Radio modem with digital I/O
SENTINEL Wood & Douglas

The Sentinel range of digital data radios are the latest addition to the ScanLink range of telemetry radios. These are designed for data transmission applications within SCADA systems. Point-to-Point and Point-to-Multi-Point operation is supported. It is envisaged that the highly respected Wood & Douglas analogue Scanlink hardware in use worldwide will slowly be replaced by the new Sentinel range.

Sentinel digital radios for SCADA radio telemetry applications
* Integrated radio, DSP based modem and multiplexer
* Duplex operation
* 5W RF output power
* 15 MHz switching bandwidth (excluding diplexer)
* Remote diagnostics
* Network management system
* Protocol independent

Features include full duplex operation, rapid Tx/Rx turnaround time, remote diagnostics and a comprehensive network management system (NMS). The NMS requires no operational break in the SCADA data flow.

The Sentinel embedded data transport protocol uses a proprietary encapsulating technique which employs header information called SIDS. This permits all manner of host data to be transported and uniquely delivered quite independent of the formal host protocol. Complex networks using concurrent yet different protocols are therefore possible as are 'group call' and routed delivery mechanisms.

The Sentinel range is designed for world-wide applications and in particular meets the stringent specifications needed for European operation (ETS 300 113).