User Manual

MDR2400 and MDR5800 User Manual
862-01881 Issue 8 Page 15
2.3 Indoor Unit
The Indoor Unit is designed for mounting in a 19” rack, occupying a 1U slot, or can be
table-top standing.
The Indoor Unit accepts user nE1/nT1 and combines it with Wayside Service Serial
Data and IP data to be transmitted across the radio link.
The Indoor Unit is fitted with a DC power supply.
A firmware variant exists that determines whether the Outdoor Unit is an MDR2400 or
MDR5800. The Indoor Unit hardware is independent of the type of Outdoor Unit i.e.
whether it is an MDR2400 or MDR5800.
2.3.1 Payload Interface Options
The Indoor Unit can be configured for nE1 or nT1 operation.
• 1, 2 or 4 x E1 (2.048 Mbps)
• 1, 2 or 4 x E1 (1.544 Mbps)
For E1 connectivity, bipolar AMI or HDB3 line coding is software selectable.
For T1 connectivity, bipolar AMI or B8ZS line coding is software selectable.
MDR MTE 75/120 OHM INDOOR UNIT 651-04008-02
MDR MTE INDOOR UNIT V2 651-03810-02
Figure 4. Indoor Unit Front Panel
Reset/Configuration
Button
System
LED
Payload
LED
Wayside Service
Serial Channel
nE1/nT1
Connector
Balanced
RF Link
LED
Element
Manager
Connector
Ethernet Link LED
10BaseT RJ45
Socket
nE1/nT1 BNC
Connectors: Unbalanced
Rx = In, Tx = Out