User's Manual
Table Of Contents
- Table of contents
- 1 Notes on the document
- 2 Safety regulations
- 3 Product description
- 3.1 Characteristics of the DIB-R5
- 3.2 Components
- 3.2.1 Connection and control panel
- 3.2.2 VAC voltage supply
- 3.2.3 VDC voltage supply
- 3.2.4 Divider Unit (DIU)
- 3.2.5 Transmitting filter
- 3.2.6 TETRA Channel Unit (CHU)
- 3.2.7 Base Station Controller Unit (BSCU)
- 3.2.8 Interconnection Relay Unit (IRU) ‒ only in the case of a CHU expansion
- 3.2.9 Fan unit
- 3.2.10 Cavity combiner
- 3.2.11 Backplane
- 3.3 Interfaces
- 3.4 Wiring diagrams
- 3.5 Redundancy options
- 3.6 Scope of delivery
- 4 Operation
- 4.1 Safety measures and prerequisites
- 4.2 Switching on the DIB-R5 advanced
- 4.3 Function tests and operating surveillance
- 5 Service interruption
- 6 Recommissioning
- 7 Maintenance
- 8 Troubleshooting
No. Component Description Connector
type
6 Mini-USB USB port for service purposes Mini-USB
7 Reset button Reset button for restarting the
integrated BSCU Mainboard
(MCB) component
---
3.2.8 Interconnection Relay Unit (IRU) ‒ only in the case of a CHU expan-
sion
The Interconnection Relay Unit (IRU) is the receiving and distribution unit of the base sta-
tion in a second equipment or compact rack and establishes the connection to a BSCU in
the first equipment or compact rack. All the control information as well as clock and time
signals are distributed by the IRU to the CHUs in the second equipment or compact rack
and kept synchronous.
The IRU is a modular subrack for the DIB-R5 advanced, up to two IRUs can be installed.
An IRU can be replaced during ongoing operation in case of malfunctions to quickly re-
establish radio coverage.
The following figure shows the front view of the IRU. The following table describes it in
detail.
Product description
Components> Interconnection Relay Unit (IRU) ‒ only in the case of a CHU expansion
DIB-R5 advanced
48 Operation Manual 90DIBR5advancedOM02 - 1.0