Product Description

QAM***0 is a prefessional, high quality digital headend transcoder. After the processing of RS encoding, scrambling, interleaving, QAM, wave filtering, finally upconvert frequency signal into RF signal and transmitout. With the advanced QAM modulation, it max supports up to ***4QAM, which greatly promote and optimise the RF output ***** service to make it widely applied in DVB-C headend network fields and hotel TV soultions. Key Features Modulation mode: *6, *2, *4, **8, **2 and ***4 QAM Input connectors: ASI, DS3(optional) Input TS packet mode: **8/**4 Variable symbol rate from 1 to 7 Mbaud/s High quality of MER and phase noise Support PSI/SI tables edition PID filtering, modifying, remapping PSI/SI generation Chinese/English LCD display and flexible in operation SNMP management Full frequency agile ******0MHz Outpur level: **0 - **0dBuV, in the step of ?0.5dB High reliability design, stable in running Ethernet and real time remote control and diagnostics. Applications DVB-C Headend Remote education and Bussiness TV R&D company laboratory and measurement Technical Specifications Data Interfaces ASI 2 ASI Input, ASI1 Input normal mode, but ASI2 s should to set PID via SNMP Accordance to EN******9 Connector: BNC, *5ohm Bit Rate: ≤**8 Mbps Packet Format: **8, **4 bytes DS3 Interfaces(Option) 1x DS3 , 1XDS3 loopback Full accordance to G.**3 standard Bit Rate: *4.**6Mbps DS3, *4.**8Mbps E2 Connector: BNC, *5ohm RF Interface RF Output 1x RF output Connecter: F-type(or BNC), *5ohm Output Frequency Range: ******0MHz Return Loss: ≥*5dB Phase Noise: ≤ -*/*@**********************0 dBuV, in the Step of 0.5dB Symbol Rate:**7 Mbaud RF Test-point Connecter: F-type(or BNC), *5ohm RF Level: *0~**0 dBuV, in the step of 0.5dB Channel Encoding QAM Contellations: All constellations up to ***4 QAM MER: ≥*8dB BER: ≤ 0.5 x *0 *9 (*4QAM) SNR: ≥*0dB