Condition: Used — Good condition.

This Viavi JDSU OneExpert ONX-580 (ONX-BDCM-GFAST variant) is a fully optioned field test set for DSL and broadband copper access network testing. The unit carries an extensive set of active software licences making it one of the most capable configurations available for this platform.

Licensed options confirmed active on this unit:
• Bluetooth
• DSL
• Bonded G.fast
• Broadcom
• IP Video
• Mobile
• Ookla Speedtest
• Resistive Fault Locator
• SmartAccess Anywhere
• Transmission Impairments
• TrueSpeed
• V35B Profile
• VoIP
• VoIP MOS

The images provided are of the actual item you will receive. Please review them carefully for the cosmetic condition and what is included in the sale.

The Viavi (formerly JDSU) OneExpert ONX-580 is a field-portable DSL and broadband test solution designed for telecommunications engineers working on the installation, maintenance, and troubleshooting of copper access networks. It combines a wide range of DSL physical layer tests with service-layer verification tools, enabling engineers to qualify lines, locate faults, and validate end-user broadband experience in a single handheld instrument.

The ONX-580 supports testing across all major DSL technologies including ADSL, ADSL2+, VDSL2, and G.fast, and is highly configurable through software licence options, allowing operators to tailor the instrument to their specific network requirements. Its TDR capability enables precise cable fault location, while tools such as TrueSpeed and Ookla Speedtest allow accurate measurement of attainable and actual broadband throughput.

Key capabilities include:
- DSL physical layer qualification (SNR, attenuation, line length, noise)
- G.fast and Bonded DSL testing
- TDR-based resistive fault location
- IP Video quality testing and analysis
- VoIP and VoIP MOS measurement
- Ookla Speedtest integration
- SmartAccess Anywhere remote management
- Transmission Impairments testing
- Bluetooth connectivity
- Mobile network testing

Typical Specifications:
Display: Colour touchscreen
DSL Standards Supported: ADSL, ADSL2, ADSL2+, VDSL2, G.fast
Fault Location: TDR with Resistive Fault Locator option
Connectivity: Bluetooth, Ethernet
Form Factor: Handheld, field-portable
Power: Battery and mains AC adapter

The ONX-580 is widely used by telecoms operators, field engineers, and network contractors requiring a comprehensive, portable broadband test platform for copper access networks.

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is 'not as specified', you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.