Адрес: No.16 West Yulin Street, Wuhou, Chengdu, Sichuan, China (Mainland) Zip: 610041
Телефон: +0086-28-85583471
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Features:1) QPSK modulator2) Compliant with ETS 300 421, (DVB-S)3) Symbol rate up to 30MS/s4) Bit rate up to 48Mbit/s5) DVB-ASI or optional DVB-SPI Transport Stream input6) Automatic Transport Stream adaptation7) IF output: (optional frequencies up to 2700 MHz)8) User-friendly local control with front panel display and keypad9) RS232 remote control interface10) Stand-alone unit, 1 rack unit highApplications:1) Digital microwave link IF modulator2) Satellite uplink IF modulator (DVB-S)3) CATV - MMDSSpecifications:1) Modulation scheme: QPSK (ETS 300 421 DVB-S)2) IF output frequency 70 Hz (optional: frequencies up to 2700MHz)3) Input digital interface DVB - ASI (BNC socket) option: DVB - SPI4) Output level: -5 ±2dBm5) Output impedance and connector 50ohm L16 socket6) Bit rate: Up to 48.382MB/s7) Symbol rate: up to 30MS/s8) Baseband shaping (roll-off): 35%9) Foward Error Correction (FEC) encoding10) Code rate: 1/2, 2/3, 3/4, 5/6, 7/8 selectable11) Outer code: Reed Solomon (204, 188, T=8)12) Interleaving: Convolutional, I=1213) Data scrambling: Per ETS 300 421Physical and operating:1) Power Supply 220V AC ± 10% 50/60Hz2) Operating temperature range: 0°C to 45°C3) Housing rack drawer: 19", 1 rack unitQAM Modulator (TLQM-3):QAM Modulator CATV digital head-end, receives DVB transport streams which come from a coder, multiplexer, DVB gateway, scrambler, video server etc. It performs signal processing such as RS coding, convolution interleaving and QAM modulating, and provides IF/RF output.Features:1) Complying DVB standard signal channel coding2) Support full range variable data rate, bandwidth and QAM mode datastuffing3) PID filter, re-reflection, PSI,SI information synchronal updating possible4) Automatically code stream stuffing and empty pocket deleting5) Code stream real-time monitoring, empty pocket filtering6) Supports NIT table modifying7) PCR adjusting, output symbol rate variable:1-7MS/s8) Fixed or agile channel output9) Providing DVB ASI/SPI code stream interface10) Providing RF output monitoring port(-20dB)11) Local or Remote administration possible12) LCD display, flexible in operating13) High reliability design, stable in runningSpecifications:1) Modulating mode: 16, 32, 64, 128, 256 QAM2) Symbol rate: 2 ~ 7Mbaud/s3) Correction coding: RS coding 2044) Input data rate: 1.5 ~ 51Mbps5) Channel data rate: 20 ~ 56MbpsIF output:1) IF channel: 35.25 / 36.15 / 36.65 / 70MHz (optional)2) Output level: 100dBmV3) Impedance: 50Ω / 75ΩMiscellaneous:1) Dimensions: 19", 1 rack unit standard structure2) Temperature: 0 ~ 45°C (operating) -20 ~ 80°C (storage)
Features:1) QPSK modulator2) Compliant with ETS 300 421, (DVB-S)3) Symbol rate up to 30MS/s4) Bit rate up to 48Mbit/s5) DVB-ASI or optional DVB-SPI Transport Stream input6) Automatic Transport Stream
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