilities utilizing the Modbus protocol.  The Modbus I/O enables integrators to conveniently use a single device to monitor and control remote stations.  The I/O includes 5 digital inputs, 2 digital outputs and 2 analog inputs with additional digital and analog I/O available in various configurations.

In Review:

Radio has same features and specs as SR900

RTU uses standard Modbus protocol

Event count and elapsed Runtime registers for 4 Digital Inputs

Minimum and Maximum Register for 1 Analog Input

Modbus I/O

RTU built in - 5 Digital In, 2 Digital Out and 2 Analog In

Base I/O Expansion Options (RS232 connection)

4 Digital In, 4 Digital Out and 1 Analog In or ...

2 Digital In, 1 Digital Out, and 4 Analog In

Expansion Card Options

4 Digital In, 4 Digital Out or ...

8 Digital In

TSR900 Link (Span distances over 10 mile - unlimited w/repeaters)

No Programming

Secure encryption over 10 miles - unlimited with repeaters

1, 2 or 3 remote site connections with master

2 control output signals sent to any remote

Easily upward expandable to a PLC Master

Programmable selection of channels

Built-in CRC-16 error detection and auto-retransmit to provide

accurate and reliable data transfer

Addressing includes station ID and network address


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19900 County Rd. 81, Maple Grove, MN 55311

SR900 Series Radio

Spread Spectrum

Telemetry Radio

  Programmable selection of channels

  12-24 VDC power requirement

  Dial modem emulation mode allows calling a specific remote site

  Transparent operation with asynchronous protocols

  Send/receive packet analysis

TSR900 Series Radio

Spread Spectrum

Telemetry Radio

  Secure encryption over 10 miles - unlimited with repeaters

  1, 2 or 3 remote site connections with master

  2 control output signals sent to any remote

  Easily upward expandable to a PLC Master