SKU: FMU-400-4-390

TETRA/DMR/P25 400MHz Fiber Optic DAS Master Unit (MU)

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The EMTS Telecom Services Ltd., a fiber Optic system, is built from two main components: MU (Master Unit) and RU (Remote Unit). EMTS provides high-end RF coverage solutions and components to ensure your fiber DAS system's high performance. The optical Master unit (MU) converts the BTS RF signals from RF to optical signals using optical cables. It provides a fiber interface to RU, converts RF to Fiber (DL), and converts Fiber to RF (UL), all while balancing fiber losses. The remote fiber unit (RU) reconverts the optical input signal to RF and feeds it to the antennas. It is designed for modularity and high performance, acting as the end unit in the system and connecting directly to the antenna system. The RU includes amplification modules in multiple output levels and various combinations of various frequency bands, filtering modules, optical to RF, and RF to Optical converters. It provides USB or WIFI connectivity for local settings and a wireless modem for remote control and alarm monitoring. The EMTS Telecom Services advanced fiber optic repeating system is a very cost-effective and practical solution for extending signal coverage in subways, tunnels, and other Indoor or outdoor distribution systems.

Key Features

  • Designed to support Public and Mission Critical Services at 400MHz bands DMR/LMR/Tetra network coverage using advanced FO.technology
  • Fully comply with TETRA, TETRAPOL, and APCO25 standards
  • Expands signal coverage and fill the signal blind area where signals are weak or unavailable in Tunnels, Airports, Railway stations, enterprises, etc
  • The systems include a Master Unit (MU) and multiple Fiber Remote Units (RU)
  • Customized Design for DMR/LMR Suitable for large-scale Indoor Installations
  • Low Optical Transmission Loss, very stable and improved signal transmission quality
  • One Master Unit can support 4, 8, or 16 Remote Units (RU)
  • RJ45 port links a notebook for local supervision or the built-in wireless modem for NMS (Network Management System) monitoring & controlling equipment parameter
  • Backup Battery for 2 hours of operation via external 24-volt battery
Technical Specifications
Technical Specifications
Items (Uplink) Downlink
Frequency (MHz ) (380-385) 390-395
(Other customized bands are (385-390) 395-400
possible ) (410-415) 420-425
415-420 425-430
450-455 460-465
455-460 465-470
Bandwidth 5 MHz
Transmission Distance ≤ 10Km
Max. Input Level (Non-destructive) +10dBm
Output Power (RF) -10±2dBm (Uplink)
Output Power (Optical) 0±3dBm (1310nm) / -6±3dBm (1550nm)
System Gain (Cable Access) 5±3dB
VSWR ≤ 1.8
I/O Impedance 50Ω
Connector (RF Connector) 1x N Female
Optical Connector 4 RU: 4 x FC/APC
Optical Receiver Sensitivity -15dBm
Operating Temperature Range – 20°C to+ 50°C
Relative Humidity Range ≤ 95% (non-condensing)
Power Supply AC 220V,50/60Hz External Backup battery 24v input
Dimensions 19-inch rack 2U height (485mm X 350mm X 90mm)
Weight ≤10kg
Application Indoor (IP30)
Monitoring and Control USB (for local settings) 4G Modem (for Remote Monitoring using EMTS NMS )
Comply with Standards
Safety EN60950-1, EN 50385
EMC EN 301 489-1, EN 301 489
Radio EN 302 561
TETRA (DMR) ETSI TS 101 789-1 and EN 303 035-1 and EN 300 394-1
CE Comply areas, office buildings, subways, tunnels, and shadowed areas. The EMTS coverage solution supports all major
mobile technologies and standards of wireless Networks.

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