User's Manual

MDR2400-SR, MDR5800-SR and Orion 5825-SR

Issue 10 Page 24

2.3.7 10BaseT Ethernet RJ45 Port

This port is used for communications with the NMS / GUI software from a laptop / PC

or with an SNMP manger to control the system. It can also be connected to a hub for

10BaseT wayside Ethernet throughput.

The interface type is DTE (Data Terminal Equipment) and can support Full and Half

Duplex Ethernet connections. Select the Ethernet Duplex mode from the following

MIB element: 1.3.6.1.4.1.1316.1.1.1.4.16 mdrmteEthernetFullDuplex.

Take note that connecting the radio to an Ethernet hub requires the Ethernet interface

to operate in Half Duplex mode.

2.3.8 IU/OU Link LED

This LED indicates if there is a suitable electrical connection between the Indoor and

Outdoor Units

2.3.9 IU/OU Data Interconnect RJ45

This receptacle accepts an RJ45 plug that connects to UV-protected STP (Screened

twisted pair) cable used between the IU and the OU.

2.3.10 IU/OU Power Interconnect

This connector (socket) is used for power interconnection between the IU and the OU.

The connection is made using UV-protected 2-core cable. The cable is connected to a

GREEN, two-pin connector, a plug.

CAUTION

The polarity sense (labelled) must be maintained between the IU and the OU.

2.3.11 Auxiliary In/Out Port

The auxiliary in/out port is used for remote monitoring and control. The following are

provided

j. Two inputs (for sensing contact closure or opening) are provided to sense site

alarm inputs. The states of these alarm inputs can be monitored with NMS, as

well as from an SNMP Management Station.

k. Two relay contact outputs, normally-open and normally-closed contacts, are

provided as alarm / auxiliary outputs. Output states are software customised and

controlled. The outputs are used to indicate alarm or other states selected by the

operator via the NMS or a SNMP Management Station.

NOTE that on V1 hardware only the Ethernet Physical interface is checked with this LED, not the

RS232/485 interface. The integrity of the RS232/485 interface is checked using the front panel

“System LED”. On later versions the RS232/485 interface is no longer used.