E6000 CER Downstream Cable Access Module 2
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The DCAM-2 is an integral component of the second generation (known as “Gen 2”) set of line cards for the E6000 CER; the Gen 2 modules have been created to deliver additional service group density and greater throughput per service group. Both of these capabilities provide significant benefits for operators by enabling advanced service offerings while requiring less space and power in the head-end. Operators deploying the DCAM-2 can realize up to a 71% increase in total service groups per E6000 chassis; in addition, the DCAM-2 supports mass deployment of DOCSIS® 3.1 while maintaining all existing DOCSIS 3.0 channels and services. Use of the DCAM-2 requires the RSM-2 and can be implemented via field migration with simple changes to the E6000 chassis. The DCAM-2 can be used to provide the downstream MAC processing to enable Remote PHY (R-PHY operation) on the E6000 CER with a future software upgrade.
DCAM-2 provides a total of 16 physical ports per slot, delivering a 2x improvement in DS-SG as compared to the Gen 1 DCAM. For each of these 16 physical ports, DCAM-2 supports a downstream RF band up to 1.2 GHz. In addition, DCAM-2 is capable of supporting multiple 192 MHz OFDM channels per port. With these capabilities, DCAM-2 enables more service groups per chassis with more throughput in each service group. Operators receive significant benefits in terms of operational simplicity, cost savings, and competitive advantages by deploying DCAM-2. Use of DCAM-2 requires the RSM-2. DCAM-2 is not compatible with the Gen 1 RSM.
SUMMARY OF DCAM-2 FEATURES AND CAPABILITIES (PARTIAL LIST)
16 Physical Ports per Module (requires DPIC-2)
Full Spectrum Capable (108 MHz to 1218 MHz)
DCAM-2 Hardware Capable of Up to Four (4) Output Blocks per Port (Support in Software Determined by Release)
SC-QAM Output Block Supports Up to 32 SC-QAMs (Annex B) or 24 SC-QAMs (Annex A)
OFDM Output Block 192 MHz Wide
48 SC-QAMs (Max 32 DOCSIS/EuroDOCSIS™) plus 192 MHz OFDM per Port in Rel. 5.0
48 DOCSIS SC-QAM maximum per Port in Rel. 5.0 (Annex B, without IEQ or OFDM)
Additional SC-QAM and/or OFDM Density per Port in Later Releases (No Hardware Changes Required)
Downstream MAC Processing for Remote PHY Operation on the E6000 CER Acting as a CCAP Core (Future Software Upgrade)
| RF Downstream | |
|---|---|
| Frequency Range (MHz) | 108 to 1218 (edge to edge) |
| Modulation (QAM) | All required by DOCSIS 3.0 and DOCSIS 3.1 (Specific software support varies by release) |
| Max OFDM Channel Width (MHz) | 192 (Multiple channels supported per port) |
| Max SC-QAMs per Port | 128 (Sum total DOCSIS and IEQ) |
| SC-QAM Data Rate (Mbps) (Max.) | 30.34 to 55.62 per channel |
| SC-QAM RF Output Level (dBmV) | 25 to 60 |
| Physical | |
| Power | -48 VDC |
| Power Consumption (W) | 540 (typical at 25 °C) |
| Operating Temperature: Short Term °F (°C) | +23 to +131 (–5 to +55) |
| Operating Temperature: Long Term °F (°C) | +41 to +104 (+5 to +40) |
| Storage Temperature °F (°C) | -40 to +158 (-40 to +70) |
| Operating Humidity (Min.-Max.) | 5 to 85% (Non condensing) |
| Dimensions (H × W × D) in. (cm) | 13.8 × 1.2 × 17.8 (35.0 × 3.0 × 45.3) |
| Weight lbs. (kg) | Approx. 10.2 (4.6) |
| Installation Environment (System Level) | |
| Management Interfaces | 100/1000 Mbps Ethernet (RJ-45) plus Console (serial port, RJ45) |
| NSI Connector Access | RSM-2 ports via front of chassis, RPIC-2Q ports via rear |
| Management Access (System Level) | |
| In-band Management | Access Control Lists via any NSI port |
| Out-of-Band Management | Dedicated Ethernet port on RPIC-2Q |
| Console | Serial port on RPIC-2Q |
E6000 DCAM-2