Beschrijving
As a common transportation, Railways transportation increases the carrying capacity, shortens the transportation time and decreases the transportation cost which improve the quality of transportation services, yield greater customer satisfaction, and help to create the socioeconomically balanced societies. And this highly efficient transport mode creates significant challenges in terms of investment, technology, industry, and environment.
Railway radio communication which offering voice or data services needed for daily operation. Various radio communication system/technology have been used for many years for railway operational applications, such as analog radio, digital radio, TETRA, GSM-R, LTE-R are used for railway communication. Radio communication networks are critical to train operations including stringent requirements for reliability, availability, safety and security for these operations.
HELIOS® VHF Band Simplex Digital Optical Transport System is designed to extend the railway coverage of VHF Simplex Based communication.
Utilizing a centralized digital CPRI distributed architecture, HELIOS® VHF Band Simplex Digital Optical Transport System is a two-tier architecture consisting of the Optical Master Units (OMUs) and Optical Remote Units (ORUs). RF signals from Base Stations, off-air, can be received. The signal is filtered and then converted to a digital CPRI data stream. The digital CPRI packet data stream is transported via single mode fiber and received by the ORUs. The ORUs then convert the digital CPRI packet data stream back to RF and amplify the signal for delivery to the antennas, or radiating cable.
The whole system network topologies including star, chain and hybrid to cater to different deployment scenarios. These network topologies provide reduced fiber plant usage and installation cost, and effective fiber loop redundancy configurations.
Functie
1.ALL Digital Software and Hardware Platform
2.CPRI Transport between OMU’s and ORU’s
3.VHF Simplex communication support
4.Supports 4 Digital Optical Output Ports for each OMU
5.Supports up to 8 Remote Units cascading in each optical port
6.One OMU support up to 32 Remote Units connection
7.Single Fiber core to transport
8.Supports up to 10 Gb/s Digital Optical Fiber Speed
9.Loop redundancy support
10.Option embedded optical bypass module for non-loop redundancy architecture
11.Long transport distance and accurate delay calibration
12.RF composite DL output power +27dBm
13.IP67 and wall mount or pole mount of ORU
14.19″ standard Rack case design of OMU
15.RJ-45 Port in OMU to support Local Control and Alarming via web browser GUI
16.Additional RJ-45 Port for external ethernet and wireless modem
17.SNMP V3 and MIB File
Technical Specification
Electrical Specification
Frequentiebereik (Aangepast):
146.400MHz
147.975MHz
159.700MHz
160.400MHz
160.550MHz
161.150MHz
162.100MHz
Downlink Composite Output Power: 27±2dBm
Gain:Max. 50dB
Gain Adjustment:25dB in 1 dB steps
Max Input Power without Damage: UL: ≤-10dBm
Group Delay: <36µs exclude fiber delay
IMD 3: -36dBc
Spurious:≤[E -mail beschermd]~1GHz ≤[E -mail beschermd]~12.75GHz
VSWR: <1.5
Alarm Detection:PA Fault alarm, Optical Transceiver Link alarm, Downlink output over power alarm, Door open alarm and etc.
I/O Impedance: 50 ohm
MTBF: 80,000 Hours
Voeding: 220V AC 50~60Hz
Stroomverbruik: Max. 200W
External and Connection
Local Alarm Indications:LED alarm display
RF Connector:1 * N-Type Female
Optical Connector:2* LC/UPC
Mechanical Specification
IP-classificatie:IP67
Temperatuurbereik:-25ºC to +55ºC
Relative Humidity:Max 95%
Dimensie:499*399*225mm
Gewicht:Max 34KG
Bedrijfsinformatie
Helios Technologies with its Headquarters based in Torch Hi-Tech Industrial Zone, Xiamen, China has 5,000 square meters production area and standard communications equipment manufacturing plant with the annual production capacity of up to 6,000 various types of wireless network equipment.
Our Manufacturing Department is composed with SMT group, RF Fine Tuning Group, Whole Assembly Group, CNC group and Technological Process Group and Quality Control Department for continuous improvement of production technology and quality. Our company now owned a new Japanese JUKI high precision multi-function SMT machine production line (model: JUKI KE2070L and JUKIKE-2080L) with a full range of high-precision Desen Printer, JT-800 Reflow Oven and ZHENGHUAXING AOI, which can undertake 0201, 0402, 0603, 0402, 0603 specifications of the chip components, BGA, QFP, PLCC shaped components SMT.
Focus on R&D, Manufacture and Sale for total innovation solution of Wireless Network, Smart Cities, Wireless Backhaul, Network Security, Big Data, AI & Edge Computing, covering span 88M to 5890MHz which support GSM, UMTS, TETRA, P25, DMR, AM & FM, VHF & UHF, LTE and 5G NR technologies.
Owning modern communications instrumentation equipment, high-quality workforce and excellent management team, our main products cover from 2G/3G/4G Baseband Chipset, 4G LTE-A Wireless L2 Relay, 2G/3G/4G Smart Multi-band Digital RF Repeater, Multi-band Frequency Shift Repeater, Multi-band Fiber DAS system, Ultra-broadband Wireless Image Transmission System to relative software and accessories.
SITE SURVEY
Many of our Regional Partners offer extensive & experienced engineering skills to provide comprehensive wireless network survey services for customers.
SOLUTION DESIGN
After analyzing survey data report, our Regional Partners will focus on understanding and communicating the precise requirements of customers to the Helios TEAM, who develops final solutions that are practical, technical and cost-effective after customers’ approval.
INSTALLATION AND COMMISSIONING
Our Team, along with our Regional Partners, provides field support services on Helios Equipment, installation and verification support on commissioning and proper operation of the systems. Our Engineers have extensive troubleshooting and commissioning expertise to solve any possible performance problem to make the systems work at optimized status, which can assist customers to finish engineering acceptance.
For more informations, please feel free to contact with us!!!