For more than 30 years, GDP has been a trusted leader in Best Source Selector (BSS) technology, helping telemetry teams ensure error-free data, uninterrupted signal flow, and mission assurance. With the largest installed base of Correlating BSS systems in the world, GDP continues to deliver field-proven performance across launch facilities, test ranges, and airborne telemetry environments.
What Is a Correlating Best Source Selector?
A Correlating BSS intelligently selects the best bits from multiple input streams by aligning them in real time and performing bit-by-bit weighted majority voting. This process ensures the highest signal quality while eliminating frame sync drops, even when switching between input sources.
The result? Consistent, high-integrity data delivery, even under challenging conditions like encrypted data, stream timing discrepancies, or signal fades. Unlike traditional non-correlating switchers, GDP’s Correlating BSS maintains frame lock during switching, making it ideal for modern, high-reliability telemetry systems.
Introducing the Model 2267C
At the center of GDP’s BSS product line is the Model 2267C Best Source Selector, a flexible and advanced correlating/diversity combining best source selector designed to deliver performance without compromise.
Key Features:
- Supports up to 16 input channels with 6 output groups
- Seamless bit-by-bit switching using majority or weighted majority voting
- Real-time stream correlation, even with encrypted or asynchronous inputs
- Significant reduction in dropped frame and sync loss and over 5dB performance gain
- Data rates up to 40 Mbps (All channels simultaneously)
- Supports Data & Clock and Ethernet (DQE/DQM) interfaces
- Compatible with IRIG 218-10, 218-20, and GDP proprietary transport formats
- Integrated into GDP’s TRMS-RMS software suite for mission routing and post-mission data analysis
Whether you need to preserve frame lock in a dynamic signal environment or combine inputs from multiple receivers or antennas, the Model 2267C Best Source Selector delivers industry-leading flexibility and performance.
BSS and Diversity Combiners: Complementary Tools
GDP frequently supports customers evaluating how Correlating BSS and Diversity Combiners can work together to enhance overall system performance. While both tools help improve link availability, they serve distinct purposes within a telemetry architecture.
A Correlating BSS is especially advantageous when:
- Handling encrypted or asynchronous data streams
- Performing bit-level correction
- Ensuring continuous frame synchronization during source switching
GDP provides a library of white papers to help guide system design decisions:
- Best Source Selector vs. Diversity Combiner
- BSS vs. Combiner BER Comparison
- History and Advantages of Best Source Selection
Trusted Worldwide. Proven Everywhere.
GDP’s Correlating BSS systems are deployed in critical missions around the globe, where signal integrity and data reliability cannot be compromised. With a decades-long legacy of innovation and support, GDP continues to evolve its Best Source Selector technology to meet the demands of today’s high-speed, high-risk telemetry environments.
Looking to improve your telemetry system’s performance and resilience? Let us show you how the Model 2267C Best Source Selector can strengthen your signal chain, no matter the complexity.
Ready to see it in action? Contact us to schedule a live demonstration or request more technical information about the Model 2267C Best Source Selector.