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
- 3.3 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 flexibleTx
- 4.3 Function tests and operational monitoring
- 4.3.1 Work equipment for function tests
- 4.3.2 Connecting the service computer
- 4.3.3 Checking operating states
- 4.3.4 Checking the availability
- 4.3.5 Checking standby carriers ‒ optional
- 4.3.6 Function tests and GNSS operational monitoring
- 4.3.7 Function tests and PTP operational monitoring (optional)
- 4.3.8 Checking external antenna coupling systems
- 5 Service interruption
- 6 Recommissioning
- 7 Maintenance
- 8 Troubleshooting
- 9 Index
No. Component Description
3 RX3 Connector for the connection with CHU 3
4 RX4 Connector for the connection with CHU 4
5 Exp. BS Not used for the time being
6 RX-IN Connector for the connection with an external antenna cou-
pling system
3.2.5 TETRA Channel Unit (CHU)
The TETRA Channel Unit (CHU) is the transceiver module of the DIB-R5 and provides
four radio channels for the voice and data transmission in transmitting and receiving
direction (downlink and uplink) via one carrier signal. A transceiver consists of transmitter,
receiver and transceiver software for the TETRA protocol and generates a modulated RF
signal (carrier) with which signaling data and payload between the base station and the
terminals are exchanged. In addition to providing the carrier signal, the CHU provides
monitoring and control functions, with which the fan speed can be controlled dynamically,
for example.
The following figure shows the front view of the CHU. The following table describes it in
detail.
Product description
Components > TETRA Channel Unit (CHU)
DIB-R5 flexibleTx
44 Operation Manual 90DIBR5flexibleTxOM02 - 1.2