产品概述
The PL3000A optical segmentable node is designed for fiber-deep HFC networks. It has two high-level RF output ports. Each high level RF output port can be divided into two low-level output ports. All attenuation and equalization modifications will be made with ordinary JXP type pads.
PL3000A optical segmentable node’s reverse traffic can be mixed and routed using a DFB return transmitter module. Bi-directional TPs allow the operator to monitor and inject through a single TP connection. PL3000A optical segmentable node’s will be able to upgrade from a PL3100A amplifier to an optical node. This type of segmentable node will be field upgradeable from a forward-only to a forward-return path product.
PL3000A optical segmentable node’s is adaptable to unique network requirements due to the use of selectable optical connectors, strand mounting, and international frequency split.
技术规格
原理框图
Forward Optical Receiver Characteristics
| 参数 | 单位 | 值 | 备注 |
| Optical wavelength | nm | 1310 | 1200 to 1610nm |
| Optical connector | / | SC/APC
FC/APC |
Configured at Factory |
| Optical Responsivity | A/W | ≥0.85 | @1310nm |
| Optical return loss | dB | ≥40 | |
| Optical operating range | dBm | -8dBm ~ +2 | |
| Optical AGC range | dBm | -4dBm ~ +2 | |
| Optical AGC control stability | dB | ±1.5 | @-40℃~+60℃.Output level is maintained and Flatness is ±0.75dB for normal optical input power levels |
| Maximum Rx Input Power | dBm | +10 | Max level without damaging photo diode |
| EIN | pA/rtHz | ≤8 |
Forward RF Characteristics
| 参数 | 单位 | 值 | 备注 |
| 频率范围 | MHz | 54 ~ 1200 | 有多种拆分方式可供选择。 |
| RF output level | 分贝毫伏 | 50 | 2 端口版本 |
| 分贝毫伏 | 46.5 | 4 端口版本 | |
| 内倾角 | dB | 17±1 | @1200MHz |
| 平整度 | dB | ±0.75 | -40℃ ~ +60℃ |
| 输出收益损失 | dB | ≥16 | |
| 射频连接器 | / | 5/8” 或 PG11 | 可兑换 |
| 射频输出 TP | dB | -20±1 (w/jmpr) | 相对于射频输出端口，TP 为 F 型母头连接器。 |
| dB | -16.5±1（w/spltr） | ||
| 测试点平坦度 | dB | ±0.75 | 2 端口版本 |
| dB | ±1 | 4 端口版本 | |
| 测试点回报损失 | dB | ≥16 | |
| Isolation(FWD/REV) | dB | ≥46 | In band, Local Injection input downstream RF and test at REV Input TPs. |
| 失真测试条件：射频输出 | 分贝毫伏 | 50 | 双端口版本 |
| 分贝毫伏 | 46.5 | 4端口版本 | |
| 畸变测试条件：倾斜 | dB | 17±1 | @1200MHz |
| CTB | 分贝 | 67 | 59NTS, COIP -3dBm, OMI 3.25%, 110dBuV@550MHz, w/o fiber spool |
| CSO | 分贝 | 65 | |
| 交叉调制 | 分贝 | 62 | 59NTS+QAM, COIP -3dBm, OMI 3.25%, 110dBuV@550MHz, w/o fiber spool |
| 噪声系数 | dB | £ 9 | |
| 哼 | dB | 65 | @10A |
Return RF Characteristics
| 参数 | 单位 | 值 | 备注 |
| 频率范围 | MHz | 5 ~ 42 | 有多种拆分方式可供选择。 |
| 获得 | dB | 23 | 没有三态开关 |
| 平坦度反向 | dB | ±0.75 | |
| 内部反向倾斜 | dB | 0 | ±0.5dB |
| 噪声系数 | 10分贝 | ||
| 输入测试点 | dB | -20（带套头衫） | 相对于射频输入端口，±1dB裕量，,
TP是F型母头连接器 |
| dB | -23.5（带分线器） | ||
| TP 平坦度 | dB | ±1.0 | |
| 反向收益损失 | dB | ≥16 | |
| 哼 | dB | 65 | @10A，使用矩阵方法 |
| Operating input Level Range | 分贝毫伏 | 20 | Typica, 6 CHs bonding |
Return Optical Transmitter Characteristics
| 参数 | 单位 | 值 | 备注 |
| 光学输出功率 | dBm | 3 | DFB激光器 |
| 光波长 | nm | 1470~1610 | CWDM |
| RF Drive Level | 分贝毫伏 | 5~20 | |
| 光连接器 | / | SC/APC | FC/APC optional |
| NPR | dB | 25@30dB | 1550nm CWDM |
| Test Point | dB | -20 | 20dBmV@10%OMI |
一般特征
| 参数 | 单位 | 值 | 备注 |
| 工作温度 | ℃ | -40 ~ +60 | |
| 储存温度 | ℃ | -40 ~ +85 | |
| 输出端口 | / | 2或4 | 带分线器 |
| 涌 | 千伏 | ±6 | IEEE C62.41，1.2/50μS 组合波 |
| 前向均衡器 | / | 插件（带 JXP ATT） | |
| 返回均衡器 | / | 插件（带 JXP ATT） | 将基于不同的频率分割方式构建 |
| 热补偿 | / | 是的 | Built on board |
| 交流输入电压 | 真空 | 40 至 90 | 线路供电 |
| 效率 | % | 80岁以上 | |
| 功耗 | W | ≤35 | With Rx & Tx module |
| 权力传递 | A | 10 或 15 可兑换 | 15A 或 20A 电流持续 2 小时 @ 60°C 时，10A 或 15A 电流均不需要进行任何性能退化处理。. |
| 防水防尘 | / | IP68 | |
| 住房尺寸 | mm简体中文（大陆） | 333*208*136 | 斯特兰德户外住宅 |
| 包装纸箱 | mm简体中文（大陆） | 370*270*220 | |
| 重量 | 6.2Kg |
Welcome to enquiry our PL3000A optical segmentable node.
PL3000A: High-Output Optical Segmentable Node for Fiber-Deep HFC
The high-density, field-upgradeable segmentable node designed for bi-directional 1.2GHz broadband networks.
- Advanced Segmentation: Support for forward and return path segmentation, allowing operators to increase bandwidth capacity without laying new fiber.
- High RF Output Performance: 提供 110dBµV output level (2-port version) using premium GaAs technology for superior linearity.
- 1.2GHz Future-Proofing: Extended frequency range up to 1218MHz, making it fully compatible with DOCSIS 3.1 and future network upgrades.
- Field-Upgradeable Design: Easily converts from a standard amplifier to an optical segmentable node, supporting modular DFB return transmitters.
- Industrial Ruggedness: Encased in an IP68-rated strand-mount housing with ±6kV surge protection for reliable outdoor operation in extreme climates.
Technical FAQ: PL3000A Segmentable Node
Q1: What are the benefits of using a segmentable node in HFC networks?
A： A segmentable node like the PL3000A allows you to split a single optical node into multiple independent RF segments. This effectively reduces the “service group” size, increasing the available per-user bandwidth for high-speed data and VOD services without extensive re-cabling.
Q2: Does the PL3000A support bi-directional traffic monitoring?
A： Yes. It features bi-directional Test Points (TPs), enabling operators to monitor and inject signals through a single connection point. This drastically simplifies field maintenance and network balancing for return path traffic.
Q3: How is the output level managed across different temperatures?
A： The PL3000A is equipped with 热补偿 on-board and supports both MGC and AGC modes. This ensures the 110dBµV output level remains stable within ±1.5dB even during extreme outdoor temperature fluctuations from -40℃ to +60℃.
Q4: Can this node be upgraded from an existing amplifier?
A： Absolutely. Our modular architecture allows for a seamless field upgrade from a PL3100A amplifier to a full-featured optical node by adding receiver and transmitter modules, protecting your initial infrastructure investment.
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