User Manual

MDR2400/5800-SR, Orion2410/5810-SRi and Orion 5825-SR
862-01881 Issue 12c Page 10
1 Introduction
1.1 Radio Description
The MDR2400-SR, MDR5800-SR, Orion2410-SRi and Orion5810-SRi are ISM band
digital radio systems that provide short to medium range, point-to-point digital
communication with high data security at rates of T1, 2T1 or 4T1. Alternatively, the
radio can be software configured to convey E1, 2E1 or 4E1. The radio can also be
configured to bridge or route IP via a 10BaseT port. The data rates scale depending
on the number of enabled T1/E1 tributaries and whether the data is being bridged or
routed. The products make use of spread spectrum technology and may be operated
license-free in the 2.4GHz and 5.8GHz ISM bands.
The Orion 5825-SR is a similar radio also operating in the 5.8GHz ISM band.
Modulation can be switched between 16 and 32 QAM with digital output scalable up to
8T1/E1.
The radios are ideal for applications such as:
• Cellular/PCS base station interconnects.
• Telecommunications companies, cellular operators and private carriers.
• State Local and Federal Government communication systems.
• Video surveillance data distribution.
• Power utilities.
• Petroleum/gas collection companies.
• Rural communications.
• Emergency/disaster telephone service restoration.
• Internet distribution.
The radio consists of two main parts:
• An RF Unit operating in the 2.4 GHz or 5.8 GHz ISM frequency bands.
This could be an MDR2400ET, MDR5800, Orion2410i, Orion5810i or an Orion
5850 unit. The units with an “i” suffix is 1U Indoor RFUs.
• An Digital Indoor Unit, available with a Telecommunications (1, 2 or 4T1/E1 and up
to 8T1/E1 on the Orion 5825) interface and a Data interface (10BaseT Ethernet).
This could be an MDRTE, an MDRETU (75 Ohm BNC), Orion10 or an Orion25
unit. All DIUs operate with the MDR2400ET, MDR5800 and Orion10i RFUs.
Only the Orion type DIUs operate with the Orion type RFUs.
Interconnection between the RF Unit and Digital Indoor Unit is achieved using a low-
cost UV-protected STP (Screened Twisted Pair: 4 pairs) data cable and a UV-
protected 2-core power cable. The split Digital Indoor Unit and RF Unit configuration
is used for the lowest loss between the antenna and the transceiver, thereby ensuring
optimal long-range performance.
The RF Units use a Type-N RF (female) output connector for connection to a coaxial
cable jumper when co-located with a 2.4 GHz or a 5.8 GHz antenna for applications
where long range is required.