User's Manual
Table Of Contents
- 5827 Exhibit D - User Information
- Tune-Up Procedure
- User Manual
- MANUAL COVER PAGE
- Copyrights
- CMM Labeling and Disclosure Table
- Service Information
- Document History
- Contents
- List of Figures
- List of Tables
- List of Processes
- List of Procedures
- About MTS LiTE, MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual
- MTS Overview
- General Safety
- Radio Frequency Distribution System
- RFDS Theory of Operation
- MTS LiTE and MTS 2 RFDS
- MTS 4 RFDS
- Expansion Cabinet RFDS
- Site Controller
- XHUB Controller
- Base Radio
- Power Supply Unit
- Cooling Fans
- Technical Specifications
- Environmental and Standards Specifications
- Cabinet and Module Specifications
- MTS Cabinets Frequency Range
- Dimensions of the MTS Cabinets
- RF Specifications
- Transmitter Specifications
- Receiver Specifications
- Site Controller Specifications
- Internal GPS Module Input Specifications
- MTS LiTE / MTS 2 Duplexer Specifications
- MTS LiTE / MTS 2 Preselector Specifications
- MTS 4 Duplexer Specifications
- MTS 4 Post Filter Specifications
- MTS 4 Preselector Specifications
- Auto Tune Cavity Combiner (ATCC) Specifications
- Manual Tune Cavity Combiner (MTCC) Specifications
- Hybrid Combiner Specifications
- Base Radio Specifications
- Power Supply Unit Specifications
- XHUB Controller Specifications
- RX Splitter Specifications
- MTS LiTE, MTS 2, and MTS 4 Connectors
- Expansion Options
- MTS 4 Outdoor Enclosure
- Appendix A: Field Replaceable Units (FRUs)
- Appendix B: Planned Maintenance Inspection (PMI)
- Appendix C: Static Precautions and ESD Strap
- Appendix D: TETRA/Dimetra Acronyms
Chapter
12
Cooling Fans
One or more fan modules generate an airflow to manage the temperature within the MTS cabinets.
Cooling Fans Overview
Each fan module consists of two fans. A sensor monitors the fans revolution and in the event of failure, an alarm is
generated.
Note: Low power configurations of MTS LiTE and MTS 2 can optionally operate with cooling fans.
Figure 182: MTS Fan Kit
Cooling Fans Theory of Operation
The MTS card cage contains fan kits which reside below the modules. The PSU supplies and controls the three fan
kits speed (max two for MTS LiTE) to reduce the noise in normal temperature environments. The fan speed is based
on the temperature of the modules. The latter require that the Site Controller software monitors the module
temperatures and controls the fans speed through the CAN Bus.
MTS LiTE and MTS 2 offer configurations which do not need fans. The temperature range is from -30 °C to 55 °C. If
the temperature range is extended to 60 °C, two fan kits for MTS LiTE or three fan kits for MTS 2 need to be
305 | Cooling Fans
6802800U74-AD | September 2014 | Send Feedback
Applicant: Motorola Solutions
Equipment Type: ABZ89FC5827 / 109AB-5827
Exhibit D2