GQ-3650DR
All In One QPSK/QAM To QAM Modulator
Product Overview
GQ-3650DR is a high density and all-in-one multi functional QAM modulator devolped by GOSPELL. It combines RF receiving & demodulation, TS re-multiplexing, scrambling and QAM modulation into 1RU, and provides two kinds of RF demodulation options; either QPSK/8PSK or QAM demodulation can be selected according to operators’ needs. Moreover, the GQ-3650DR supports up to eight channels of input transport streams from ASI interfaces. Therefore, with this product, operators obtain lower cost expenditure, lower energy consumption and minimized space of racks occupied. This all comes from the benefits of GQ-3650DR’s high density and all-in-one design.
GQ-3650DR adopts GOSPELL’s flexible licensing mechanism for scrambling function and numbers of QAM channels. Cable operators can easily enable up to four QAM channels and four DVB SimulCrypt CAs by importing the license file which is provided by GOSPELL. This flexibility brings operators lower capital expenditure (CAPEX) not only today but also tomorrow.
GQ-3650DR supports both Web browser and SNMP management for remote monitoring and control in real time. This can significantly reduce management time and operating expense (OPEX) for operators. Due to its flexibility and versatility, the GQ-3650DR can be widely applied to DTV central headend and remote headend system.
Main Features
- High density and all-in-one solution in 1RU, integrated functions including RF receiving & demodulating, TS re-multiplexing, scrambling and QAM modulation output
- Options of up to four channels of QAM or QPSK/8PSK demodulating inputs
- 3Mbps EMM bandwidth, up to 256 programs scrambled
- ITU-T J.83 Annex A/B/C compliant, 6MHz or 8MHz bandwidth
- Supports up to four DVB SimulCrypt CAS(s) and DVB-CSA scrambling
- Multiple firmware options to enable built-in scrambler and numbers of modulating channels
- Up to 64 programs for each modulating channel, 128 PIDs per program, PSI/SI processing
- Front panel control and LCD display
- Supports PID filtering, pass-through, PCR auto-correction
- Supports various customizable PSI/SI table extraction, resolving and modification
- Self-adaptive filter circuit design ensures outstanding out-of-band rejection
- Web browser and SNMP management for local and remote management, monitoring and control
Technical Specifications
| RF Input Options | |
| Satellite Input | |
| Number of Inputs |
1(or 2, 4) x RF Input 1(or 2, 4) x RF Loop Out |
| Connector Type | F-Type (Female, 75Ω) |
| Standards | DVB-S/S2 (EN300421/EN302307) |
| Constellations |
DVB-S: QPSK DVB-S2: QPSK/8PSK |
| Frequency Range | 950MHz to 2150MHz |
| Input Signal Level | -65 to -25dBm |
| LNB Power Output | 0V/+DC 13V/18V, Imax=400mA |
| Cable Input | |
| Number of Inputs |
1(or 2, 4) x RF Input 1(or 2, 4) x RF Loop Out |
| Connector Type | F-Type (Female, 75Ω) |
| Standards | DVB-C (EN300429) |
| Constellations | 16/32/64/128/256 QAM |
| Frequency Range | 50MHz to 860MHz |
| Input Signal Level | -20 to +20dBm (64QAM) |
| ASI Transport Stream Input | |
| ASI Input | 2(or 4, 8) x ASI Input |
| Data Format | 188 Bytes MPEG-TS packet length |
| Input Bit Rate | 1.5 to 214Mbps each, max. 400Mbps in total |
| Connector Type | BNC (Female, 75Ω) |
| Transport Stream Re-multiplexing | |
| Capacity of Processing | Up to 8 TS inputs and 4 TS outputs |
| PCR | Auto correction |
| PSI | PSI auto-generation, manual insertion |
| PID | Remapping and filtering and pass-through |
| PSI/SI Standards | ISO/IEC 13818-1, DVB SI(ESI EN300468) |
| Real-time Statistics | TS rate, program rate, PID rate |
| Transport Stream Scrambling | |
| Scrambling Algorithm | Comply with DVB-CSA |
| Numbers of CAS | Optional up to four DVB SimulCrypt CA(s) |
| CAS Interface Protocol | TCP/UDP (via Network Management Port) |
| EMM Bandwidth | Up to 3 Mbps per TS |
| Scrambling Rate | Up to 60 Mbps per QAM channel |
| Scrambling Level | Program-level |
| Modulation Output | |
| Output Connector |
1 x RF Output 1 x -20dB RF Output (Test Port) |
| Connector Type | F-Type (Female, 75W) |
| RF Frequency Range | 30 to 860 MHz |
| Bandwidth | 6 or 8MHz |
| Numbers of Output | Optional up to four QAM channels |
| Modulation Standards | ITU-T J.83 Annex A, B and C |
| Constellations |
Annex A: 16 /32 /64 /128 /256QAM Annex B: 64/256QAM Annex C: 32 /64 /128 /256QAM |
| Symbol Rate |
Annex A: 4.2 to 7 M baud Annex B: 5.057 M baud Annex C: 4.2 to 5.3 M baud |
| RF Output Power Level |
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