Condition: Used

This listing is for a module only — no mainframe is included. The Viavi JDSU 8126 MR is a medium-range, high-resolution singlemode OTDR module offering dual-wavelength operation at 1310/1550 nm with a dynamic range of 40/38 dB. It features a PC connector interface, an impressive event dead zone of just 0.8 m, and a range of up to 380 km, making it well suited for long-haul and metro fibre network testing.

Included in the sale:
• Viavi 8126 MR SM OTDR Module (PC connector)

Key specifications of this unit:
• Source: 1310/1550 nm
• Dynamic Range: 40/38 dB
• Connector: PC
• Event Dead Zone: 0.8 m
• Attenuation Dead Zone: 4 m
• Range: 380 km

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) 8126 MR is a medium-range, high-resolution singlemode OTDR module from the 8100 Series, designed for use with the MTS 6000 and compatible Viavi test platforms. It provides dual-wavelength testing at 1310 nm and 1550 nm and is engineered for installation, commissioning, and maintenance of long-haul and metro fibre optic networks. With a range of up to 380 km, the module is well suited to trunk fibre characterisation, splice loss measurement, and fault localisation on extended singlemode spans.

The PC connector interface and extremely short event dead zone of 0.8 m ensure accurate event detection very close to the launch point, while the 4 m attenuation dead zone supports precise splice and connector loss measurements. As part of the modular 8100 Series platform, the 8126 MR slots into Viavi MTS 6000 mainframes and benefits from the platform's intuitive software environment for reporting and analysis.

Key Specifications:
Wavelengths: 1310 nm / 1550 nm
Fibre Type: Singlemode
Dynamic Range: 40 dB (1310 nm) / 38 dB (1550 nm)
Connector: PC
Event Dead Zone: 0.8 m
Attenuation Dead Zone: 4 m
Maximum Range: 380 km
Platform Compatibility: Viavi MTS 6000 and compatible 8100 Series mainframes

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.