User Manual

MDR2400/5800-SR, Orion2410/5810-SRi and Orion 5825-SR
862-01881 Issue 12c Page 36
4.2.9 Connecting the Element Manager Port
The Element Manager port is used to connect the Digital Indoor Unit to a PC/Laptop
serial port. This enables the Digital Indoor Unit to be configured using the supplied
NMS / GUI software or controlled via a PPP-dialup connection. The port can be
connected to using the supplied serial data cable. The port is configured as DTE.
NOTE The Ethernet 10BaseT port can also be used to control the DIU via the GUI /
SNMP software.
4.3 RF Unit
The MDR2400 and MDR5800 outdoor RF Units are also available as 1U indoor RF
Units, Orion2410i and Orion5810i, that can be rackmounted in a 1U rack.
Before installing the Orion or MDR RF Unit, ensure that a suitable mast is used for the
antenna and that the RF Unit installation is firmly in position. The pole diameter must
be between 50 and 102 mm or between 2" and 4½".
The outdoor unit type RF Unit may also be mounted indoors, utilizing an optional rack
mount adapter (not included as a standard item) at the base of a tower for convenient
access. However, this as not recommended as a long and expensive RF cable would
then be required, compromising system sensitivity and increasing link costs.
CAUTION – ENSURE THAT THE POLE IS EARTHED FOR
LIGHTNING PROTECTION.
Follow these steps to install the RF Unit:
1. Install the system antenna.
2. Adjust the mounting bracket to be slightly bigger than the pole diameter.
3. Secure the mounting bracket to the pole.
4. Secure the RF Unit to the bracket using the screws on each bracket.
5. Connect the RF Unit to the pole electrically by connecting the earth cable or strap
between the pole earth and the RF Unit earth point.
6. Connect the type-N RF output connector to the system antenna through an in-line
lightning protection unit in areas with lightning activity.
7. Cover the connectors using an ultra violet protective, self-vulcanising tape.
4.3.1 RF Connection
1. The RF port is an N-type female connector.
2. The N-Type connector is used to connect to the antenna, typically using coaxial
transmission line.
3. 1/2" or 5/8” coaxial cables are recommended. Coaxial cable that is 7/8” or larger
can exhibit moding at 5.8 GHz and is not recommended for 5.8 GHz radios.