Product Manual

Product Manual for Tornado Radio Unit

1 TORNADO SYSTEM OVERVIEW

Mimomax Tornado delivers the next generation of high performance true MiMO narrowband remote radios for

SCADA, Protection and Linking applications. The Tornado is the market leader for narrowband throughput and

functionality with a full duplex aggregate one-way raw data rate of up to 960kb/s in 75kHz in its highest modulation

mode.

Tornado radios provide a radio wireless infrastructure for connecting devices used by various applications to form

a network through which IP data, RS-232 serial data or RS485 synchronous serial data can seamlessly flow.

Features include isolated power supply with low power consumption, full duplex operation with built in duplexers

and supporting a combination of interfaces, with very high scalable data rates, remote over the air network

management, optional SNMP, ModBus and DNP3 support and a very efficient random-access protocol.

Operating in the licensed frequency bands between 400-470MHz & 806-960MHz, 700Mhz Upper A-Block and

VHF, with a wide temperature operating range and optional waterproof outdoor mount. The Tornado enables

unrivalled performance while maintaining Mimomax’s renowned reputation for reliability and operational efficiency.

The Mimomax Tornado radio platform is configurable in three types of system linking, Network Digital Links (NDL),

Multi-Point Digital Links (MDL) and an Optimised Protection Variant (OPV) of the NDL link. The one Tornado radio

platform can be configured differently for the different roles required by these links through the enabling and

disabling of features and functionalities.

1.1 NETWORK DIGITAL LINKS (NDL)

The Mimomax NDL is a highly reliable and robust point-to-point wireless linking solution designed to support PMR

Linking, SCADA and Backhaul applications.

An NDL link is a simple point-to-point over-the-air connection between two Tornado radios in NDL mode. One is

configured as master, the other as slave. This link allows for very quick data transfer. Modulation can be fixed or

adaptive.

Simple NDL Link Diagram

Utilizing the MiMO technology and full-duplex operation, this narrowband fixed wireless solution provides a reliable

low-error data transport service. A number of internal interfaces are available to support various SCADA

applications and also multichannel, conventional, analogue, simulcast, MPT, P25 and/or TETRA digital networks

in trunked and simulcast configurations.

For PMR applications, a separate high-quality Network Interface Box (NIB) with up to 6 x 32k ADPCM audio

channels plus 9k6 RS232 signalling channel, supports analogue networks.

Multiple links can be cascaded to cope with difficult terrain and very long paths. Different mounting options provide

the much-needed flexibility for varied network requirements. Being fully compatible with the rest of the Mimomax

product types, NDL can be incorporated into the Mimomax MDL (point-to-multipoint) linking solution.

NDL links are well-suited for providing backhaul links between sites in P25, DMR and MPT networks. Each link

can carry multiple voice channels (the number varies with the modulation scheme) and have residual bandwidth

for maintenance tasks. A high priority queue is available to provide EF priority to voice and other critical data over

the link. The following diagram shows a simplified two-site trunked P25 network with an NDL link providing the

backhaul between the remote site and the central site.