Source Selector

New! Now with Encrypted Data Support! Best Source Selector

NetAcquire Advanced Correlating Source SelectorTM

  • Seamlessly switch between data sources without missing a single bit
  • Automatically correct time-skew and align data sources
  • Experience a 500x improvement in data quality compared to individual sources

The NetAcquire Advanced Correlating Source Selector (A-CSS™) makes it easier than ever to gather high quality telemetry. In addition to selecting the best signal source from among multiple sources, the A-CSS uses a data fusion engine to time correlate and combine data to eliminate bit errors in real time. The A-CSS will switch from one source to another source without losing data, unlike other selectors, which can drop critical data when switching between sources.

The ability to correct for time skew between data sources is an important feature of the NetAcquire A-CSS. For example, if one channel provides data to the A-CSS ahead or behind the same data arriving from another channel, the A-CSS measures the time offset and automatically corrects for the time alignment mismatch. No data is lost or duplicated when the sources are combined and switched; the A-CSS delivers reliable data every time.

Independent benchmark tests of the NetAcquire A-CSS have established a factor of 500 times improvement in bit error rate over any individual input data source in a typical range environment. The A-CSS maximizes the information content extracted from each incoming data stream using advanced signal processing algorithms implemented in both FPGA hardware and in high-performance software. This processing includes configurable, data-specific optimizations. For example, if the data is unencrypted and has a frame sync pattern, the structure of the framed data is leveraged to further improve output data quality and to implement additional data integrity checking.

The NetAcquire A-CSS also supports correlating telemetry inputs that arrive via network connections. This first in the industry capability enables correlation of mixed data sets containing both PCM and Ethernet delivered data streams. This capability supports the incremental approach to IP-enabling a test range where the data sources are migrated to network IP transports over time. Output of correlated best data outputs in both PCM and network formats are standard features of the A-CSS.



  • Switching from one source to another while never missing a single frame
  • Time skew correction between data sources
  • Output data that is better than any individual input source
  • Very deep correlation buffers supporting up to 10,000 milliseconds of time skew
  • Detection of input channel bit errors anywhere in the frame
  • Optimizations for unencrypted and encrypted data
  • Option to use signal-to-noise information obtained from a Clear Sync Bit Synchronizer
  • Real-time operating system for minimal processing latency
  • Operating modes for many different environments
  • Support for optionally using advanced data quality information including receiver DQM (Data Quality
    Metric), CRC or checksum information, and other upstream metrics
  • Summary of real-time data quality with included mission report
  • Interactive display of all source signal data quality metrics, including (if applicable) DQM or signal-to-noise ratio
  • Flexibility to view data from any browser
  • Up to 32 input channels per output
  • Serial input, network input, or a mix of inputs
  • Serial output, network output, or a mix of outputs
  • Reconfigurable COTS-based solution


Configuration and monitoring of the NetAcquire A-CSS can be done remotely via a standard network connection to any authorized PC or workstation. No PC software is required, only a common Web browser. You can securely control your system from anywhere.

NetAcquire A-CSS provides the ability to select from different modes of operation, such as encrypted mode, frame lock monitoring, preference-based priority switching, and highest average frame lock over time.
When combined with the NetAcquire Clear Sync™ bit synchronizer, the NetAcquire A-CSS can extract actual signal-to-noise information from each source and use this data quality metric to further enhance the best source selection processing.

Each NetAcquire A-CSS system is built on the advanced NetAcquire SIO architecture. This means every system offers NetAcquire SIO telemetry functions. Ordering options can include decommutation, network communications, data recording, IRIG, data reformatting, publish/subscribe, simulation, and time synchronization.

Advanced Analysis and Reporting

During operation, the NetAcquire A-CSS tracks many data quality and performance parameters. These statistics can be viewed at any time as a mission report. The mission report summarizes input/output data and source selection characteristics; it also provides a powerful tool for optimizing external range assets for maximum data quality. Mission reporting supports automatic start and stop at the beginning and end of each mission. Click here to see an example mission report.

Encrypted Support

The NetAcquire A-CSS can automatically use RF receiver Data Quality Metric (DCM) or Clear Sync remote data bit synchronizers to obtain remote data quality information over either a traditional PCM connection or a network connection. In addition, the A-CSS supports an industry-unique mode of operation that permits source selection (including the challenging two-channel case) of encrypted data without requiring any changes to existing bit synchronizer hardware.

Specifications for Best Source Selector

PCM Data Rate0 to 10, 20, 30, 40 Mbps (ordering option)
PCM EncodingNRZ-L/M/S, Biphase-L/M/S, and IRIG 106 randomization
PCM Input Channels4 to 32 channels (ordering option)
PCM Output Channels4 to 32 channels (ordering option)
Network Input ChannelsNumber of channels unlimited
Network Output ChannelsNumber of channels unlimited
Bit SynchronizationSupported with NetAcquire Clear Sync
Operating ModesFrame sync lock, DQM, bit error rate, correlation lock, bit sync lock, SNR, Viterbi data quality, CRC, operator override, and custom modes
Majority VoteAutomatically engaged when sufficient sources are available, weighted voting for DQM
Best Source GroupsUp to 16 groups
Channels per Group1 to 32 channels per group
Data CorrelationUp to 10 seconds of delay supported between channels
Data SwitchingGap-free switching of correlated sources
Encryption SupportConfigurable to operate with either encrypted or unencrypted data

Is NetAcquire a good fit for your project?

Our applications engineers will discuss your needs and offer advice and pricing for the solutions we can provide.
NetAcquire provides quick responses to phone and email queries during Pacific Time business hours.

Call us toll free: 888-675-1122 or email [email protected]

For Employment, Business Affairs and other NetAcquire Contacts, CONTACT US

Preston Hauck

President, Chief Technology Officer

Preston Hauck founded NetAcquire in 1993 with the goal of providing computer communications and processing systems that seamlessly operate with real-time performance over distributed networks.

During the early years of NetAcquire, Preston took a hands-on role in developing new products. He remains enthusiastically involved in helping customers solve complex real-world challenges.

As the company grew, Preston leveraged his information systems background to create tools that could automate business processes, increasing company efficiency, responsiveness, and scalability. In his current role, Preston oversees new product direction, manages company growth,works directly with clients and the engineering team on projects that call for his applications design expertise.

Prior to founding NetAcquire, Preston served as vice president of software engineering for Microstar Laboratories, a provider of PC-based test and measurement products. During his tenure, he helped the company grow tenfold in both revenue and employees. Preston developed an innovative real-time operating system from the ground-up, plus a data processing engine that powered all of Microstar's products for more than two decades.

Preston holds a bachelor's degree in computer science, graduating first in his class in 1984 from the University of British Columbia.  He was granted a U.S. patent for developing a novel approach to initialize one processor from another in a multi-processor system. He has published a number of papers on real-time computer systems and regularly teaches networked telemetry processing classes.

Preston was born in Canada. After many years living in Washington State, he proudly became a naturalized U.S. citizen in 2003. He enjoys traveling, reading, photography, basketball, skiing, and movies with his wife Colleen and their two children.

John Bono

Engineering Vice President

John Bono, a Seattle area native, graduated summa cum laude with a Bachelor of Science in Electrical Engineering from the University of Washington.  John started his career with Boeing Aerospace Company, working in a variety of roles. He received personal recognition from Boeing’s CEO for his contributions to 767 avionics.  John designed hardware and firmware for a Mil-Std-1553 bus interface and was the hardware lead and system designer for a B-1B flight simulator’s computer generated imagery display.  After Boeing, John joined Advanced Technology Laboratories (ATL) as a signal processing engineer. He was promoted to the role of ultrasound system architect before becoming the software and systems lead for an image storage and network transport system. During John’s tenure at ATL, he received a Technical Fellow award, became a member of the Senior Technical Staff, and had a role in ATL’s achievement of ISO 9001 certification.  

When John joined the rapidly growing NetAcquire Corporation in 2001, his “big company” experience was leveraged to enhance configuration management and quality systems and processes. He soon became the Management Representative for the company’s AS 9100 certification efforts.  

Today, John is involved in the system, hardware, and firmware design of virtually every system NetAcquire ships.  While the majority of these systems are customer-specified configurations of NetAcquire COTS hardware and software modules, many other systems are rack-sized, challenging configurations involving complex interchanges of information in all forms.  The NetAcquire motto of “connect anything to anything” is John’s daily mission; he knows that, when applied to real-time systems, there will be a continuous stream of interesting problems to solve and challenges to conquer to best meet the needs of his customers and their mission critical projects around the world.

Steve Proudlock

Sales Vice President

For many NetAcquire customers, Steve is the initial face and voice of the company. While he has a desk at the company headquarters in Kirkland, Washington, quite often he’s in the air, flying to meet customers, discuss projects and set solutions into motion.

Steve joined NetAcquire in the summer of 2001. He sees his principal role as being the customer’s advocate. Steve thrives on opportunities to work on-site with NetAcquire customers to see first-hand the tasks and challenges they face.

In 2002, Steve joined the volunteer organizing committee for the International Telemetering Conference; he serves on the committee to this day. Steve also supports and participates in the meetings and industry standards efforts of several Range Commanders Council (RCC) committees.

Steve is an Army Veteran, having served in locations around the world in military law enforcement and personal protection roles. After graduating Pre Law from Central Washington University, he began a sales career in retail consumer electronics. The career choice was inspired by his favorite uncle, Ken Cartwright, a career tire salesman at Sears. Ken taught Steve the foundation principles of professional salesmanship: “Say what you are going to do, and then do it,” and “Get to know someone by showing sincere interest and earning their trust”.  

Steve’s Microsoft and Cisco certifications help him better understand the technical aspects of test range telemetry. While Steve is well versed in all aspects of NetAcquire technology today, he still learns something new on a daily basis from his colleagues.

Steve is a Seattle area native who enthusiastically gives his time and resources to a local charity dedicated to supporting foster children and their families.

Mark Roseberry


Mark Roseberry has been with NetAcquire since its inception. He holds a Bachelor's Degree in Computer Science and Mathematics, graduating with honors from the University of British Columbia. Mark has almost 40 years of software development and business management expertise. He has been instrumental in  the Company's business development and growth while running the NetAcquire Canada engineering office in Vancouver since 2001 and has been involved in the design and implementation of many key NetAcquire software components.

Mark shares our founder Preston Hauck's hands-on philosophy and his user-centric approach makes him a frequent participant and advocate for strong technical solutions ranging from customer-driven requirements development to robust implementation to  top-notch technical support and responsiveness.