DS2000 optical distribution station is a high performance, four individual outputs node. With high output levels
and performance to 862MHz, it provides an ideal platform for support of the evolving technologies and services in advanced HFC networks. Designed with full flexibility, DS2000 offers a variety of configurations which are ideal for analog and digital transmission, telephony and data services. Utilizing extensive modular design, DS2000 can meet any advanced network requirements.
DS2000 offers a complete scalable solution for opto-electronic deployment in any broadband system. Configured in sturdy, weatherproof rugged die-casting housing, suitable for strand or pedestal mounting, DS2000 operates over a wide temperature range and accepts cable powering 40~90V high-efficiency switch mode power supply.
Internal RF connections are made with 75Ohm type connectors. RF test connections are standard type F.

Use of the latest technology gives DS2000 high signal quality with increased system reliability and reduced
maintenance. The unit has four identical bidirectional coaxial ports. The interstage equalizer and 4 other
equalizers for each port provide a solution to different network structure. DS2000 offers a wide variety of pass
band options. Diplex filters are available at 35/47, 42/54 and 65/87MHz, allowing operation in virtually any cable
system worldwide. All of the bi-directional ports are capable of passing power into or out of the unit. Separate
attenuator and equalizer configure each of the ports. Careful design of the receiver circuit allows for a variety of
channel loading of 80~110 NTSC analog channels, 59 or more PAL analog channels, or a combination of analog and digital signals.
The forward system receiver modules are compatible with either 1310nm or 1550nm signals. Each receiver
utilizes a receiving module to assure optimum carrier-to-noise performance. There are also LEDs indicates the level of optical input and alarms status.

DS2000-RS model has segmented return path which meets the growing demand for the use of return path by internet, telephony or Video on demand (VOD). It can be equipped maximum to 4 return path transmitters, one for each port.

The high output level offers the ability to optimize the coaxial plant distribution from a single node and contributes to reduced amplifier cascades, making medium to high density systems more cost effective. The performance and output levels of the node allow it to be easily integrated into any of the current system architectures.

 

Features

• Standardized modular design, easy for maintenance and upgrade
• Four individual high outputs up to 52dBmV
• GaAs technology guaranteeing the high performance
• SMT production guarantee the quality    
• Forward equalizer per each output configuration fits in various network designs
• Forward redundancy capability increases the stability of the network
• LEDs indication in optical receiving unit simplifies the operation
• Application of ESD and TVS technology on circuit increases the reliability
• Max. configured up to 4 segmented return path transmitters

 

Diagrams of DS2000-RS

 

 

 

Specifications

Forward Path, Optical	Forward Path, RF
Optical Input Range -5dBm to +2dBm, -1dBm nominal Optical Wavelength 1290nm to 1600nm Receiver Power Monitor Voltage 1V/mW Fiber Connector SC/APC, FC/APC Flatness ±0.75dB Test Points -20±1.0dB	Bandwidth 54~862MHz Flatness ±0.75dB Return Loss <-16dB Output Level (@ -1dBm) 52.0dBmV/862MHz Distortions CTB = -74dB, CSO = -74dB Gain Adjustment Plug in attenuator 0-10dB, 2dB per step and plug in attenuator 0-18dB, 2dB per step Slop Adjustment 8dB Interstage Equalizer and plug in attenuator 0-12dB, 2dB per step Output Return Loss < -16dB RF impedance 75 Ohms Test Points -20±1.0dB
Return Path	Return Path, RF
Optical Return Path Transmitter DFB Isolated FP RF input Power* 20-24dBmV 20-24dBmV Optical Wavelength 1310nm ±10nm 1310nm ±10nm Output Power 2mW > 1mW Return Loss < -16dB < -16dB Flatness ±1dB ±1dB Distortions C/N > 51 CSO< -75 CTB< -70 C/N > 51 CSO< -75 CTB< -70 Fiber Connector SC/APC, FC/APC   Working Temperature -20ºC to +85ºC	Pass Band 5~42MHz Flatness ±1dB Test Points -20±1.0dB Gain Adjustment Plug in attenuator 0-10dB, 2dB per step
Link Performance (@-1dB optical input, 48dBmV output, 12dB slope)
General C/N >52dB AC Power 40-90V/50-60Hz CTB >65dBc RF Connector F CSO >60dBc Dimensions (L x W x H) 381 mm x 231 mm x 201 mm Frequency Response ±1.5dB Weight 9 KGS (Transmitter OMI 3.6%, carrier Loading 59 PAL analog Channels to 550MHz) Operating Temperature -40ºC to +60ºC Relative Humidity 5~95% *RF input power is usually within this range and max. 30dBmV. It varies according to the network design. **Factory setup 12dB slope is achieved by 8dB interstage equalizer and 4dB equalizer per port.