Nd 235 Optical Receiver Nodes

Comtech Networking Optical Receiver

Usage/Application	Networking
Power	12 VDC
Packaging	Box
Brand	Comtech
Optical Wave Length	1200-1600 Nm
Bandwidth	47-860 MHz
Optical Sensitivity	+2 to -16 dBm
Battery Charging Time	2 Hrs
Battery Operating Time	36 Hrs (with optional dual battery)

Specifications

Optical Wave Length: 1200-1600 Nm
Output @ 0 dBm: 108 dB, @ -5 dBm: 98 dB
Bandwidth: 47-860 MHz
Optical Sensitivity: +2 to -16 dBm
All ports support Reverse POC (12V)
2600 mAh battery with fast charging (full charge in 2 hrs)
Backup: 18 hrs with one battery, 36 hrs with optional dual battery

Description

ND 235 Optical Receiver Node – High-Performance Solution for Fiber Optic Signal Reception

The Nd 235 Optical Receiver Nodes is a high-quality fiber optic receiver built to meet the demands of modern broadband and CATV (Cable Television) network infrastructures. This advanced device is engineered for outstanding optical-to-electrical signal conversion, ensuring high signal fidelity, wide dynamic range, and exceptional durability. Whether used in residential, commercial, or industrial applications, the ND 235 provides stable, high-quality performance with minimal maintenance.

With compact design, reliable operation, and user-friendly features, the ND 235 is a popular choice for service providers, telecom operators, and network integrators who require efficiency, reliability, and precision in signal distribution over fiber optic networks.

Key Features of ND 235 Optical Receiver Node

1. Wide Optical Input Range

The ND 235 supports an optical input power range from -9 dBm to +2 dBm, ensuring efficient operation in various network scenarios. This wide input range allows the device to adapt to different fiber transmission lengths and signal strengths without affecting the output quality.

2. High Sensitivity Photodiode

Equipped with a high-performance InGaAs photodiode, the receiver accurately converts weak optical signals into stable RF outputs, ensuring clarity and minimal distortion even in long-distance fiber transmission environments.

3. Automatic Gain Control (AGC)

The built-in AGC circuit maintains consistent output levels by automatically adjusting gain in response to changes in input signal strength. This feature eliminates the need for frequent manual tuning and helps ensure stable signal delivery to end-users.

4. Dual RF Output Ports

The ND 235 features two RF output ports, allowing it to distribute signals to multiple destinations simultaneously. This capability makes it ideal for multi-user environments such as apartment buildings, small communities, or commercial facilities.

5. Compact and Rugged Design

Its compact housing and rugged build allow for flexible installation in both indoor and outdoor settings. The durable, weather-resistant casing ensures reliable performance even in challenging environments.

6. LED Indicators for Easy Monitoring

The ND 235 is equipped with LED indicators that display power status, optical input signal presence, and operational status. These indicators help technicians quickly assess system conditions and perform troubleshooting if needed.

Applications of ND 235 Optical Receiver Node

1. CATV Networks

The ND 235 is perfect for use in CATV systems where high-quality, uninterrupted TV signal distribution is required. Its stable RF output ensures clear picture quality and uninterrupted transmission of digital and analog TV content.

2. FTTH (Fiber to the Home) Solutions

In FTTH applications, the ND 235 acts as a crucial terminal point where optical signals from the service provider are converted to RF signals for delivery to end-users. Its dual outputs allow it to serve multiple customers or rooms efficiently.

3. Digital Data and Broadband Networks

The node can also be used in broadband networks to deliver high-speed internet, voice, and video services. Its reliability and output stability make it suitable for triple-play (TV, Internet, Telephone) solutions.

4. Educational & Institutional Campuses

Institutions requiring centralized media distribution over fiber networks can rely on the ND 235 for consistent RF signal conversion and distribution throughout the premises.

Advantages of ND 235 Optical Receiver Node

✅ Wide optical input range for flexible deployment
✅ Stable RF output with built-in AGC
✅ Compact, weather-resistant design for versatile installation
✅ Dual RF output ports to cover multiple zones
✅ Easy maintenance with LED status monitoring
✅ Reliable performance in harsh environments
✅ Ideal for CATV, FTTH, and broadband applications

Technical Specifications

Parameter	Specification
Optical Input Range	-9 dBm to +2 dBm
Optical Connector	SC/APC
RF Output Ports	2
Frequency Range	45 MHz – 1000 MHz
AGC Function	Yes
Output Level	≥ 100 dBµV (adjustable)
Operating Temperature	-20°C to +60°C
Power Supply	AC 220V or DC 12V (optional)
Dimensions	Compact (Wall or pole-mount)

Conclusion

The ND 235 Optical Receiver Node is a compact yet powerful optical-to-RF converter that meets the growing needs of modern fiber optic networks. Its high sensitivity, AGC capabilities, and dual RF output ports provide outstanding performance in CATV, FTTH, and broadband distribution systems. Engineered for both ease of use and reliability, the ND 235 is the perfect solution for telecom operators and service providers looking to enhance signal quality, extend network coverage, and ensure consistent service delivery.

Whether you’re upgrading an existing network or building a new fiber infrastructure, the ND 235 Optical Receiver Node delivers the performance and dependability your project demands.