QPSK Modulator

Features:
1) QPSK modulator 
2) Compliant with ETS 300 421, (DVB-S)
3) Symbol rate up to 30MS/s
4) Bit rate up to 48Mbit/s
5) DVB-ASI or optional DVB-SPI Transport Stream input
6) Automatic Transport Stream adaptation 
7) IF output: (optional frequencies up to 2700 MHz)
8) User-friendly local control with front panel display and keypad
9) RS232 remote control interface 
10) Stand-alone unit, 1 rack unit high

Applications:
1) Digital microwave link IF modulator
2) Satellite uplink IF modulator (DVB-S)
3) CATV - MMDS

Specifications:
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 - SPI 
4) Output level: -5 ±2dBm 
5) Output impedance and connector 50ohm L16 socket 
6) Bit rate: Up to 48.382MB/s
7) Symbol rate: up to 30MS/s 
8) Baseband shaping (roll-off): 35%
9) Foward Error Correction (FEC) encoding
10) Code rate: 1/2, 2/3, 3/4, 5/6, 7/8 selectable
11) Outer code: Reed Solomon (204, 188, T=8)
12) Interleaving: Convolutional, I=12
13) Data scrambling: Per ETS 300 421

Physical and operating:
1) Power Supply 220V AC ± 10% 50/60Hz 
2) Operating temperature range: 0°C to 45°C
3) Housing rack drawer: 19", 1 rack unit

QAM 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 coding
2) Support full range variable data rate, bandwidth and QAM mode data
    stuffing 
3) PID filter, re-reflection, PSI,SI information synchronal updating possible
4) Automatically code stream stuffing and empty pocket deleting
5) Code stream real-time monitoring, empty pocket filtering
6) Supports NIT table modifying 
7) PCR adjusting, output symbol rate variable:1-7MS/s
8) Fixed or agile channel output
9) Providing DVB ASI/SPI code stream interface 
10) Providing RF output monitoring port(-20dB)
11) Local or Remote administration possible
12) LCD display, flexible in operating 
13) High reliability design, stable in running

Specifications: 
1) Modulating mode: 16, 32, 64, 128, 256 QAM
2) Symbol rate: 2 ~ 7Mbaud/s
3) Correction coding: RS coding 204
4) Input data rate: 1.5 ~ 51Mbps
5) Channel data rate: 20 ~ 56Mbps

IF output:
1) IF channel: 35.25 / 36.15 / 36.65 / 70MHz (optional)
2) Output level: 100dBmV
3) Impedance: 50Ω / 75Ω

Miscellaneous:
1) Dimensions: 19", 1 rack unit standard structure 
2) Temperature: 0 ~ 45°C (operating) -20 ~ 80°C (storage)