OneExpert DSP (ONX-220)

Installation/service meter with OneExpert DNA, with unequaled in speed, simplicity and value.

Fast, simple, versatile, and affordable, the OneExpert DSP (ONX-220) is a powerful installation/service meter.

When home network quality is unreliable, customers become dissatisfied and are more likely to churn. At the same time technical complexity is increasing, but technician skill and experience at the installation service tier is typically minimal. 

It’s never been more important to have quick, effective troubleshooting tools that enable techs to quickly and efficiently verify performance as advertised.

The OneExpert is fast, complete, and follows up testing with simple cloud data storage to enable real-time close-out and reporting.


  • Fastest and most comprehensive tool for verifying high speed DOCSIS service activation and performance
  • Rugged build quality, workmanship, and reliability expected from VIAVI and our years of measurement experience
  • Technicians now have access to a rugged, precise measurement instrument at a budget minded price
  • Best balance of features, performance, and cost – designed to meet the budgets of installers and contractors


  • Complete connectivity with the VIAVI MobileTech App via the technician’s mobile device
  • Real-time data connection updates supervisors and back office systems
  • Provides complete information tracking that couples work orders to jobs and enables geotagging for validation of customer visits

Flexible and Affordable 

  • Minimize expense by matching test capabilities to current needs, then changing as needed as part of software/service/support plans
  • Expand meter functionality as the technician advances, adding new capabilities as needed
  • Built-in support for fiber optic inspection and power measurements, along with home network integrity testing


  • Troubleshoot service issues between the TAP, Ground Block and CPE
  • Identify and fix intermittent issues related to QAM and OFDM carriers and the home network
  • Verify WiFi signal strength, availability and performance of 2.4GHz and 5GHz networks


  • Simple icon-based UI with capacitive touch screen control is easy for new technicians to learn 
  • Powerful measurement dashboards with simple Pass/Fail results for novice technicians while advanced techs can drill down for more detailed measurement results 
  • Technicians can quickly identify and resolve issues without needing years of field experience 
  • Powerful processing for faster measurements and complete autotest results in less than two minutes 
  • Works right out-of-the-box with each unit being factory synced to the customer’s StrataSync account, so any configurations and limits are automatically configured upon arrival 

Key Features

AutoChannel™ instantaneous channel lineup detection eliminates need for lineup editing, updating and deploying

OneCheck comprehensive mistakeproof automated tests, including: ingress, downstream channels and DOCSIS carriers at three demarcation points (Tap, GB, CPE)

DOCSISCheck real-time analysis and powerful DOCSIS carrier and data service troubleshooting; upstream and/or downstream

ChannelCheck real-time analysis and powerful downstream QAM, OFDM, and Analog carriers troubleshooting

DQI (Digital Quality Index) focuses on raw information condition on the physical path, immediately detects intermittent and sustained issues within the stream

Integrated Bluetooth connectivity enables leveraging mobile device GPS and multimedia capabilities with VIAVI Android/iOS Mobile Tech App

Ready for high-speed Gigabit Ethernet and DOCSIS and WiFi* service testing, unavailable with other low-cost competing products

Compatible with P5000i optical inspection scope, MP-60/80 optical power meter

OneCheck dashboard simplifies identifying RF issues 

Fast and easy connectivity, optional fiber scope and power meter 

TELONIX stands behind every product sold, with unmatched technical support.