Transmodulator that generates two QAM Multiplexes from the services available in either one or two 8PSK TV SAT transponders of the same band and polarization.
Features
- Two independent tuners allowing more than 14 services per module
- Two output stages with packet generation above 6 MHz bandwidth
- Equipped with an input matrix to allow any input signal to be processed by any of the demodulators
- Output up to 1024 QAM
- Null packet insertion (“Stuffing”) allows the receiver (STB) to perform a faster scanning
Specifications
| Satellite input |
Input selection options (PORT1/PORT2) | IN/OUT, IN/IN, DISABLED/IN | Symbol rate | Mbaud | 10-30 | ||
| Input frequency (agile) | MHz | 950 - 2150 | FEC | QPSK Legacy | Viterbi 1/2, 2/3, 3/4, 5/6, 7/8 Reed Solomon (204, 188) |
||
| Frequency steps | MHz | 1 | 8PSK | Interactive Turbo Error Correction Reed Solomon (204, 188) |
|||
| Input modulation | QPSK Legacy (EN300421) Turbo 8PSK - Turbo QPSK |
Transmission filter | Square Root Raised Cosine | ||||
| Input level | dBm | -70 to -20 | Roll-off Factor | % | QPSK legacy | 35 | |
| PORT1-PORT2 isolation | dB | > 25 | 8PSK-TC QPSK-TC |
20 | |||
| Loop-through losses | dB | < 1.5 | In/Out connectors | type | “F” female | ||
| Input impedance | Ohm | 75 | |||||
| QAM Modulator |
Modulation format | QAM | 16, 32, 64, 128, 256, 512, 1024 | Symbol rate (max) | Mbaud | 6.9 | |
| Roll-off factor | % | 15 (12 for 1024 QAM) | |||||
| RF Output | Frequency range (agile) | MHz | 57 ··· 999 (EIA Ch 2 to 158) | Loop-through losses | dB | < 1.5 | |
| Frequency steps | MHz | 1 | MER | dB | > 40 | ||
| Output level | dBmV | 38 ± 2 | In/Out connectors | type | “F” female. | ||
| Adjustable level (min.) | dB | 20 | Out Impedance | Ohm | 75 | ||
| General | Powering voltage | Vdc | 24 | Consumption 24V | mA | 600 | |
| Protection index | IP | 20 | Working temperat | ºF | < 113 (use forced ventilation at higher temp) | ||
