User Manual

MDR5800 User Manual
862-01881 Issue 6 Page 11
2 TECHNICAL DESCRIPTION
2.1 System Overview
A MDR5800 digital radio link (DRL) consists of a pair of MDR5800 radio stations.
The MDR5800 radio station consists of two main parts:
• An Outdoor Unit operating in the 5.8 GHz ISM frequency band. The Outdoor Unit
provides the radio transceiver functionality by accepting radio link data from the
Indoor Unit and converting it to the 5.8 GHz ISM frequency band using spread
spectrum modulation. The received signal is de-spread and transmitted to the
Indoor Unit in a digital format.
• An Indoor unit, available with 1, 2 or 4 E1 and 1, 2 or 4 T1 data interfaces (choice
of E1 or T1 is software selectable). The Indoor Unit combines nE1 or nT1 data
with Wayside Service Channel serial data and link IP data to be transmitted
across the radio link. The Indoor Unit also provides power to the Outdoor Unit.
Interconnection between Outdoor Unit and Indoor Unit is achieved using low cost data
and power cables.
2.2 Outdoor Unit
The MDR5800 Outdoor Unit makes use of Spread Spectrum modulation technology
for license-free operation in the 5.8 GHz ISM band.
For MDR5800 operation, the 5.8 GHz ISM band is divided into upper and lower
frequency sub-bands. An MDR5800 ‘High Band’ Outdoor Unit transmits in the higher
frequency sub-band and receives in the lower frequency sub-band, while a ‘Low Band’
Outdoor Unit transmits in the lower sub-band and receives in the higher sub-band. An
MDR5800 radio link will use a ‘Low Band’ Outdoor Unit on one end of the link to
communicate with a ‘High Band’ Outdoor Unit on the other end.
The MDR5800 Outdoor Unit uses a Type-N RF output connector for connection to any
5.8 GHz antenna for applications where long range is required.
The system is available for use in FCC regulated countries.
User Data
MDR5800 ODU
MDR5800 IDU
User Data
MDR5800 ODU
MDR5800 IDU