1. Introduction about our Modular PDH multiplexer Developed by our R&D team, this is a modular PDH multiplexer with optic link interface featuring complete maintenance functions,which combines 2M (4~16 E1 channels) and 10/100Base_T(2 channels) data transmission into one optic link. It features high-density integration, small size, low power consumption, reliability, easy installation and use. 2. Main Characteristics a) Based on the state-art-of VLSI technology, high density integration,single PCB design, stable and reliable performance, low power consumption; b) The transmission distance is more than 25 kilometers without relay;Provide 10/100Base_T interface with bit rate of 100M. c) When the device loses optical connection or runs out of sync,AIS alarms will be sent to all channels. The alarms can be sent to the local or remote side at options,the alarming sound can be shielded,so does the alarms of losing E1 channels.Instead,error indications will be provided.When the device loses optical connection or runs out of sync,no other output comes from 2MB/S asynchronous data sampling channels except output of AIS. d) E1 interface complies with ITU-T G.703 recommendation, and all-digital timing and smooth PLL technology is adopted. e) LED indicates the alarms of local and remote side. f) Optional power supply: 220V AC, -48V DC 3. Working Conditions Ambient Temperature: 0 ℃ ～ + 85℃ Relative Humidity: ≤95%(+ 35 ℃) Atmospheric Pressure: 86 ～ 106 Kpa 4. Power Supply Rated Working Voltage (optional for built-in type) : AC 220V or DC -48V Valid Dynamic Input Voltage Range: AC 220V ±10％ or -25%～+50% Power Consumption: ＜15W 5. Optical Interface Optical Output Power: ≥-15dBm Receive Sensitivity: ≤-35dBm Optic Wavelength: 1310nm Optic Connector: FC Line Type: NRZ + Scrambling code Bit Rate: 150Mbit/s 6. 2Mbit/s Interface Signal Rate: 2048Kbit/s Tolerance : ±50ppm In/Out Interface Code : HDB3 In/out Interface Impedance: 75 Ohm(unbalanced)or 120 Ohm(balanced) Electrical Specification of Data Interface: Conforms to the ITU—T G.703 recommendation Jitter Transfer Characteristic: Conforms to the ITU—T G.823 recommendation Input Jitter Mask: Conforms to the ITU—T G.823 recommendation 2Mbit/s Adapter: CC4 coaxial connector or DB37 connector 7. Technical Parameters ☆Optic Interface Bit Rate: 155.52Mbps ±20ppm Line Type: NRZ+ scrambling code Transmitting Optical Power: >-5dB(long distance),or >-12dB(short distance) Receiving Sensitivity: >-36dB Standard Interface Types: FC/single mode /dual-fiber/transmission distance 40Km Alternative types: single fiber,60,80Km…… ☆ E1/2MInterface Bit Rate: 2.048Mbps ±50ppm Standards:ITU-T G.703, G.704, G.712 E1 Line Code: HDB3 Jitter Transfer Characteristic: ITU-T G.823 Interface Impedence: 75Ω,120Ω(alternative) Physical connectors: CC4, DB37 ☆ Ethernet Interface Compatibe with IEEE 802.3 Interface Type: 10/100Base_T self-adaptive Bit Rate: 100Mbps Transmission Rate: 100Mb/s Physical Interface: RJ45 ☆ Others 19 inch 1U EIA chassis The working status of LED indicating system Input Voltage: -48V DC or 220V AC Acceptable dynamic DC Voltage: -25% ～ +50% Acceptable dynamic AV voltage: 10% Full Capacity Static Power: ≦15W 8. Scope of Applications This integrated multi-service transmission device is suitable for signal transmission between switches, mobile switching centers, public and special network accesses.
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