HOW IT WORKS
Hunter Server Continuously captures and stores statistics on CPD, return spectrum, impulse noise, CNR alarms, laser clipping, and outages, 24/7.
Hunter Radar Arcom’s patented technology contains the correlation engine, which scans for CPD every second, while simultaneously using the integrated FFT spectrum analyzer to perform full return bandwidth spectrum analysis, noise under the QAM analysis, and calculate the weighted CNR for each return channel.
Xcor Client Our interface enables the user to pull and analyze data from the Hunter server. Also available as a web application.
Xcor Admin Configures administrative settings and provides means for troubleshooting, database audit train, and user access.
Return Path Switches Sequentially and rapidly present each node to the radar for test and analysis.
Xcor radar, the core technology powering the Hunter System, uses common path distortion (CPD) as a marker to locate impairments. Hunter uses existing forward digital channels as a radar-probing signal. When CPD exists, an echo-type signal is formed in the return path. Hunter runs a correlation process to statistically compare the forward and return signals in order to identify incidences of CPD. Using this information, the “time distance” to the impairment is calculated. Xcor can “see” extremely low level CPD ( -80dB) well below the system noise floor, and well below the capabilities of any other system. What’s more, in an all-digital environment, regardless of level, CPD will be indistinguishable from noise. Xcor is the only technology that can see and locate digital CPD.
As network devices begin to exhibit problems, they provide feedback in the form of intermodulation products that slowly begin to appear in the return path. Only Hunter can listen to this feedback and provide an opportunity to fix the device before it becomes network or subscriber-affecting.
The Hunter database stores valuable information about levels, consistency, and time distance to CPD sources. Hunter simultaneously takes snapshots of the return spectrum and automatically calculates bandwidth-adjusted carrier-to-noise ratio (CNR) of each return channel.
We use the CNR of the return path channels as a criterion to prioritize repairs. Often, impairments like ingress and impulse noise exist, but do not affect return signal quality. Hunter allows you to bypass these impairments and attack the truly network-affecting issues.
Built to help you
Reliable: Hunter alarms are always meaningful because they are based on the CNR requirement in the DOCSIS spec. Low CNR is where the DOCSIS spec says transmission will begin to deteriorate; critical CNR is where the DOCSIS spec says transmission will fail. By alarming only low and critical CNR conditions, Hunter eliminates false alarms.
Thorough: Hunter identifies the cause of impairment – CPD, impulse noise, or ingress – so your technicians arrive in the field better prepared.
Acute: Find problems earlier by simply lowering the CNR alarm threshold. Xcor can detect extremely low level CPD ( -80dB), well below the system noise floor and well below the threshold of any other equipment.
A Closer look
We engineered Hunter devices and applications to work together seamlessly to deliver everything you need to get the job done smarter, faster and easier.
Learn how to get the most from Hunter technology.