Condition: Used — Tested and fully functional. Cosmetic imperfections are present but do not affect performance.

The Viavi EBIDR-LBK-DEMOBOX is a bidirectional loopback OTDR demo box featuring two parallel fibre scenarios, ideal for training, demonstration, and validation of OTDR measurement techniques. This unit is supplied as the APC connector variant and is housed in a robust Explorer hard case for safe transport and storage.

Included in the sale:
• VIAVI EBIDR-LBK-DEMOBOX Test Bed (Option APC) in Explorer hard case

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 EBIDR-LBK-DEMOBOX is a bidirectional loopback OTDR demonstration box manufactured by Viavi Solutions, a globally recognised leader in network test, measurement, and assurance. Designed to support fibre optic training environments and product demonstrations, the unit replicates real-world fibre network scenarios without the need for a live fibre plant.

The demo box presents two parallel fibre scenarios, allowing users to practise bidirectional OTDR measurements, analyse event detection, and understand splice and connector loss characterisation in a controlled, repeatable setting. The APC (Angled Physical Contact) option ensures minimal back-reflection, making it suitable for use with single-mode OTDR platforms.

Key characteristics:
Connector Type: APC (Angled Physical Contact)
Fibre Type: Single-mode
Scenarios: Two parallel independent fibre paths
Measurement Mode: Bidirectional loopback OTDR
Portability: Supplied in Explorer hard carry case
Application: OTDR training, demonstration, and field simulation
Manufacturer: Viavi Solutions

Please refer to the Viavi Solutions website for full product specifications and compatibility information.

Please refer to the manufacturers website for more information.

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, and the email should include the order number, date and reason for return 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 which case we will arrange a prepaid return label.