C10G Downstream DS8x8 / DQM64 Module
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The C10G supports complete separation of downstream (DS) channel capacity and upstream (US) channel capacity in a single physical chassis, providing a flexible downstream to upstream channel ratio. Cable operators can add downstream channels and upstream channels completely independently within the same chassis.
The DOCSIS QAM Module (DQM) is a complete DOCSIS downstream unit that includes DOCSIS packet processing, QoS, DOCSIS downstream MAC, PHY and RF up-conversion.
| DOCSIS QAM Module (DQM) | |
|---|---|
| DQM32 | 32 channels, 4 channels/port |
| DQM64 | 64 channels, 8 channels/port |
| QAM modulation | Annex A, B or C |
| QAM constellations | 64, 128 & 256 QAM |
| Data rates (DOCSIS) |
27 Mbps @ 64 QAM 38 Mbps @ 256 QAM |
| Data rates (EuroDOCSIS) |
36 Mbps @ 64 QAM 51 Mbps @ 256 QAM |
| Frequency range (center) | 48 to 1000 MHz |
| Frequency step size | 5 kHz |
| Channel width | 6 to 8 MHz (tunable) |
| Maximum output power per channel |
60 dBmV @ 1-ch/port 56 dBmV @ 2-ch/port 52 dBmV @ 4-ch/port 49 dBmV @ 8-ch/port |
| Output step size | 0.1 dB |
| Output accuracy | ยฑ 5 ppm |
| Return loss |
50 ~ 870 MHz, 14 dB 870 ~ 1002 MHz, 10 dB |
| Modulation error rate | 43 dB (equalized) |
| Wideband noise | -73 dBc |
| RF I/O Downstream Module (RFD) | |
| Number of ports per module | 8 ports per module |
| Connector | Fโtype, 75 $\Omega$ |
C100G, C100G-DS8x8, C10G, C10G-DQM64, C40G, C40G-DS8x8, CMTS, CSYPCA-0046-02-LF, Downstream

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