GQ-3655
Multi-functional IPQAM Modulator
GQ-3655 can receive multiple program sources from cable (or satellite, DTT network), IP network and local ASI, and then re-multiplexing, scrambling and modulating it with channel coding.
GQ-3655 adopts GOSPELL's flexible licensing mechanism for scrambling function and numbers of QAM channels. This flexibility can provide a lower capital expenditure (CAPEX) in initial phase and better asset protection in network expansion stage to DTV operators.
Due to its flexibility and versatility, GQ-3655 can be widely applied to DTV head-end system, in different areas, depending on operators requirements, such as cable DTV head-end, sub head-end, or broadcasting center.
Main Features
- Supports RF demodulation input, TS re-multiplexing, scrambling and QAM modulation
- Up to 8 DVB-ASI Inputs and(or)4 DVB-S/S2(DVB-C/DTMB) RF Inputs
- Supports TS-over-UDP/RTP input and outputs
- Up to four adjacent QAM channel outputs
- ITU-T J.83 Annex A/B/C compliant, 6MHz or 8MHz bandwidth
- Supported constellation: 16QAM, 32QAM, 64QAM, 128QAM and 256QAM
- Up to four DVB SimulCrypt CAS(s) and complies with DVB-CSA
- Multiple firmware options to enable built-in scrambler and modulation channels
- Supports UDP, RTP, ARP, ICMP and IGMP protocols
- 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 and SNMP management for remote management, monitoring and control
Specification
| RF Input (Hardware Options) |
| Satellite Input Option |
| Number of Inputs |
Up to 4 x L-band Input |
| (with L-band Loop Out each) |
| Standards |
DVB-S (EN300421) |
| DVB-S2(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 |
| Connector Type |
F-Type (Female, 75Ω) |
| Cable Input Option |
| Number of Inputs |
Up to 4 x RF Input |
| (with RF Loop Out each) |
| 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) |
| Terrestrial Input Option |
| Number of Inputs |
Up to 4 x RF Input |
| (with RF Loop Out each) |
| Connector Type |
F-Type (Female, 75Ω) |
| Standards |
DTMB (GB20600-2006) |
| Constellations |
4QAM, 4QAM-NR, 16/32/64 QAM |
| Carrier Mode |
SCPC and MCPC |
| FEC Mode |
0.4/0.6/0.8 |
| Frequency Range |
434 to 858MHz |
| Input Signal Level |
-84dBm |
| ASI Input (Hardware Options) |
| ASI Input |
Up to 8 x ASI Input |
| MPEG-TS Format |
188/204 Bytes self-adaption |
| Input Bit Rate |
270Mbps each |
| TS Mode |
Uniform and burst |
| Connector Type |
BNC (Female, 75Ω) |
| IP Input & Output |
| IP Interface |
1 x 100/1000 Base-T Ethernet(RJ-45) |
| MPEG TS Format |
7 x 188 Bytes |
| IP Encapsulation |
MPEG TS-over-UDP/RTP |
| MPEG TS Mode |
MPTS or SPTS |
| Operation Mode |
TS Inputs and multiplexing outputs |
| Number of TS |
Input: 128(max.) |
| Output: 4 |
| Addressing |
Unicast or Multicast |
| Protocol |
UDP, RTP, ARP, IGMP, ICMP |
| TS Re-multiplexing |
| Capacity of Processing |
Up to 4 TS multiplexing outputs |
| Up to 256 programs |
| PCR |
Auto correction |
| PSI |
PSI generation, manual insertion |
| PID |
Remapping, filtering, pass-through |
| PSI/SI Standards |
ISO/IEC 13818-1 |
| DVB SI(ESI EN300468) |
| TS Scrambling (License Options) |
| Number of Scrambler |
Up to 4 |
| Number of CAS |
Up to four DVB SimulCrypt CAS(s) |
| Scrambling Algorithm |
Comply with DVB-CSA |
| CAS Standard |
ETSI TS 103 197 |
| CAS Interface Protocol |
TCP/UDP (via NM Port) |
| EMM Bandwidth |
Up to 3 Mbps |
| Scrambling Rate |
Up to 60 Mbps per QAM channel |
| Scrambling Level |
Program-level |
| Real-time Statistics |
TS rate, program rate, PID rate |
| Modulation Output (License Options) |
| Output Connector |
1 x RF Output |
| 1 x -20dB RF Output (Test Port) |
| Connector Type |
F-Type (Female, 75W) |
| RF Frequency Range |
54 to 860 MHz |
| Bandwidth |
6 or 8MHz |
| Numbers of Output |
Up to 4 QAM channels(or carriers) |
| Modulation Standards |
ITU-T J.83 Annex A, B and C |
| Constellations |
16/32/64/128/256QAM |
| 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 |
90 to 110dBμV (RF output Port) |
| 70 to 90dBμV (-20dB test port) |
| MER |
≥38dB (64QAM, 6.875MBaud) |
| SNR(Out of band) |
≥50dB |
| Return Loss |
≥12dB |
Company Profile
Gospell was awarded "National Electronic Information Industry Model Enterprise" in 2013, and identified as "Famous Trademark" in 2014, also awarded "Hunan Province Governor Quality Award" in 2014, gained "Quality Credit Rating Certificate AAA" in 2015.
"High-frequency Microwave Copper-clad Plate Industry Model Enterprise" in 2015, "Beijing Science and Technology Award" in 2016, Gospell has a much higher brand influence in domestic and foreign markets.
FAQ
Q1: How to get a sample?
A: Sample order is acceptable. After price confirmation, you can require for samples to check our quality. If you need samples, we will charge for the sample and freight cost. The sample fee will be refunded if you place order.
Q2: What about the lead time?
A: In general, the lead time is about 25 to 35 days. But please confirm the exact delivery time with us as different products and different quantity will have different lead time.
Q3: How about the packing and shipping?
A3: Normally, we have carton for packing. If you have any other special requirements, please feel free to contact with us.
Q4: How about the OEM/ODM services?
A4 : We provide all kinds of OEM/ODM services ,
For example: Logo print on casing ,Customized packing, Software Customization. Please contact us to check the detail things before placing order.
Q5: How about the payment terms?
A5: We accept 30%T/T in advance, the 70% T/T balance before the delivery.
L/C, Money Gram and Western Union are also available.
Q6: How about warranty and procedure?
A6: Warranty time is 12 months. If you have any problem, please contact us in time, we will help you to resolve
the problem.
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